[CVCUDA] PP-OCR detector preprocessor integrate CV-CUDA (#1382)

* move manager initialized_ flag to ppcls

* update dbdetector preprocess api

* declare processor op

* ppocr detector preprocessor support cvcuda

* move cvcuda op to class member

* ppcls use manager register api

* refactor det preprocessor init api

* add set preprocessor api

* add create processor macro

* new processor call api

* ppcls preprocessor init resize on cpu

* ppocr detector preprocessor set normalize api

* revert ppcls pybind

* remove dbdetector set preprocessor

* refine dbdetector preprocessor includes

* remove mean std in py constructor

* add comments

* update comment

* Update __init__.py

fastdeploy/vision/classification/ppcls/preprocessor.cc

@@ -14,7 +14,6 @@
 
 #include "fastdeploy/vision/classification/ppcls/preprocessor.h"
 
-#include "fastdeploy/function/concat.h"
 #include "yaml-cpp/yaml.h"
 
 namespace fastdeploy {
@@ -102,13 +101,17 @@ void PaddleClasPreprocessor::DisablePermute() {
 
 bool PaddleClasPreprocessor::Apply(FDMatBatch* image_batch,
                                    std::vector<FDTensor>* outputs) {
+  if (!initialized_) {
+    FDERROR << "The preprocessor is not initialized." << std::endl;
+    return false;
+  }
   for (size_t j = 0; j < processors_.size(); ++j) {
-    ProcLib lib = ProcLib::DEFAULT;
+    image_batch->proc_lib = proc_lib_;
     if (initial_resize_on_cpu_ && j == 0 &&
         processors_[j]->Name().find("Resize") == 0) {
-      lib = ProcLib::OPENCV;
+      image_batch->proc_lib = ProcLib::OPENCV;
     }
-    if (!(*(processors_[j].get()))(image_batch, lib)) {
+    if (!(*(processors_[j].get()))(image_batch)) {
       FDERROR << "Failed to processs image in " << processors_[j]->Name() << "."
               << std::endl;
       return false;

fastdeploy/vision/classification/ppcls/preprocessor.h

@@ -55,6 +55,7 @@ class FASTDEPLOY_DECL PaddleClasPreprocessor : public ProcessorManager {
 
  private:
   bool BuildPreprocessPipelineFromConfig();
+  bool initialized_ = false;
   std::vector<std::shared_ptr<Processor>> processors_;
   // for recording the switch of hwc2chw
   bool disable_permute_ = false;

fastdeploy/vision/common/processors/base.cc

@@ -20,9 +20,9 @@
 namespace fastdeploy {
 namespace vision {
 
-bool Processor::operator()(FDMat* mat, ProcLib lib) {
+bool Processor::operator()(FDMat* mat) {
-  ProcLib target = lib;
+  ProcLib target = mat->proc_lib;
-  if (lib == ProcLib::DEFAULT) {
+  if (mat->proc_lib == ProcLib::DEFAULT) {
     target = DefaultProcLib::default_lib;
   }
   if (target == ProcLib::FLYCV) {
@@ -52,9 +52,14 @@ bool Processor::operator()(FDMat* mat, ProcLib lib) {
   return ImplByOpenCV(mat);
 }
 
-bool Processor::operator()(FDMatBatch* mat_batch, ProcLib lib) {
+bool Processor::operator()(FDMat* mat, ProcLib lib) {
-  ProcLib target = lib;
+  mat->proc_lib = lib;
-  if (lib == ProcLib::DEFAULT) {
+  return operator()(mat);
+}
+
+bool Processor::operator()(FDMatBatch* mat_batch) {
+  ProcLib target = mat_batch->proc_lib;
+  if (mat_batch->proc_lib == ProcLib::DEFAULT) {
     target = DefaultProcLib::default_lib;
   }
   if (target == ProcLib::FLYCV) {

fastdeploy/vision/common/processors/base.h

@@ -100,10 +100,13 @@ class FASTDEPLOY_DECL Processor {
     return true;
   }
 
-  virtual bool operator()(FDMat* mat, ProcLib lib = ProcLib::DEFAULT);
+  virtual bool operator()(FDMat* mat);
 
-  virtual bool operator()(FDMatBatch* mat_batch,
+  // This function is for backward compatibility, will be removed in the near
-                          ProcLib lib = ProcLib::DEFAULT);
+  // future, please use operator()(FDMat* mat) instead and set proc_lib in mat.
+  virtual bool operator()(FDMat* mat, ProcLib lib);
+
+  virtual bool operator()(FDMatBatch* mat_batch);
 };
 
 }  // namespace vision

fastdeploy/vision/common/processors/center_crop.cc

@@ -14,12 +14,6 @@
 
 #include "fastdeploy/vision/common/processors/center_crop.h"
 
-#ifdef ENABLE_CVCUDA
-#include <cvcuda/OpCustomCrop.hpp>
-
-#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
-#endif
-
 namespace fastdeploy {
 namespace vision {
 
@@ -75,9 +69,8 @@ bool CenterCrop::ImplByCvCuda(FDMat* mat) {
 
   int offset_x = static_cast<int>((mat->Width() - width_) / 2);
   int offset_y = static_cast<int>((mat->Height() - height_) / 2);
-  cvcuda::CustomCrop crop_op;
   NVCVRectI crop_roi = {offset_x, offset_y, width_, height_};
-  crop_op(mat->Stream(), src_tensor, dst_tensor, crop_roi);
+  cvcuda_crop_op_(mat->Stream(), src_tensor, dst_tensor, crop_roi);
 
   mat->SetTensor(mat->output_cache);
   mat->SetWidth(width_);

fastdeploy/vision/common/processors/center_crop.h

@@ -15,6 +15,11 @@
 #pragma once
 
 #include "fastdeploy/vision/common/processors/base.h"
+#ifdef ENABLE_CVCUDA
+#include <cvcuda/OpCustomCrop.hpp>
+
+#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
+#endif
 
 namespace fastdeploy {
 namespace vision {
@@ -38,6 +43,9 @@ class FASTDEPLOY_DECL CenterCrop : public Processor {
  private:
   int height_;
   int width_;
+#ifdef ENABLE_CVCUDA
+  cvcuda::CustomCrop cvcuda_crop_op_;
+#endif
 };
 
 }  // namespace vision

fastdeploy/vision/common/processors/manager.cc

@@ -31,14 +31,14 @@ void ProcessorManager::UseCuda(bool enable_cv_cuda, int gpu_id) {
   }
   FDASSERT(cudaStreamCreate(&stream_) == cudaSuccess,
            "[ERROR] Error occurs while creating cuda stream.");
-  DefaultProcLib::default_lib = ProcLib::CUDA;
+  proc_lib_ = ProcLib::CUDA;
 #else
   FDASSERT(false, "FastDeploy didn't compile with WITH_GPU.");
 #endif
 
   if (enable_cv_cuda) {
 #ifdef ENABLE_CVCUDA
-    DefaultProcLib::default_lib = ProcLib::CVCUDA;
+    proc_lib_ = ProcLib::CVCUDA;
 #else
     FDASSERT(false, "FastDeploy didn't compile with CV-CUDA.");
 #endif
@@ -46,16 +46,11 @@ void ProcessorManager::UseCuda(bool enable_cv_cuda, int gpu_id) {
 }
 
 bool ProcessorManager::CudaUsed() {
-  return (DefaultProcLib::default_lib == ProcLib::CUDA ||
+  return (proc_lib_ == ProcLib::CUDA || proc_lib_ == ProcLib::CVCUDA);
-          DefaultProcLib::default_lib == ProcLib::CVCUDA);
 }
 
 bool ProcessorManager::Run(std::vector<FDMat>* images,
                            std::vector<FDTensor>* outputs) {
-  if (!initialized_) {
-    FDERROR << "The preprocessor is not initialized." << std::endl;
-    return false;
-  }
   if (images->size() == 0) {
     FDERROR << "The size of input images should be greater than 0."
             << std::endl;
@@ -70,6 +65,7 @@ bool ProcessorManager::Run(std::vector<FDMat>* images,
   FDMatBatch image_batch(images);
   image_batch.input_cache = &batch_input_cache_;
   image_batch.output_cache = &batch_output_cache_;
+  image_batch.proc_lib = proc_lib_;
 
   for (size_t i = 0; i < images->size(); ++i) {
     if (CudaUsed()) {

fastdeploy/vision/common/processors/manager.h

@@ -17,6 +17,7 @@
 #include "fastdeploy/utils/utils.h"
 #include "fastdeploy/vision/common/processors/mat.h"
 #include "fastdeploy/vision/common/processors/mat_batch.h"
+#include "fastdeploy/vision/common/processors/base.h"
 
 namespace fastdeploy {
 namespace vision {
@@ -78,7 +79,7 @@ class FASTDEPLOY_DECL ProcessorManager {
                      std::vector<FDTensor>* outputs) = 0;
 
  protected:
-  bool initialized_ = false;
+  ProcLib proc_lib_ = ProcLib::DEFAULT;
 
  private:
 #ifdef WITH_GPU

fastdeploy/vision/common/processors/mat.h

@@ -145,6 +145,7 @@ struct FASTDEPLOY_DECL Mat {
   ProcLib mat_type = ProcLib::OPENCV;
   Layout layout = Layout::HWC;
   Device device = Device::CPU;
+  ProcLib proc_lib = ProcLib::DEFAULT;
 
   // Create FD Mat from FD Tensor. This method only create a
   // new FD Mat with zero copy and it's data pointer is reference

fastdeploy/vision/common/processors/mat_batch.cc

@@ -67,6 +67,7 @@ FDTensor* CreateCachedGpuInputTensor(FDMatBatch* mat_batch) {
       FDTensor* tensor = CreateCachedGpuInputTensor(&(*mats)[i]);
       (*mats)[i].SetTensor(tensor);
     }
+    mat_batch->device = Device::GPU;
     return mat_batch->Tensor();
   } else {
     FDASSERT(false, "FDMat is on unsupported device: %d", src->device);

fastdeploy/vision/common/processors/mat_batch.h

@@ -60,6 +60,7 @@ struct FASTDEPLOY_DECL FDMatBatch {
   ProcLib mat_type = ProcLib::OPENCV;
   FDMatBatchLayout layout = FDMatBatchLayout::NHWC;
   Device device = Device::CPU;
+  ProcLib proc_lib = ProcLib::DEFAULT;
 
   // False: the data is stored in the mats separately
   // True: the data is stored in the fd_tensor continuously in 4 dimensions

fastdeploy/vision/common/processors/normalize_and_permute.cu

@@ -85,6 +85,8 @@ bool NormalizeAndPermute::ImplByCuda(FDMatBatch* mat_batch) {
   // NHWC -> NCHW
   std::swap(mat_batch->output_cache->shape[1],
             mat_batch->output_cache->shape[3]);
+  std::swap(mat_batch->output_cache->shape[2],
+            mat_batch->output_cache->shape[3]);
 
   // Copy alpha and beta to GPU
   gpu_alpha_.Resize({1, 1, static_cast<int>(alpha_.size())}, FDDataType::FP32,

fastdeploy/vision/common/processors/pad.cc

@@ -91,6 +91,60 @@ bool Pad::ImplByFlyCV(Mat* mat) {
 }
 #endif
 
+#ifdef ENABLE_CVCUDA
+bool Pad::ImplByCvCuda(FDMat* mat) {
+  if (mat->layout != Layout::HWC) {
+    FDERROR << "Pad: The input data must be Layout::HWC format!" << std::endl;
+    return false;
+  }
+  if (mat->Channels() > 4) {
+    FDERROR << "Pad: Only support channels <= 4." << std::endl;
+    return false;
+  }
+  if (mat->Channels() != value_.size()) {
+    FDERROR << "Pad: Require input channels equals to size of padding value, "
+               "but now channels = "
+            << mat->Channels()
+            << ", the size of padding values = " << value_.size() << "."
+            << std::endl;
+    return false;
+  }
+
+  float4 value;
+  if (value_.size() == 1) {
+    value = make_float4(value_[0], 0.0f, 0.0f, 0.0f);
+  } else if (value_.size() == 2) {
+    value = make_float4(value_[0], value_[1], 0.0f, 0.0f);
+  } else if (value_.size() == 3) {
+    value = make_float4(value_[0], value_[1], value_[2], 0.0f);
+  } else {
+    value = make_float4(value_[0], value_[1], value_[2], value_[3]);
+  }
+
+  // Prepare input tensor
+  FDTensor* src = CreateCachedGpuInputTensor(mat);
+  auto src_tensor = CreateCvCudaTensorWrapData(*src);
+
+  int height = mat->Height() + top_ + bottom_;
+  int width = mat->Height() + left_ + right_;
+
+  // Prepare output tensor
+  mat->output_cache->Resize({height, width, mat->Channels()}, mat->Type(),
+                            "output_cache", Device::GPU);
+  auto dst_tensor = CreateCvCudaTensorWrapData(*(mat->output_cache));
+
+  cvcuda_pad_op_(mat->Stream(), src_tensor, dst_tensor, top_, left_,
+                 NVCV_BORDER_CONSTANT, value);
+
+  mat->SetTensor(mat->output_cache);
+  mat->SetWidth(width);
+  mat->SetHeight(height);
+  mat->device = Device::GPU;
+  mat->mat_type = ProcLib::CVCUDA;
+  return true;
+}
+#endif
+
 bool Pad::Run(Mat* mat, const int& top, const int& bottom, const int& left,
               const int& right, const std::vector<float>& value, ProcLib lib) {
   auto p = Pad(top, bottom, left, right, value);

fastdeploy/vision/common/processors/pad.h

@@ -15,6 +15,11 @@
 #pragma once
 
 #include "fastdeploy/vision/common/processors/base.h"
+#ifdef ENABLE_CVCUDA
+#include <cvcuda/OpCopyMakeBorder.hpp>
+
+#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
+#endif
 
 namespace fastdeploy {
 namespace vision {
@@ -32,6 +37,9 @@ class FASTDEPLOY_DECL Pad : public Processor {
   bool ImplByOpenCV(Mat* mat);
 #ifdef ENABLE_FLYCV
   bool ImplByFlyCV(Mat* mat);
+#endif
+#ifdef ENABLE_CVCUDA
+  bool ImplByCvCuda(FDMat* mat);
 #endif
   std::string Name() { return "Pad"; }
 
@@ -39,12 +47,23 @@ class FASTDEPLOY_DECL Pad : public Processor {
                   const int& right, const std::vector<float>& value,
                   ProcLib lib = ProcLib::DEFAULT);
 
+  bool SetPaddingSize(int top, int bottom, int left, int right) {
+    top_ = top;
+    bottom_ = bottom;
+    left_ = left;
+    right_ = right;
+    return true;
+  }
+
  private:
   int top_;
   int bottom_;
   int left_;
   int right_;
   std::vector<float> value_;
+#ifdef ENABLE_CVCUDA
+  cvcuda::CopyMakeBorder cvcuda_pad_op_;
+#endif
 };
 }  // namespace vision
 }  // namespace fastdeploy

fastdeploy/vision/common/processors/resize.cc

@@ -14,12 +14,6 @@
 
 #include "fastdeploy/vision/common/processors/resize.h"
 
-#ifdef ENABLE_CVCUDA
-#include <cvcuda/OpResize.hpp>
-
-#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
-#endif
-
 namespace fastdeploy {
 namespace vision {
 
@@ -152,8 +146,7 @@ bool Resize::ImplByCvCuda(FDMat* mat) {
   auto dst_tensor = CreateCvCudaTensorWrapData(*(mat->output_cache));
 
   // CV-CUDA Interp value is compatible with OpenCV
-  cvcuda::Resize resize_op;
+  cvcuda_resize_op_(mat->Stream(), src_tensor, dst_tensor,
-  resize_op(mat->Stream(), src_tensor, dst_tensor,
                     NVCVInterpolationType(interp_));
 
   mat->SetTensor(mat->output_cache);

fastdeploy/vision/common/processors/resize.h

@@ -15,6 +15,11 @@
 #pragma once
 
 #include "fastdeploy/vision/common/processors/base.h"
+#ifdef ENABLE_CVCUDA
+#include <cvcuda/OpResize.hpp>
+
+#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
+#endif
 
 namespace fastdeploy {
 namespace vision {
@@ -61,6 +66,9 @@ class FASTDEPLOY_DECL Resize : public Processor {
   float scale_h_ = -1.0;
   int interp_ = 1;
   bool use_scale_ = false;
+#ifdef ENABLE_CVCUDA
+  cvcuda::Resize cvcuda_resize_op_;
+#endif
 };
 }  // namespace vision
 }  // namespace fastdeploy

fastdeploy/vision/common/processors/resize_by_short.cc

@@ -14,12 +14,6 @@
 
 #include "fastdeploy/vision/common/processors/resize_by_short.h"
 
-#ifdef ENABLE_CVCUDA
-#include <cvcuda/OpResize.hpp>
-
-#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
-#endif
-
 namespace fastdeploy {
 namespace vision {
 
@@ -102,8 +96,7 @@ bool ResizeByShort::ImplByCvCuda(FDMat* mat) {
   auto dst_tensor = CreateCvCudaTensorWrapData(*(mat->output_cache));
 
   // CV-CUDA Interp value is compatible with OpenCV
-  cvcuda::Resize resize_op;
+  cvcuda_resize_op_(mat->Stream(), src_tensor, dst_tensor,
-  resize_op(mat->Stream(), src_tensor, dst_tensor,
                     NVCVInterpolationType(interp_));
 
   mat->SetTensor(mat->output_cache);
@@ -144,8 +137,7 @@ bool ResizeByShort::ImplByCvCuda(FDMatBatch* mat_batch) {
   CreateCvCudaImageBatchVarShape(dst_tensors, dst_batch);
 
   // CV-CUDA Interp value is compatible with OpenCV
-  cvcuda::Resize resize_op;
+  cvcuda_resize_op_(mat_batch->Stream(), src_batch, dst_batch,
-  resize_op(mat_batch->Stream(), src_batch, dst_batch,
                     NVCVInterpolationType(interp_));
 
   for (size_t i = 0; i < mat_batch->mats->size(); ++i) {

fastdeploy/vision/common/processors/resize_by_short.h

@@ -15,6 +15,11 @@
 #pragma once
 
 #include "fastdeploy/vision/common/processors/base.h"
+#ifdef ENABLE_CVCUDA
+#include <cvcuda/OpResize.hpp>
+
+#include "fastdeploy/vision/common/processors/cvcuda_utils.h"
+#endif
 
 namespace fastdeploy {
 namespace vision {
@@ -49,6 +54,9 @@ class FASTDEPLOY_DECL ResizeByShort : public Processor {
   std::vector<int> max_hw_;
   int interp_;
   bool use_scale_;
+#ifdef ENABLE_CVCUDA
+  cvcuda::Resize cvcuda_resize_op_;
+#endif
 };
 }  // namespace vision
 }  // namespace fastdeploy

fastdeploy/vision/ocr/ppocr/dbdetector.cc

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include "fastdeploy/vision/ocr/ppocr/dbdetector.h"
+
 #include "fastdeploy/utils/perf.h"
 #include "fastdeploy/vision/ocr/ppocr/utils/ocr_utils.h"
 
@@ -26,11 +27,11 @@ DBDetector::DBDetector(const std::string& model_file,
                        const RuntimeOption& custom_option,
                        const ModelFormat& model_format) {
   if (model_format == ModelFormat::ONNX) {
-    valid_cpu_backends = {Backend::ORT,
+    valid_cpu_backends = {Backend::ORT, Backend::OPENVINO};
-                          Backend::OPENVINO};  
     valid_gpu_backends = {Backend::ORT, Backend::TRT};
   } else {
-    valid_cpu_backends = {Backend::PDINFER, Backend::ORT, Backend::OPENVINO, Backend::LITE};
+    valid_cpu_backends = {Backend::PDINFER, Backend::ORT, Backend::OPENVINO,
+                          Backend::LITE};
     valid_gpu_backends = {Backend::PDINFER, Backend::ORT, Backend::TRT};
     valid_kunlunxin_backends = {Backend::LITE};
     valid_ascend_backends = {Backend::LITE};
@@ -54,7 +55,8 @@ bool DBDetector::Initialize() {
 }
 
 std::unique_ptr<DBDetector> DBDetector::Clone() const {
-  std::unique_ptr<DBDetector> clone_model = utils::make_unique<DBDetector>(DBDetector(*this));
+  std::unique_ptr<DBDetector> clone_model =
+      utils::make_unique<DBDetector>(DBDetector(*this));
   clone_model->SetRuntime(clone_model->CloneRuntime());
   return clone_model;
 }
@@ -69,14 +71,15 @@ bool DBDetector::Predict(const cv::Mat& img,
   return true;
 }
 
-bool DBDetector::BatchPredict(const std::vector<cv::Mat>& images,
+bool DBDetector::BatchPredict(
+    const std::vector<cv::Mat>& images,
     std::vector<std::vector<std::array<int, 8>>>* det_results) {
   std::vector<FDMat> fd_images = WrapMat(images);
-  std::vector<std::array<int, 4>> batch_det_img_info;
+  if (!preprocessor_.Run(&fd_images, &reused_input_tensors_)) {
-  if (!preprocessor_.Run(&fd_images, &reused_input_tensors_, &batch_det_img_info)) {
     FDERROR << "Failed to preprocess input image." << std::endl;
     return false;
   }
+  auto batch_det_img_info = preprocessor_.GetBatchImgInfo();
 
   reused_input_tensors_[0].name = InputInfoOfRuntime(0).name;
   if (!Infer(reused_input_tensors_, &reused_output_tensors_)) {
@@ -84,13 +87,15 @@ bool DBDetector::BatchPredict(const std::vector<cv::Mat>& images,
     return false;
   }
 
-  if (!postprocessor_.Run(reused_output_tensors_, det_results, batch_det_img_info)) {
+  if (!postprocessor_.Run(reused_output_tensors_, det_results,
-    FDERROR << "Failed to postprocess the inference cls_results by runtime." << std::endl;
+                          *batch_det_img_info)) {
+    FDERROR << "Failed to postprocess the inference cls_results by runtime."
+            << std::endl;
     return false;
   }
   return true;
 }
 
-}  // namesapce ocr
+}  // namespace ocr
 }  // namespace vision
 }  // namespace fastdeploy

fastdeploy/vision/ocr/ppocr/det_preprocessor.cc

@@ -13,9 +13,8 @@
 // limitations under the License.
 
 #include "fastdeploy/vision/ocr/ppocr/det_preprocessor.h"
-#include "fastdeploy/utils/perf.h"
+
 #include "fastdeploy/vision/ocr/ppocr/utils/ocr_utils.h"
-#include "fastdeploy/function/concat.h"
 
 namespace fastdeploy {
 namespace vision {
@@ -45,58 +44,55 @@ std::array<int, 4> OcrDetectorGetInfo(FDMat* img, int max_size_len) {
    *ratio_w = float(resize_w) / float(w);
    */
 }
-bool OcrDetectorResizeImage(FDMat* img,
+
-                            int resize_w,
+DBDetectorPreprocessor::DBDetectorPreprocessor() {
-                            int resize_h,
+  resize_op_ = std::make_shared<Resize>(-1, -1);
-                            int max_resize_w,
+
-                            int max_resize_h) {
-  Resize::Run(img, resize_w, resize_h);
   std::vector<float> value = {0, 0, 0};
-  Pad::Run(img, 0, max_resize_h-resize_h, 0, max_resize_w - resize_w, value);
+  pad_op_ = std::make_shared<Pad>(0, 0, 0, 0, value);
+
+  std::vector<float> mean = {0.485f, 0.456f, 0.406f};
+  std::vector<float> std = {0.229f, 0.224f, 0.225f};
+  bool is_scale = true;
+  normalize_permute_op_ =
+      std::make_shared<NormalizeAndPermute>(mean, std, is_scale);
+}
+
+bool DBDetectorPreprocessor::ResizeImage(FDMat* img, int resize_w, int resize_h,
+                                         int max_resize_w, int max_resize_h) {
+  resize_op_->SetWidthAndHeight(resize_w, resize_h);
+  (*resize_op_)(img);
+
+  pad_op_->SetPaddingSize(0, max_resize_h - resize_h, 0,
+                          max_resize_w - resize_w);
+  (*pad_op_)(img);
   return true;
 }
 
-bool DBDetectorPreprocessor::Run(std::vector<FDMat>* images,
+bool DBDetectorPreprocessor::Apply(FDMatBatch* image_batch,
-                                 std::vector<FDTensor>* outputs,
+                                   std::vector<FDTensor>* outputs) {
-                                 std::vector<std::array<int, 4>>* batch_det_img_info_ptr) {
-  if (images->size() == 0) {
-    FDERROR << "The size of input images should be greater than 0." << std::endl;
-    return false;
-  }
   int max_resize_w = 0;
   int max_resize_h = 0;
-  std::vector<std::array<int, 4>>& batch_det_img_info = *batch_det_img_info_ptr;
+  batch_det_img_info_.clear();
-  batch_det_img_info.clear();
+  batch_det_img_info_.resize(image_batch->mats->size());
-  batch_det_img_info.resize(images->size());
+  for (size_t i = 0; i < image_batch->mats->size(); ++i) {
-  for (size_t i = 0; i < images->size(); ++i) {
+    FDMat* mat = &(image_batch->mats->at(i));
-    FDMat* mat = &(images->at(i));
+    batch_det_img_info_[i] = OcrDetectorGetInfo(mat, max_side_len_);
-    batch_det_img_info[i] = OcrDetectorGetInfo(mat,max_side_len_);
+    max_resize_w = std::max(max_resize_w, batch_det_img_info_[i][2]);
-    max_resize_w = std::max(max_resize_w,batch_det_img_info[i][2]);
+    max_resize_h = std::max(max_resize_h, batch_det_img_info_[i][3]);
-    max_resize_h = std::max(max_resize_h,batch_det_img_info[i][3]);
   }
-  for (size_t i = 0; i < images->size(); ++i) {
+  for (size_t i = 0; i < image_batch->mats->size(); ++i) {
-    FDMat* mat = &(images->at(i));
+    FDMat* mat = &(image_batch->mats->at(i));
-    OcrDetectorResizeImage(mat, batch_det_img_info[i][2],batch_det_img_info[i][3],max_resize_w,max_resize_h);
+    ResizeImage(mat, batch_det_img_info_[i][2], batch_det_img_info_[i][3],
-    NormalizeAndPermute::Run(mat, mean_, scale_, is_scale_);
+                max_resize_w, max_resize_h);
-    /*
-    Normalize::Run(mat, mean_, scale_, is_scale_);
-    HWC2CHW::Run(mat);
-    Cast::Run(mat, "float");
-    */
   }
-  // Only have 1 output Tensor.
+  (*normalize_permute_op_)(image_batch);
+
   outputs->resize(1);
-  // Concat all the preprocessed data to a batch tensor
+  FDTensor* tensor = image_batch->Tensor();
-  std::vector<FDTensor> tensors(images->size()); 
+  (*outputs)[0].SetExternalData(tensor->Shape(), tensor->Dtype(),
-  for (size_t i = 0; i < images->size(); ++i) {
+                                tensor->Data(), tensor->device,
-    (*images)[i].ShareWithTensor(&(tensors[i]));
+                                tensor->device_id);
-    tensors[i].ExpandDim(0);
-  }
-  if (tensors.size() == 1) {
-    (*outputs)[0] = std::move(tensors[0]);
-  } else {
-    function::Concat(tensors, &((*outputs)[0]), 0);
-  }
   return true;
 }
 

fastdeploy/vision/ocr/ppocr/det_preprocessor.h

@@ -13,7 +13,10 @@
 // limitations under the License.
 
 #pragma once
-#include "fastdeploy/vision/common/processors/transform.h"
+#include "fastdeploy/vision/common/processors/manager.h"
+#include "fastdeploy/vision/common/processors/resize.h"
+#include "fastdeploy/vision/common/processors/pad.h"
+#include "fastdeploy/vision/common/processors/normalize_and_permute.h"
 #include "fastdeploy/vision/common/result.h"
 
 namespace fastdeploy {
@@ -22,43 +25,48 @@ namespace vision {
 namespace ocr {
 /*! @brief Preprocessor object for DBDetector serials model.
  */
-class FASTDEPLOY_DECL DBDetectorPreprocessor {
+class FASTDEPLOY_DECL DBDetectorPreprocessor : public ProcessorManager {
  public:
+  DBDetectorPreprocessor();
+
   /** \brief Process the input image and prepare input tensors for runtime
    *
-   * \param[in] images The input data list, all the elements are FDMat
+   * \param[in] image_batch The input image batch
    * \param[in] outputs The output tensors which will feed in runtime
-   * \param[in] batch_det_img_info_ptr The output of preprocess
    * \return true if the preprocess successed, otherwise false
    */
-  bool Run(std::vector<FDMat>* images, std::vector<FDTensor>* outputs,
+  virtual bool Apply(FDMatBatch* image_batch, std::vector<FDTensor>* outputs);
-           std::vector<std::array<int, 4>>* batch_det_img_info_ptr);
 
   /// Set max_side_len for the detection preprocess, default is 960
   void SetMaxSideLen(int max_side_len) { max_side_len_ = max_side_len; }
+
   /// Get max_side_len of the detection preprocess
   int GetMaxSideLen() const { return max_side_len_; }
 
-  /// Set mean value for the image normalization in detection preprocess
+  /// Set preprocess normalize parameters, please call this API to customize
-  void SetMean(const std::vector<float>& mean) { mean_ = mean; }
+  /// the normalize parameters, otherwise it will use the default normalize
-  /// Get mean value of the image normalization in detection preprocess
+  /// parameters.
-  std::vector<float> GetMean() const { return mean_; }
+  void SetNormalize(const std::vector<float>& mean = {0.485f, 0.456f, 0.406f},
+                    const std::vector<float>& std = {0.229f, 0.224f, 0.225f},
+                    bool is_scale = true) {
+    normalize_permute_op_ =
+        std::make_shared<NormalizeAndPermute>(mean, std, is_scale);
+  }
 
-  /// Set scale value for the image normalization in detection preprocess
+  /// Get the image info of the last batch, return a list of array
-  void SetScale(const std::vector<float>& scale) { scale_ = scale; }
+  /// {image width, image height, resize width, resize height}
-  /// Get scale value of the image normalization in detection preprocess
+  const std::vector<std::array<int, 4>>* GetBatchImgInfo() {
-  std::vector<float> GetScale() const { return scale_; }
+    return &batch_det_img_info_;
-
+  }
-  /// Set is_scale for the image normalization in detection preprocess
-  void SetIsScale(bool is_scale) { is_scale_ = is_scale; }
-  /// Get is_scale of the image normalization in detection preprocess
-  bool GetIsScale() const { return is_scale_; }
 
  private:
+  bool ResizeImage(FDMat* img, int resize_w, int resize_h, int max_resize_w,
+                   int max_resize_h);
   int max_side_len_ = 960;
-  std::vector<float> mean_ = {0.485f, 0.456f, 0.406f};
+  std::vector<std::array<int, 4>> batch_det_img_info_;
-  std::vector<float> scale_ = {0.229f, 0.224f, 0.225f};
+  std::shared_ptr<Resize> resize_op_;
-  bool is_scale_ = true;
+  std::shared_ptr<Pad> pad_op_;
+  std::shared_ptr<NormalizeAndPermute> normalize_permute_op_;
 };
 
 }  // namespace ocr

fastdeploy/vision/ocr/ppocr/ocrmodel_pybind.cc

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 #include <pybind11/stl.h>
+
 #include "fastdeploy/pybind/main.h"
 
 namespace fastdeploy {
@@ -22,52 +23,74 @@ void BindPPOCRModel(pybind11::module& m) {
   });
 
   // DBDetector
-  pybind11::class_<vision::ocr::DBDetectorPreprocessor>(m, "DBDetectorPreprocessor")
+  pybind11::class_<vision::ocr::DBDetectorPreprocessor>(
+      m, "DBDetectorPreprocessor")
       .def(pybind11::init<>())
-      .def_property("max_side_len", &vision::ocr::DBDetectorPreprocessor::GetMaxSideLen, &vision::ocr::DBDetectorPreprocessor::SetMaxSideLen)
+      .def_property("max_side_len",
-      .def_property("mean", &vision::ocr::DBDetectorPreprocessor::GetMean, &vision::ocr::DBDetectorPreprocessor::SetMean)
+                    &vision::ocr::DBDetectorPreprocessor::GetMaxSideLen,
-      .def_property("scale", &vision::ocr::DBDetectorPreprocessor::GetScale, &vision::ocr::DBDetectorPreprocessor::SetScale)
+                    &vision::ocr::DBDetectorPreprocessor::SetMaxSideLen)
-      .def_property("is_scale", &vision::ocr::DBDetectorPreprocessor::GetIsScale, &vision::ocr::DBDetectorPreprocessor::SetIsScale)
+      .def("set_normalize",
-      .def("run", [](vision::ocr::DBDetectorPreprocessor& self, std::vector<pybind11::array>& im_list) {
+           [](vision::ocr::DBDetectorPreprocessor& self,
+              const std::vector<float>& mean, const std::vector<float>& std,
+              bool is_scale) { self.SetNormalize(mean, std, is_scale); })
+      .def("run", [](vision::ocr::DBDetectorPreprocessor& self,
+                     std::vector<pybind11::array>& im_list) {
         std::vector<vision::FDMat> images;
         for (size_t i = 0; i < im_list.size(); ++i) {
           images.push_back(vision::WrapMat(PyArrayToCvMat(im_list[i])));
         }
         std::vector<FDTensor> outputs;
-        std::vector<std::array<int, 4>> batch_det_img_info;
+        self.Run(&images, &outputs);
-        self.Run(&images, &outputs, &batch_det_img_info);
+        auto batch_det_img_info = self.GetBatchImgInfo();
         for (size_t i = 0; i < outputs.size(); ++i) {
           outputs[i].StopSharing();
         }
-        return std::make_pair(outputs, batch_det_img_info);
+        return std::make_pair(outputs, *batch_det_img_info);
       });
 
-  pybind11::class_<vision::ocr::DBDetectorPostprocessor>(m, "DBDetectorPostprocessor")
+  pybind11::class_<vision::ocr::DBDetectorPostprocessor>(
+      m, "DBDetectorPostprocessor")
       .def(pybind11::init<>())
-      .def_property("det_db_thresh", &vision::ocr::DBDetectorPostprocessor::GetDetDBThresh, &vision::ocr::DBDetectorPostprocessor::SetDetDBThresh) 
+      .def_property("det_db_thresh",
-      .def_property("det_db_box_thresh", &vision::ocr::DBDetectorPostprocessor::GetDetDBBoxThresh, &vision::ocr::DBDetectorPostprocessor::SetDetDBBoxThresh) 
+                    &vision::ocr::DBDetectorPostprocessor::GetDetDBThresh,
-      .def_property("det_db_unclip_ratio", &vision::ocr::DBDetectorPostprocessor::GetDetDBUnclipRatio, &vision::ocr::DBDetectorPostprocessor::SetDetDBUnclipRatio) 
+                    &vision::ocr::DBDetectorPostprocessor::SetDetDBThresh)
-      .def_property("det_db_score_mode", &vision::ocr::DBDetectorPostprocessor::GetDetDBScoreMode, &vision::ocr::DBDetectorPostprocessor::SetDetDBScoreMode) 
+      .def_property("det_db_box_thresh",
-      .def_property("use_dilation", &vision::ocr::DBDetectorPostprocessor::GetUseDilation, &vision::ocr::DBDetectorPostprocessor::SetUseDilation) 
+                    &vision::ocr::DBDetectorPostprocessor::GetDetDBBoxThresh,
+                    &vision::ocr::DBDetectorPostprocessor::SetDetDBBoxThresh)
+      .def_property("det_db_unclip_ratio",
+                    &vision::ocr::DBDetectorPostprocessor::GetDetDBUnclipRatio,
+                    &vision::ocr::DBDetectorPostprocessor::SetDetDBUnclipRatio)
+      .def_property("det_db_score_mode",
+                    &vision::ocr::DBDetectorPostprocessor::GetDetDBScoreMode,
+                    &vision::ocr::DBDetectorPostprocessor::SetDetDBScoreMode)
+      .def_property("use_dilation",
+                    &vision::ocr::DBDetectorPostprocessor::GetUseDilation,
+                    &vision::ocr::DBDetectorPostprocessor::SetUseDilation)
 
-      .def("run", [](vision::ocr::DBDetectorPostprocessor& self,
+      .def("run",
+           [](vision::ocr::DBDetectorPostprocessor& self,
               std::vector<FDTensor>& inputs,
               const std::vector<std::array<int, 4>>& batch_det_img_info) {
              std::vector<std::vector<std::array<int, 8>>> results;
 
              if (!self.Run(inputs, &results, batch_det_img_info)) {
-          throw std::runtime_error("Failed to preprocess the input data in DBDetectorPostprocessor.");
+               throw std::runtime_error(
+                   "Failed to preprocess the input data in "
+                   "DBDetectorPostprocessor.");
              }
              return results;
            })
-      .def("run", [](vision::ocr::DBDetectorPostprocessor& self,
+      .def("run",
+           [](vision::ocr::DBDetectorPostprocessor& self,
               std::vector<pybind11::array>& input_array,
               const std::vector<std::array<int, 4>>& batch_det_img_info) {
              std::vector<std::vector<std::array<int, 8>>> results;
              std::vector<FDTensor> inputs;
              PyArrayToTensorList(input_array, &inputs, /*share_buffer=*/true);
              if (!self.Run(inputs, &results, batch_det_img_info)) {
-          throw std::runtime_error("Failed to preprocess the input data in DBDetectorPostprocessor.");
+               throw std::runtime_error(
+                   "Failed to preprocess the input data in "
+                   "DBDetectorPostprocessor.");
              }
              return results;
            });
@@ -76,16 +99,19 @@ void BindPPOCRModel(pybind11::module& m) {
       .def(pybind11::init<std::string, std::string, RuntimeOption,
                           ModelFormat>())
       .def(pybind11::init<>())
-      .def_property_readonly("preprocessor", &vision::ocr::DBDetector::GetPreprocessor)
+      .def_property_readonly("preprocessor",
-      .def_property_readonly("postprocessor", &vision::ocr::DBDetector::GetPostprocessor)
+                             &vision::ocr::DBDetector::GetPreprocessor)
-      .def("predict", [](vision::ocr::DBDetector& self,
+      .def_property_readonly("postprocessor",
-                         pybind11::array& data) {
+                             &vision::ocr::DBDetector::GetPostprocessor)
+      .def("predict",
+           [](vision::ocr::DBDetector& self, pybind11::array& data) {
              auto mat = PyArrayToCvMat(data);
              std::vector<std::array<int, 8>> boxes_result;
              self.Predict(mat, &boxes_result);
              return boxes_result;
            })
-      .def("batch_predict", [](vision::ocr::DBDetector& self, std::vector<pybind11::array>& data) {
+      .def("batch_predict", [](vision::ocr::DBDetector& self,
+                               std::vector<pybind11::array>& data) {
         std::vector<cv::Mat> images;
         std::vector<std::vector<std::array<int, 8>>> det_results;
         for (size_t i = 0; i < data.size(); ++i) {
@@ -96,20 +122,29 @@ void BindPPOCRModel(pybind11::module& m) {
       });
 
   // Classifier
-  pybind11::class_<vision::ocr::ClassifierPreprocessor>(m, "ClassifierPreprocessor")
+  pybind11::class_<vision::ocr::ClassifierPreprocessor>(
+      m, "ClassifierPreprocessor")
       .def(pybind11::init<>())
-      .def_property("cls_image_shape", &vision::ocr::ClassifierPreprocessor::GetClsImageShape, &vision::ocr::ClassifierPreprocessor::SetClsImageShape)
+      .def_property("cls_image_shape",
-      .def_property("mean", &vision::ocr::ClassifierPreprocessor::GetMean, &vision::ocr::ClassifierPreprocessor::SetMean)
+                    &vision::ocr::ClassifierPreprocessor::GetClsImageShape,
-      .def_property("scale", &vision::ocr::ClassifierPreprocessor::GetScale, &vision::ocr::ClassifierPreprocessor::SetScale)
+                    &vision::ocr::ClassifierPreprocessor::SetClsImageShape)
-      .def_property("is_scale", &vision::ocr::ClassifierPreprocessor::GetIsScale, &vision::ocr::ClassifierPreprocessor::SetIsScale)
+      .def_property("mean", &vision::ocr::ClassifierPreprocessor::GetMean,
-      .def("run", [](vision::ocr::ClassifierPreprocessor& self, std::vector<pybind11::array>& im_list) {
+                    &vision::ocr::ClassifierPreprocessor::SetMean)
+      .def_property("scale", &vision::ocr::ClassifierPreprocessor::GetScale,
+                    &vision::ocr::ClassifierPreprocessor::SetScale)
+      .def_property("is_scale",
+                    &vision::ocr::ClassifierPreprocessor::GetIsScale,
+                    &vision::ocr::ClassifierPreprocessor::SetIsScale)
+      .def("run", [](vision::ocr::ClassifierPreprocessor& self,
+                     std::vector<pybind11::array>& im_list) {
         std::vector<vision::FDMat> images;
         for (size_t i = 0; i < im_list.size(); ++i) {
           images.push_back(vision::WrapMat(PyArrayToCvMat(im_list[i])));
         }
         std::vector<FDTensor> outputs;
         if (!self.Run(&images, &outputs)) {
-          throw std::runtime_error("Failed to preprocess the input data in ClassifierPreprocessor.");
+          throw std::runtime_error(
+              "Failed to preprocess the input data in ClassifierPreprocessor.");
         }
         for (size_t i = 0; i < outputs.size(); ++i) {
           outputs[i].StopSharing();
@@ -117,15 +152,21 @@ void BindPPOCRModel(pybind11::module& m) {
         return outputs;
       });
 
-  pybind11::class_<vision::ocr::ClassifierPostprocessor>(m, "ClassifierPostprocessor")
+  pybind11::class_<vision::ocr::ClassifierPostprocessor>(
+      m, "ClassifierPostprocessor")
       .def(pybind11::init<>())
-      .def_property("cls_thresh", &vision::ocr::ClassifierPostprocessor::GetClsThresh, &vision::ocr::ClassifierPostprocessor::SetClsThresh) 
+      .def_property("cls_thresh",
-      .def("run", [](vision::ocr::ClassifierPostprocessor& self,
+                    &vision::ocr::ClassifierPostprocessor::GetClsThresh,
+                    &vision::ocr::ClassifierPostprocessor::SetClsThresh)
+      .def("run",
+           [](vision::ocr::ClassifierPostprocessor& self,
               std::vector<FDTensor>& inputs) {
              std::vector<int> cls_labels;
              std::vector<float> cls_scores;
              if (!self.Run(inputs, &cls_labels, &cls_scores)) {
-          throw std::runtime_error("Failed to preprocess the input data in ClassifierPostprocessor.");
+               throw std::runtime_error(
+                   "Failed to preprocess the input data in "
+                   "ClassifierPostprocessor.");
              }
              return std::make_pair(cls_labels, cls_scores);
            })
@@ -136,7 +177,9 @@ void BindPPOCRModel(pybind11::module& m) {
         std::vector<int> cls_labels;
         std::vector<float> cls_scores;
         if (!self.Run(inputs, &cls_labels, &cls_scores)) {
-          throw std::runtime_error("Failed to preprocess the input data in ClassifierPostprocessor.");
+          throw std::runtime_error(
+              "Failed to preprocess the input data in "
+              "ClassifierPostprocessor.");
         }
         return std::make_pair(cls_labels, cls_scores);
       });
@@ -145,17 +188,20 @@ void BindPPOCRModel(pybind11::module& m) {
       .def(pybind11::init<std::string, std::string, RuntimeOption,
                           ModelFormat>())
       .def(pybind11::init<>())
-      .def_property_readonly("preprocessor", &vision::ocr::Classifier::GetPreprocessor)
+      .def_property_readonly("preprocessor",
-      .def_property_readonly("postprocessor", &vision::ocr::Classifier::GetPostprocessor)
+                             &vision::ocr::Classifier::GetPreprocessor)
-      .def("predict", [](vision::ocr::Classifier& self,
+      .def_property_readonly("postprocessor",
-                         pybind11::array& data) {
+                             &vision::ocr::Classifier::GetPostprocessor)
+      .def("predict",
+           [](vision::ocr::Classifier& self, pybind11::array& data) {
              auto mat = PyArrayToCvMat(data);
              int32_t cls_label;
              float cls_score;
              self.Predict(mat, &cls_label, &cls_score);
              return std::make_pair(cls_label, cls_score);
            })
-      .def("batch_predict", [](vision::ocr::Classifier& self, std::vector<pybind11::array>& data) {
+      .def("batch_predict", [](vision::ocr::Classifier& self,
+                               std::vector<pybind11::array>& data) {
         std::vector<cv::Mat> images;
         std::vector<int32_t> cls_labels;
         std::vector<float> cls_scores;
@@ -167,21 +213,32 @@ void BindPPOCRModel(pybind11::module& m) {
       });
 
   // Recognizer
-  pybind11::class_<vision::ocr::RecognizerPreprocessor>(m, "RecognizerPreprocessor")
+  pybind11::class_<vision::ocr::RecognizerPreprocessor>(
+      m, "RecognizerPreprocessor")
       .def(pybind11::init<>())
-    .def_property("static_shape_infer", &vision::ocr::RecognizerPreprocessor::GetStaticShapeInfer, &vision::ocr::RecognizerPreprocessor::SetStaticShapeInfer) 
+      .def_property("static_shape_infer",
-    .def_property("rec_image_shape", &vision::ocr::RecognizerPreprocessor::GetRecImageShape, &vision::ocr::RecognizerPreprocessor::SetRecImageShape)
+                    &vision::ocr::RecognizerPreprocessor::GetStaticShapeInfer,
-    .def_property("mean", &vision::ocr::RecognizerPreprocessor::GetMean, &vision::ocr::RecognizerPreprocessor::SetMean)
+                    &vision::ocr::RecognizerPreprocessor::SetStaticShapeInfer)
-    .def_property("scale", &vision::ocr::RecognizerPreprocessor::GetScale, &vision::ocr::RecognizerPreprocessor::SetScale)
+      .def_property("rec_image_shape",
-    .def_property("is_scale", &vision::ocr::RecognizerPreprocessor::GetIsScale, &vision::ocr::RecognizerPreprocessor::SetIsScale)
+                    &vision::ocr::RecognizerPreprocessor::GetRecImageShape,
-    .def("run", [](vision::ocr::RecognizerPreprocessor& self, std::vector<pybind11::array>& im_list) {
+                    &vision::ocr::RecognizerPreprocessor::SetRecImageShape)
+      .def_property("mean", &vision::ocr::RecognizerPreprocessor::GetMean,
+                    &vision::ocr::RecognizerPreprocessor::SetMean)
+      .def_property("scale", &vision::ocr::RecognizerPreprocessor::GetScale,
+                    &vision::ocr::RecognizerPreprocessor::SetScale)
+      .def_property("is_scale",
+                    &vision::ocr::RecognizerPreprocessor::GetIsScale,
+                    &vision::ocr::RecognizerPreprocessor::SetIsScale)
+      .def("run", [](vision::ocr::RecognizerPreprocessor& self,
+                     std::vector<pybind11::array>& im_list) {
         std::vector<vision::FDMat> images;
         for (size_t i = 0; i < im_list.size(); ++i) {
           images.push_back(vision::WrapMat(PyArrayToCvMat(im_list[i])));
         }
         std::vector<FDTensor> outputs;
         if (!self.Run(&images, &outputs)) {
-        throw std::runtime_error("Failed to preprocess the input data in RecognizerPreprocessor.");
+          throw std::runtime_error(
+              "Failed to preprocess the input data in RecognizerPreprocessor.");
         }
         for (size_t i = 0; i < outputs.size(); ++i) {
           outputs[i].StopSharing();
@@ -189,14 +246,18 @@ void BindPPOCRModel(pybind11::module& m) {
         return outputs;
       });
 
-  pybind11::class_<vision::ocr::RecognizerPostprocessor>(m, "RecognizerPostprocessor")
+  pybind11::class_<vision::ocr::RecognizerPostprocessor>(
+      m, "RecognizerPostprocessor")
       .def(pybind11::init<std::string>())
-      .def("run", [](vision::ocr::RecognizerPostprocessor& self,
+      .def("run",
+           [](vision::ocr::RecognizerPostprocessor& self,
               std::vector<FDTensor>& inputs) {
              std::vector<std::string> texts;
              std::vector<float> rec_scores;
              if (!self.Run(inputs, &texts, &rec_scores)) {
-          throw std::runtime_error("Failed to preprocess the input data in RecognizerPostprocessor.");
+               throw std::runtime_error(
+                   "Failed to preprocess the input data in "
+                   "RecognizerPostprocessor.");
              }
              return std::make_pair(texts, rec_scores);
            })
@@ -207,7 +268,9 @@ void BindPPOCRModel(pybind11::module& m) {
         std::vector<std::string> texts;
         std::vector<float> rec_scores;
         if (!self.Run(inputs, &texts, &rec_scores)) {
-          throw std::runtime_error("Failed to preprocess the input data in RecognizerPostprocessor.");
+          throw std::runtime_error(
+              "Failed to preprocess the input data in "
+              "RecognizerPostprocessor.");
         }
         return std::make_pair(texts, rec_scores);
       });
@@ -216,17 +279,20 @@ void BindPPOCRModel(pybind11::module& m) {
       .def(pybind11::init<std::string, std::string, std::string, RuntimeOption,
                           ModelFormat>())
       .def(pybind11::init<>())
-      .def_property_readonly("preprocessor", &vision::ocr::Recognizer::GetPreprocessor)
+      .def_property_readonly("preprocessor",
-      .def_property_readonly("postprocessor", &vision::ocr::Recognizer::GetPostprocessor)
+                             &vision::ocr::Recognizer::GetPreprocessor)
-      .def("predict", [](vision::ocr::Recognizer& self,
+      .def_property_readonly("postprocessor",
-                         pybind11::array& data) {
+                             &vision::ocr::Recognizer::GetPostprocessor)
+      .def("predict",
+           [](vision::ocr::Recognizer& self, pybind11::array& data) {
              auto mat = PyArrayToCvMat(data);
              std::string text;
              float rec_score;
              self.Predict(mat, &text, &rec_score);
              return std::make_pair(text, rec_score);
            })
-      .def("batch_predict", [](vision::ocr::Recognizer& self, std::vector<pybind11::array>& data) {
+      .def("batch_predict", [](vision::ocr::Recognizer& self,
+                               std::vector<pybind11::array>& data) {
         std::vector<cv::Mat> images;
         std::vector<std::string> texts;
         std::vector<float> rec_scores;

python/fastdeploy/vision/classification/ppcls/__init__.py

@@ -46,7 +46,6 @@ class PaddleClasPreprocessor(ProcessorManager):
         When the initial operator is Resize, and input image size is large,
         maybe it's better to run resize on CPU, because the HostToDevice memcpy
         is time consuming. Set this True to run the initial resize on CPU.
-
         :param: v: True or False
         """
         self._manager.initial_resize_on_cpu(v)

python/fastdeploy/vision/ocr/ppocr/__init__.py

@@ -37,43 +37,31 @@ class DBDetectorPreprocessor:
 
     @property
     def max_side_len(self):
+        """Get max_side_len value.
+        """
         return self._preprocessor.max_side_len
 
     @max_side_len.setter
     def max_side_len(self, value):
+        """Set max_side_len value.
+        :param: value: (int) max_side_len value
+        """
         assert isinstance(
             value, int), "The value to set `max_side_len` must be type of int."
         self._preprocessor.max_side_len = value
 
-    @property
+    def set_normalize(self,
-    def is_scale(self):
+                      mean=[0.485, 0.456, 0.406],
-        return self._preprocessor.is_scale
+                      std=[0.229, 0.224, 0.225],
-
+                      is_scale=True):
-    @is_scale.setter
+        """Set preprocess normalize parameters, please call this API to
-    def is_scale(self, value):
+           customize the normalize parameters, otherwise it will use the default
-        assert isinstance(
+           normalize parameters.
-            value, bool), "The value to set `is_scale` must be type of bool."
+        :param: mean: (list of float) mean values
-        self._preprocessor.is_scale = value
+        :param: std: (list of float) std values
-
+        :param: is_scale: (boolean) whether to scale
-    @property
+        """
-    def scale(self):
+        self._preprocessor.set_normalize(mean, std, is_scale)
-        return self._preprocessor.scale
-
-    @scale.setter
-    def scale(self, value):
-        assert isinstance(
-            value, list), "The value to set `scale` must be type of list."
-        self._preprocessor.scale = value
-
-    @property
-    def mean(self):
-        return self._preprocessor.mean
-
-    @mean.setter
-    def mean(self, value):
-        assert isinstance(
-            value, list), "The value to set `mean` must be type of list."
-        self._preprocessor.mean = value
 
 
 class DBDetectorPostprocessor:
@@ -174,6 +162,7 @@ class DBDetector(FastDeployModel):
         """Clone OCR detection model object
         :return: a new OCR detection model object
         """
+
         class DBDetectorClone(DBDetector):
             def __init__(self, model):
                 self._model = model
@@ -203,18 +192,10 @@ class DBDetector(FastDeployModel):
     def preprocessor(self):
         return self._model.preprocessor
 
-    @preprocessor.setter
-    def preprocessor(self, value):
-        self._model.preprocessor = value
-
     @property
     def postprocessor(self):
         return self._model.postprocessor
 
-    @postprocessor.setter
-    def postprocessor(self, value):
-        self._model.postprocessor = value
-
     # Det Preprocessor Property
     @property
     def max_side_len(self):
@@ -226,36 +207,6 @@ class DBDetector(FastDeployModel):
             value, int), "The value to set `max_side_len` must be type of int."
         self._model.preprocessor.max_side_len = value
 
-    @property
-    def is_scale(self):
-        return self._model.preprocessor.is_scale
-
-    @is_scale.setter
-    def is_scale(self, value):
-        assert isinstance(
-            value, bool), "The value to set `is_scale` must be type of bool."
-        self._model.preprocessor.is_scale = value
-
-    @property
-    def scale(self):
-        return self._model.preprocessor.scale
-
-    @scale.setter
-    def scale(self, value):
-        assert isinstance(
-            value, list), "The value to set `scale` must be type of list."
-        self._model.preprocessor.scale = value
-
-    @property
-    def mean(self):
-        return self._model.preprocessor.mean
-
-    @mean.setter
-    def mean(self, value):
-        assert isinstance(
-            value, list), "The value to set `mean` must be type of list."
-        self._model.preprocessor.mean = value
-
     # Det Ppstprocessor Property
     @property
     def det_db_thresh(self):
@@ -421,6 +372,7 @@ class Classifier(FastDeployModel):
         """Clone OCR classification model object
         :return: a new OCR classification model object
         """
+
         class ClassifierClone(Classifier):
             def __init__(self, model):
                 self._model = model
@@ -629,6 +581,7 @@ class Recognizer(FastDeployModel):
         """Clone OCR recognition model object
         :return: a new OCR recognition model object
         """
+
         class RecognizerClone(Recognizer):
             def __init__(self, model):
                 self._model = model
@@ -743,6 +696,7 @@ class PPOCRv3(FastDeployModel):
         """Clone PPOCRv3 pipeline object
         :return: a new PPOCRv3 pipeline object
         """
+
         class PPOCRv3Clone(PPOCRv3):
             def __init__(self, system):
                 self.system_ = system
@@ -818,6 +772,7 @@ class PPOCRv2(FastDeployModel):
         """Clone PPOCRv3 pipeline object
         :return: a new PPOCRv3 pipeline object
         """
+
         class PPOCRv2Clone(PPOCRv2):
             def __init__(self, system):
                 self.system_ = system