Added generic OCR wrapper for Tesseract

src/misc_utilities/benchmarks/benchmark.cpp

@@ -31,6 +31,7 @@
 #include "endtoendtest.h"
 
 #include "detection/detectorfactory.h"
+#include "ocr/ocrfactory.h"
 #include "support/filesystem.h"
 
 using namespace std;
@@ -169,7 +170,7 @@ int main( int argc, const char** argv )
 
     PreWarp prewarp(&config);
     Detector* plateDetector = createDetector(&config, &prewarp);
-    OCR ocr(&config);
+    OCR* ocr = createOcr(&config);
 
     vector<double> endToEndTimes;
     vector<double> regionDetectionTimes;
@@ -230,14 +231,14 @@ int main( int argc, const char** argv )
             lpAnalysisPositiveTimes.push_back(analysisTime);
 
             getTimeMonotonic(&startTime);
-            ocr.performOCR(&pipeline_data);
+            ocr->performOCR(&pipeline_data);
             getTimeMonotonic(&endTime);
             double ocrTime = diffclock(startTime, endTime);
             cout << "\tRegion " << z << ": OCR time: " << ocrTime << "ms." << endl;
             ocrTimes.push_back(ocrTime);
 
             getTimeMonotonic(&startTime);
-            ocr.postProcessor.analyze("", 25);
+            ocr->postProcessor.analyze("", 25);
             getTimeMonotonic(&endTime);
             double postProcessTime = diffclock(startTime, endTime);
             cout << "\tRegion " << z << ": PostProcess time: " << postProcessTime << "ms." << endl;

src/misc_utilities/classifychars.cpp

@@ -28,7 +28,8 @@
 #include "licenseplatecandidate.h"
 #include "utility.h"
 #include "support/filesystem.h"
-#include "ocr.h"
+#include "ocr/ocrfactory.h"
+#include "ocr/ocr.h"
 
 using namespace std;
 using namespace cv;
@@ -120,7 +121,7 @@ int main( int argc, const char** argv )
   config.debugGeneral = false;
   config.debugCharAnalysis = false;
   config.debugCharSegmenter = false;
-  OCR ocr(&config);
+  OCR* ocr = createOcr(&config);
 
   if (DirectoryExists(inDir.c_str()))
   {
@@ -162,9 +163,9 @@ int main( int argc, const char** argv )
 
         //ocr.cleanCharRegions(charSegmenter.thresholds, charSegmenter.characters);
 
-        ocr.performOCR(&pipeline_data);
-        ocr.postProcessor.analyze(statecodestr, 25);
-        cout << "OCR results: " << ocr.postProcessor.bestChars << endl;
+        ocr->performOCR(&pipeline_data);
+        ocr->postProcessor.analyze(statecodestr, 25);
+        cout << "OCR results: " << ocr->postProcessor.bestChars << endl;
 
         vector<bool> selectedBoxes(pipeline_data.thresholds.size());
         for (int z = 0; z < pipeline_data.thresholds.size(); z++)

src/openalpr/CMakeLists.txt

@@ -15,7 +15,9 @@ set(lpr_source_files
  detection/detectormask.cpp
  licenseplatecandidate.cpp
  utility.cpp
- ocr.cpp
+ ocr/tesseract_ocr.cpp
+ ocr/ocr.cpp
+ ocr/ocrfactory.cpp
  postprocess/postprocess.cpp
  postprocess/regexrule.cpp
  binarize_wolf.cpp

src/openalpr/alpr_impl.cpp

@@ -736,7 +736,7 @@ namespace alpr
         // Country training data has not already been loaded.  Load it.
         AlprRecognizers recognizer;
         recognizer.plateDetector = createDetector(config, prewarp);
-        recognizer.ocr = new OCR(config);
+        recognizer.ocr = createOcr(config);
 
         #ifndef SKIP_STATE_DETECTION
         recognizer.stateDetector = new StateDetector(this->config->country, this->config->config_file_path, this->config->runtimeBaseDir);

src/openalpr/alpr_impl.h

@@ -37,7 +37,8 @@
 #include "licenseplatecandidate.h"
 #include "../statedetection/state_detector.h"
 #include "segmentation/charactersegmenter.h"
-#include "ocr.h"
+#include "ocr/ocr.h"
+#include "ocr/ocrfactory.h"
 
 #include "constants.h"
 

src/openalpr/ocr/ocr.cpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2015 OpenALPR Technology, Inc.
+ * Open source Automated License Plate Recognition [http://www.openalpr.com]
+ *
+ * This file is part of OpenALPR.
+ *
+ * OpenALPR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License
+ * version 3 as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "ocr.h"
+
+namespace alpr
+{
+  
+  OCR::OCR(Config* config) : postProcessor(config) {
+    this->config = config;
+  }
+
+
+  OCR::~OCR() {
+  }
+
+}

src/openalpr/ocr/ocr.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2015 OpenALPR Technology, Inc.
+ * Open source Automated License Plate Recognition [http://www.openalpr.com]
+ *
+ * This file is part of OpenALPR.
+ *
+ * OpenALPR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License
+ * version 3 as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPENALPR_OCR_H
+#define	OPENALPR_OCR_H
+
+#include "postprocess/postprocess.h"
+#include "pipeline_data.h"
+
+namespace alpr
+{
+  class OCR {
+  public:
+    OCR(Config* config);
+    virtual ~OCR();
+
+    virtual void performOCR(PipelineData* pipeline_data)=0;
+
+    PostProcess postProcessor;
+
+  protected:
+    Config* config;
+
+  };
+}
+
+#endif	/* OPENALPR_OCR_H */
+

src/openalpr/ocr/ocrfactory.cpp

@@ -0,0 +1,12 @@
+#include "ocrfactory.h"
+#include "tesseract_ocr.h"
+
+namespace alpr
+{
+  OCR* createOcr(Config* config)
+  {
+    return new TesseractOcr(config);
+  }
+
+}
+

src/openalpr/ocr/ocrfactory.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2015 OpenALPR Technology, Inc.
+ * Open source Automated License Plate Recognition [http://www.openalpr.com]
+ *
+ * This file is part of OpenALPR.
+ *
+ * OpenALPR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License
+ * version 3 as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPENALPR_OCRFACTORY_H
+#define	OPENALPR_OCRFACTORY_H
+
+#include "config.h"
+#include "ocr.h"
+
+namespace alpr
+{
+
+  OCR* createOcr(Config* config);
+
+}
+#endif	/* OPENALPR_DETECTORFACTORY_H */
+

src/openalpr/ocr/tesseract_ocr.cpp

@@ -17,7 +17,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include "ocr.h"
+#include "tesseract_ocr.h"
 
 using namespace std;
 using namespace cv;
@@ -26,12 +26,11 @@ using namespace tesseract;
 namespace alpr
 {
 
-  OCR::OCR(Config* config)
-  : postProcessor(config)
+  TesseractOcr::TesseractOcr(Config* config)
+  : OCR(config)
   {
     const string MINIMUM_TESSERACT_VERSION = "3.03";
 
-    this->config = config;
     
     if (cmpVersion(tesseract.Version(), MINIMUM_TESSERACT_VERSION.c_str()) < 0)
     {
@@ -46,12 +45,12 @@ namespace alpr
     tesseract.SetPageSegMode(PSM_SINGLE_CHAR);
   }
 
-  OCR::~OCR()
+  TesseractOcr::~TesseractOcr()
   {
     tesseract.End();
   }
 
-  void OCR::performOCR(PipelineData* pipeline_data)
+  void TesseractOcr::performOCR(PipelineData* pipeline_data)
   {
     const int SPACE_CHAR_CODE = 32;
     

src/openalpr/ocr/tesseract_ocr.h

@@ -17,14 +17,13 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef OPENALPR_OCR_H
-#define OPENALPR_OCR_H
+#ifndef OPENALPR_TESSERACTOCR_H
+#define OPENALPR_TESSERACTOCR_H
 
 #include <iostream>
 #include <stdio.h>
 
 #include "utility.h"
-#include "postprocess/postprocess.h"
 #include "config.h"
 #include "pipeline_data.h"
 
@@ -33,24 +32,23 @@
 #include "support/filesystem.h"
 #include "support/version.h"
 
+#include "ocr.h"
 #include "tesseract/baseapi.h"
 
 namespace alpr
 {
 
-  class OCR
+  class TesseractOcr : public OCR 
   {
 
     public:
-      OCR(Config* config);
-      virtual ~OCR();
+      TesseractOcr(Config* config);
+      virtual ~TesseractOcr();
 
       void performOCR(PipelineData* pipeline_data);
 
-      PostProcess postProcessor;
 
     private:
-      Config* config;
 
       tesseract::TessBaseAPI tesseract;
 
@@ -58,4 +56,4 @@ namespace alpr
 
 }
 
-#endif // OPENALPR_OCR_H
+#endif // OPENALPR_TESSERACTOCR_H