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Made OpenCL GPU detector threadsafe

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Matt Hill
2015-09-14 20:36:29 -04:00
parent ec24d1d147
commit 5889ec6109
1 changed files with 39 additions and 15 deletions
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54
src/openalpr/detection/detectorocl.cpp
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@@ -18,23 +18,26 @@
*/
#include "detectorocl.h"
#include <support/tinythread.h>
#if OPENCV_MAJOR_VERSION == 3
using namespace cv;
using namespace std;
tthread::mutex ocl_detector_mutex_m;
namespace alpr
{
DetectorOCL::DetectorOCL(Config* config) : Detector(config) {
tthread::lock_guard<tthread::mutex> guard(ocl_detector_mutex_m);
cv::ocl::setUseOpenCL(true);
if (!ocl::haveOpenCL())
{
this->loaded = false;
@@ -91,34 +94,55 @@ namespace alpr
vector<PlateRegion> DetectorOCL::doCascade(Mat orig_frame, int offset_x, int offset_y)
{
int w = orig_frame.size().width;
int h = orig_frame.size().height;
float scale_factor = computeScaleFactor(w, h);
UMat openclFrame;
orig_frame.copyTo(openclFrame);
vector<Rect> plates;
equalizeHist( openclFrame, openclFrame );
if (scale_factor != 1.0)
resize(openclFrame, openclFrame, Size(w * scale_factor, h * scale_factor));
//-- Detect plates
timespec startTime;
getTimeMonotonic(&startTime);
float maxWidth = ((float) w) * (config->maxPlateWidthPercent / 100.0f) * scale_factor;
float maxHeight = ((float) h) * (config->maxPlateHeightPercent / 100.0f) * scale_factor;
Size minSize(config->minPlateSizeWidthPx * scale_factor, config->minPlateSizeHeightPx * scale_factor);
Size maxSize(maxWidth, maxHeight);
plate_cascade.detectMultiScale( openclFrame, plates, config->detection_iteration_increase, config->detectionStrictness,
0,
//0|CV_HAAR_SCALE_IMAGE,
minSize, maxSize );
// If we have an OpenCL core available, use it. Otherwise use CPU
if (ocl_detector_mutex_m.try_lock())
{
UMat openclFrame;
orig_frame.copyTo(openclFrame);
equalizeHist( openclFrame, openclFrame );
if (scale_factor != 1.0)
resize(openclFrame, openclFrame, Size(w * scale_factor, h * scale_factor));
plate_cascade.detectMultiScale( openclFrame, plates, config->detection_iteration_increase, config->detectionStrictness,
0,
minSize, maxSize );
ocl_detector_mutex_m.unlock();
}
else
{
equalizeHist( orig_frame, orig_frame );
if (scale_factor != 1.0)
resize(orig_frame, orig_frame, Size(w * scale_factor, h * scale_factor));
plate_cascade.detectMultiScale( orig_frame, plates, config->detection_iteration_increase, config->detectionStrictness,
0,
minSize, maxSize );
}
if (config->debugTiming)