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Fixed performance bugs related to character position lookup

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This commit is contained in:
Matt Hill
2015-07-02 15:42:25 -04:00
parent 4114f325a0
commit 6e514b6f42
2 changed files with 18 additions and 18 deletions
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33
src/openalpr/alpr_impl.cpp
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@@ -195,6 +195,7 @@ namespace alpr
int bestPlateIndex = 0;
cv::Mat charTransformMatrix = getCharacterTransformMatrix(&pipeline_data);
for (unsigned int pp = 0; pp < ppResults.size(); pp++)
{
@@ -216,7 +217,7 @@ namespace alpr
character_details.character = ppResults[pp].letter_details[c_idx].letter;
character_details.confidence = ppResults[pp].letter_details[c_idx].totalscore;
cv::Rect char_rect = pipeline_data.charRegions[ppResults[pp].letter_details[c_idx].charposition];
std::vector<AlprCoordinate> charpoints = getCharacterPoints(char_rect, &pipeline_data );
std::vector<AlprCoordinate> charpoints = getCharacterPoints(char_rect, charTransformMatrix );
for (int cpt = 0; cpt < 4; cpt++)
character_details.corners[cpt] = charpoints[cpt];
aplate.character_details.push_back(character_details);
@@ -585,22 +586,7 @@ namespace alpr
return ss.str();
}
std::vector<AlprCoordinate> AlprImpl::getCharacterPoints(cv::Rect char_rect, PipelineData* pipeline_data ) {
std::vector<Point2f> points;
points.push_back(Point2f(char_rect.x, char_rect.y));
points.push_back(Point2f(char_rect.x + char_rect.width, char_rect.y));
points.push_back(Point2f(char_rect.x + char_rect.width, char_rect.y + char_rect.height));
points.push_back(Point2f(char_rect.x, char_rect.y + char_rect.height));
Mat img = pipeline_data->colorImg;
Mat debugImg(img.size(), img.type());
img.copyTo(debugImg);
cv::Mat AlprImpl::getCharacterTransformMatrix(PipelineData* pipeline_data ) {
std::vector<Point2f> crop_corners;
crop_corners.push_back(Point2f(0,0));
crop_corners.push_back(Point2f(pipeline_data->crop_gray.cols,0));
@@ -609,6 +595,19 @@ namespace alpr
// Transform the points from the cropped region (skew corrected license plate region) back to the original image
cv::Mat transmtx = cv::getPerspectiveTransform(crop_corners, pipeline_data->plate_corners);
return transmtx;
}
std::vector<AlprCoordinate> AlprImpl::getCharacterPoints(cv::Rect char_rect, cv::Mat transmtx ) {
std::vector<Point2f> points;
points.push_back(Point2f(char_rect.x, char_rect.y));
points.push_back(Point2f(char_rect.x + char_rect.width, char_rect.y));
points.push_back(Point2f(char_rect.x + char_rect.width, char_rect.y + char_rect.height));
points.push_back(Point2f(char_rect.x, char_rect.y + char_rect.height));
cv::perspectiveTransform(points, points, transmtx);
// If using prewarp, remap the points to the original image

3
src/openalpr/alpr_impl.h
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@@ -107,7 +107,8 @@ namespace alpr
bool detectRegion;
std::string defaultRegion;
std::vector<AlprCoordinate> getCharacterPoints(cv::Rect char_rect, PipelineData* pipeline_data);
cv::Mat getCharacterTransformMatrix(PipelineData* pipeline_data );
std::vector<AlprCoordinate> getCharacterPoints(cv::Rect char_rect, cv::Mat transmtx);
std::vector<cv::Rect> convertRects(std::vector<AlprRegionOfInterest> regionsOfInterest);
};