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rnc: added a method in FeatureDetector to cropp an image

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This commit is contained in:
gdd 2011-11-23 14:51:23 +00:00
parent 71d480a550
commit c7fa115a6f
2 changed files with 50 additions and 12 deletions
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50
src/ShapeRecognition/ShapeRec_FeatureDetector.cxx
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@ -38,16 +38,30 @@ using namespace cv;
Constructor
\param theFilename - image to process
*/
ShapeRec_FeatureDetector::ShapeRec_FeatureDetector(const std::string& theFilename):
ShapeRec_FeatureDetector::ShapeRec_FeatureDetector():
corners()
{
cornerCount = 2000;
rect=cvRect(0,0,0,0);
imagePath = theFilename;
imagePath = ""; //theFilename;
// Store the dimensions of the picture
IplImage* bg_img = cvLoadImage (imagePath.c_str(), CV_LOAD_IMAGE_GRAYSCALE);
imgHeight = bg_img->height;
imgWidth = bg_img->width;
imgHeight = 0;
imgWidth = 0;
}
/*!
Sets the path of the image file to be proccesed
\param thePath - Location of the image file
*/
void ShapeRec_FeatureDetector::SetPath( const std::string& thePath )
{
imagePath = thePath;
if (imagePath != "")
{
IplImage* src = cvLoadImage(imagePath.c_str(),CV_LOAD_IMAGE_COLOR);
imgHeight = src->height;
imgWidth = src->width;
}
}
/*!
@ -167,6 +181,28 @@ void ShapeRec_FeatureDetector::SetROI( const QRect& theRect )
}
}
/*!
Crops the image located at imagePath to the region of interest given by the user via SetROI
and stores the result in /tmp
\param theRect - Region Of Interest of the image located at imagePath
*/
std::string ShapeRec_FeatureDetector::CroppImage()
{
IplImage* src = cvLoadImage(imagePath.c_str(),CV_LOAD_IMAGE_COLOR);
cvSetImageROI(src, rect);
IplImage* cropped_image = cvCreateImage(cvGetSize(src),
src->depth,
src->nChannels);
cvCopy(src, cropped_image, NULL);
cvResetImageROI(src);
cvSaveImage ("/tmp/cropped_image.bmp", cropped_image);
return "/tmp/cropped_image.bmp";
}
/*!
Performs contours detection and store them in contours
\param src - src image to find contours of
@ -198,8 +234,8 @@ Mat ShapeRec_FeatureDetector::_colorFiltering()
// Crop the image to build an histogram from the selected part
cvSetImageROI(find_image, rect);
IplImage* test_image = cvCreateImage(cvGetSize(find_image),
find_image->depth,
find_image->nChannels);
find_image->depth,
find_image->nChannels);
cvCopy(find_image, test_image, NULL);
cvResetImageROI(find_image);

12
src/ShapeRecognition/ShapeRec_FeatureDetector.hxx
View File

@ -45,12 +45,9 @@ public:
typedef std::vector<cv::Point> CvContour;
typedef std::vector<std::vector<cv::Point> > CvContoursArray;
ShapeRec_FeatureDetector( const std::string& ); // Constructor
void ComputeCorners(); // Detects the corners from the image located at imagePath
bool ComputeLines(); // Detects the lines from the image located at imagePath
bool ComputeContours( int method ); // Detects the contours from the image located at imagePath
ShapeRec_FeatureDetector(); // Constructor
void SetPath( const std::string& ); // Sets the image path
void SetROI( const QRect& ); // Sets a Region Of Interest in the image
CvPoint2D32f* GetCorners() { return corners; };
CvContoursArray GetContours() { return contours; };
@ -60,6 +57,11 @@ public:
int GetImgHeight() { return imgHeight; };
int GetImgWidth() { return imgWidth; };
std::string CroppImage();
void ComputeCorners(); // Detects the corners from the image located at imagePath
bool ComputeLines(); // Detects the lines from the image located at imagePath
bool ComputeContours( int method ); // Detects the contours from the image located at imagePath
private:
std::string imagePath;