Revision history [back]

Hi; In my project, i can extract Roi's from labelled image but i didn't know how to save them for a later use .i work with cvBlob to extract blobs . here is the procedure witch extract roi but it shows only the last Roi and not all of them.Can you help me please? void extraireROI(IplImage* img,CvBlob blob) { int heigth =(blob->maxy)- (blob->miny); int width=(blob->maxx)- (blob->minx); int x=blob->minx; int y=blob->miny; cvSetImageROI(img,cvRect(x, y, width, heigth)); IplImage img2=cvCreateImage(cvGetSize(img),img->depth, 3); cvCopy(img, img2, NULL);

/* always reset the Region of Interest */
cvResetImageROI(img);
cvShowImage("ROI extraite ",img2);
}

void labelImage(IplImage *binaire,IplImage *img ) {

// Label image and extract informations

IplImage labelImg=cvCreateImage(cvGetSize(binaire), IPL_DEPTH_LABEL, 1); CvBlobs blobs; IplImage *roi; unsigned int result=cvLabel(binaire, labelImg, blobs); FilterArea(blobs, 500, 250000); cvRenderBlobs(labelImg, blobs, img, img); CvBlobs::iterator it=blobs.begin(); while(it!=blobs.end()) { CvBlob *blob=(it).second; extraireROI(img,blob); cout << "Blob #" << it->second->label << ": Area=" << it->second->area << ", Centroid=(" << it->second->centroid.x << ", " << it->second->centroid.y << ")" << endl; it++;
} cvShowImage("image labellisée ",img); }

Hi; In my project, i can extract Roi's from labelled image but i didn't know how to save them for a later use .i work with cvBlob to extract blobs . here is the procedure witch extract roi but it shows only the last Roi and not all of them.Can you help me please? please?

void extraireROI(IplImage* img,CvBlob blob)
*blob)
    {
    int heigth =(blob->maxy)- (blob->miny);
    int width=(blob->maxx)- (blob->minx);
    int x=blob->minx;
    int y=blob->miny;
    cvSetImageROI(img,cvRect(x, y, width, heigth));
    IplImage IplImage* img2=cvCreateImage(cvGetSize(img),img->depth, 3);
    cvCopy(img, img2, NULL);
 
NULL);

    /* always reset the Region of Interest */
 cvResetImageROI(img);
 cvShowImage("ROI extraite ",img2);
 }
 
void labelImage(IplImage *binaire,IplImage *img )
{
 
{

    // Label image and extract informations
 
informations
IplImage labelImg=cvCreateImage(cvGetSize(binaire), *labelImg=cvCreateImage(cvGetSize(binaire), IPL_DEPTH_LABEL, 1);
CvBlobs blobs;
IplImage *roi;
unsigned int result=cvLabel(binaire, labelImg, blobs);
FilterArea(blobs, 500, 250000);
cvRenderBlobs(labelImg, blobs, img, img);
CvBlobs::iterator it=blobs.begin();
while(it!=blobs.end())
{
CvBlob *blob=(it).second;
*blob=(*it).second;
 extraireROI(img,blob);
cout << "Blob #" << it->second->label << ": Area=" << it->second->area << ", Centroid=(" << it->second->centroid.x << ", " << it->second->centroid.y << ")" << endl;
it++; 
 
}
cvShowImage("image labellisée ",img);
}}

Hi; In my project, i can extract Roi's from labelled image but i didn't know how to save them for a later use .i work with cvBlob to extract blobs . here is the procedure witch extract roi but it shows only the last Roi and not all of them.Can you help me please?

void extraireROI(IplImage* img,CvBlob *blob)
    {
    int heigth =(blob->maxy)- (blob->miny);
    int width=(blob->maxx)- (blob->minx);
    int x=blob->minx;
    int y=blob->miny;
    cvSetImageROI(img,cvRect(x, y, width, heigth));
    IplImage* img2=cvCreateImage(cvGetSize(img),img->depth, 3);
    cvCopy(img, img2, NULL);

    /* always reset the Region of Interest */
    cvResetImageROI(img);
    cvShowImage("ROI extraite ",img2);
    }
void labelImage(IplImage *binaire,IplImage *img )
    {

    // Label image and extract informations 
   IplImage *labelImg=cvCreateImage(cvGetSize(binaire), IPL_DEPTH_LABEL, 1);
    CvBlobs blobs;
     IplImage *roi;
    unsigned int result=cvLabel(binaire, labelImg, blobs);
     FilterArea(blobs, 500, 250000);
    cvRenderBlobs(labelImg, blobs, img, img);
     CvBlobs::iterator it=blobs.begin();
    while(it!=blobs.end())
    {
      CvBlob *blob=(*it).second;
      extraireROI(img,blob);
      cout << "Blob #" << it->second->label << ": Area=" << it->second->area << ", Centroid=(" << it->second->centroid.x << ", " << it->second->centroid.y << ")" << endl;
      it++;  
    }
    cvShowImage("image labellisée ",img);
    }