c++ OpenCV memory management -


i'm trying build program recognises objects through template matching. whenever select roi program memory starts gain 2-3 mbs per second , after 20-30 minutes program crashes because uses memory.

i think problem starts somewhere in code below have no idea where, , how somehow free memory without corrupting program.

could give me lead on how fix problem?

void testapp::update() {  vidgrabber.grabframe();         if (vidgrabber.isframenew())         {         colorimg.setfrompixels(vidgrabber.getpixels(), camwidth,camheight);         if(subjectisdefined)             {                            iplimage *result = cvcreateimage(cvsize(camwidth - subjectimg.width + 1, camheight - subjectimg.height + 1), 32, 1);                 cvmatchtemplate(colorimg.getcvimage(), subjectimg.getcvimage(), result, cv_tm_sqdiff);                 double minval, maxval;                 cvpoint minloc, maxloc;                 cvminmaxloc(result, &minval, &maxval, &minloc, &maxloc, 0);                 subjectlocation.x = minloc.x;                 subjectlocation.y = minloc.y;             }     } }    void testapp::mousereleased(int x, int y, int button) { //end tracking , normalize subject frame if(subjectframe.width < 0) {     subjectframe.x += subjectframe.width;     subjectframe.width *= -1; }  if(subjectframe.height < 0) {     subjectframe.y += subjectframe.height;     subjectframe.height *= -1; } isselectingtrackingregion = false; subjectlocation.x = subjectframe.x; subjectlocation.y = subjectframe.y;   //copy selected portion of image subject image; subjectimg.allocate(subjectframe.width, subjectframe.height);    colorimg.setroi(subjectframe); subjectimg = colorimg; colorimg.resetroi(); subjectisdefined = true; }

you have use cvreleaseimage() image iplmage have created in program. have careful find correct place write cvreleaseimage(image name) because once release memory related image, can not access image again.

suggestion: don't use iplimage. that's old c api of opencv. days, can use mat images can manage memory themself. advantage of using mat don't need think freeing memory.


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