CalcOpticalFlowFarneback error with C, Eclipse
I'm trying to compare two images this is my code:
include <stdio.h>
include <cv.h>
include <highgui.h>
int main(){
CvCapture* webcam = cvCreateCameraCapture(0); IplImageprev=NULL; IplImagenext=NULL;
double pyr_scale=0.5; int levels=1; int winsize=3; int iterations=10; int poly_n=5; double poly_sigma=1.1; int flags=0;
if (!webcam){ puts("error!"); return -1; }
while (1) {
prev = cvQueryFrame(webcam); next = cvQueryFrame(webcam);
CvSize isize = cvSize(80,80); IplImage *flow = cvCreateImage(isize, IPL_DEPTH_32F, 1); if ((prev) && (next)) {
cvCalcOpticalFlowFarneback(prev,next,flow,pyr_scale,levels,winsize,iterations,poly_n,poly_sigma,flags);
}
}
return 0; }
but I get this error:
OpenCV Error: Assertion failed (flow.size() == prev.size() && flow.type() == CV_32FC2) in unknown function, file ........\ocv\opencv\src\cv\cvoptflowgf.cpp, line 656
where am I doing wrong?
the flow image must have the same size as the prev/next image
btw, if
#include "highgui.h"works for you, you must be using a version from the stone age.well, how do I set them to the same size? thanks again
cvSize(next); probably.
again, why even bother with opencv1.0 ? (and the c-api in general)
I'm using opencv2.1, I don't know why but for now I need opencv only for a exercise:)