Comments on: HSV.cpp – hands detection demonstration

By: Andol

Andol — Tue, 27 Jul 2010 15:00:31 +0000

http://www.andol.info/research/1601.htm

By: champie

champie — Tue, 27 Jul 2010 12:52:31 +0000

Hi im newbie in OpenCv/image processing, i have a code here using visual c++ and opencv, i need to display the video in a new form in mfc. can anyone please guide me what to do first?. thank you and godbless.

By: Andol

Andol — Sat, 17 Jul 2010 12:17:33 +0000

try “cvCaptureFromFile()”

By: priyanka

priyanka — Sat, 17 Jul 2010 11:01:53 +0000

here is display video program:

//———————————————— To display to a video in a Window————————————————-//
#include
#include “cv.h”
#include “highgui.h”
int main(){
const char* file=”H:\\seq3.avi”;
cvNamedWindow(“w”,1);
// CvCapture* capture=cvCaptureFromAVI(“video.avi”);
CvCapture* capture=cvCreateFileCapture(file);
IplImage* frame=0;
while(1)
{
frame=cvQueryFrame(capture);

/*
// either use
frame=cvQueryFrame(capture);
// or
int i=cvGrabFrame(capture);
printf(“cvGrabFrame value is %d \n”,i);
frame=cvRetrieveFrame(capture );
*/

if(!frame)
{
printf(“no input \n”);
break;
}
cvShowImage(“w”,frame);
char c=cvWaitKey(33);
if(c==27) break;
}
cvReleaseCapture( &capture );
cvDestroyWindow(“w”);
system(“pause”);
return 0;
}

By: priyanka

priyanka — Sat, 17 Jul 2010 10:59:21 +0000

plz sir refer to this link
http://atmaja.tk/
here video 2 run succesfully from opencv display video program but video 1 does not.

By: Andol

Andol — Tue, 09 Mar 2010 09:26:31 +0000

no sure hsv format images have to be used, but using hsv image is relatively easier to identify color ranges. hope this helps.

By: Ayush

Ayush — Tue, 09 Mar 2010 06:00:05 +0000

Hi, why are you using BGR values in hsv_min & hsv_max??

CvScalar hsv_min = cvScalar(0, 30, 80, 0);
CvScalar hsv_max = cvScalar(20, 150, 255, 0);

moreover, whats the need to convert the image from BGR to HSV ?

By: quarks

quarks — Thu, 21 Jan 2010 08:51:53 +0000

hi
i would like to detect the gesture of the hand such as (you shown above) during motion to trigger some other input such as (to open a folder).
i had exceuted your code but i dont know, how to make to detect my gesture and to trigger some other actions (to open folder)
my email id is:infoquarks@gmail.com

By: Zoran

Zoran — Tue, 28 Jul 2009 22:53:05 +0000

I have already seen it somethere…
Zoran