CvtColor Error at higher resolutions
Question: I have a Logitech Pro 9000 webcam and right now I try to learn OpenCV. I use
OpenCV 2.4.5 together with Python 2.7. I'm having problems with the CvtColor
function at higher resolutions. The following script is working in 640x480,
but not with higher resolutions (800X600 and up).

    
    
    import cv
    
    cv.NamedWindow("Video", cv.CV_WINDOW_AUTOSIZE)
    
    camera_index = 1
    capture = cv.CaptureFromCAM(camera_index)
    cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_WIDTH,1200)
    cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_HEIGHT,800)
    
    grey_frame = cv.CreateImage((1200,800),8,1)
    
    while True:
        input_frame = cv.QueryFrame(capture)
        cv.CvtColor(input_frame,grey_frame,cv.CV_BGR2GRAY)
        cv.WaitKey(5)
        cv.ShowImage("Video", grey_frame)
    

I get the following error

    
    
    cv2.error: dst.data == dst0.data
    

EDIT: SOLVED After saving the captured input_frame. I noticed that the
resolution of the saved image is not matching my set values. I set 1200x800 as
capture properties and got a 1280x800 image. After using this resolution,
everything worked fine.


Answer: After saving the captured input_frame. I noticed that the resolution of the
saved image is not matching my set values. I set 1200x800 as capture
properties and got a 1280x800 image. After using this resolution, everything
worked fine.

