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burnto/gist:1266515

Created October 6, 2011 04:18
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  1. burnto created this gist Oct 6, 2011.
    62 changes: 62 additions & 0 deletions gistfile1.txt
    View file
    Original file line number Diff line number Diff line change
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    #!/Users/brent/.virtualenvs/lumber/bin/python


    import cv

    cv.NamedWindow("w1", cv.CV_WINDOW_AUTOSIZE)
    camera_index = 0
    capture = cv.CaptureFromCAM(camera_index)

    gx = gy = 1
    grayscale = blur = canny = False

    def repeat():
    global capture #declare as globals since we are assigning to them now
    global camera_index
    global gx, gy, grayscale, canny, blur
    frame = cv.QueryFrame(capture)
    # import pdb; pdb.set_trace()

    if grayscale:
    gray = cv.CreateImage(cv.GetSize(frame), frame.depth, 1)
    cv.CvtColor(frame, gray, cv.CV_RGB2GRAY)
    frame = gray

    if blur:
    g = cv.CreateImage(cv.GetSize(frame), cv.IPL_DEPTH_8U, frame.channels)
    cv.Smooth(frame, g, cv.CV_GAUSSIAN, gx, gy)
    frame = g

    if grayscale and canny:
    c = cv.CreateImage(cv.GetSize(frame), frame.depth, frame.channels)
    cv.Canny(frame, c, 10, 100, 3)
    frame = c
    cv.ShowImage("w1", frame)

    c = cv.WaitKey(10)
    if c==ord('='): #in "n" key is pressed while the popup window is in focus
    gx += 2
    gy += 2
    elif c == ord('-'):
    gx = max(1, gx-2)
    gy = max(1, gy-2)
    elif c == ord('x'):
    gx += 2
    elif c == ord('X'):
    gx = max(1, gx-2)
    elif c == ord('q'):
    exit(0)

    elif c == ord('b'):
    blur = not blur
    elif c == ord('g'):
    grayscale = not grayscale
    elif c == ord('c'):
    canny = not canny




    while True:
    repeat()