page.py 文件源码

def find_components(im, max_components=16):
    """Dilate the image until there are just a few connected components.
    Returns contours for these components."""
    kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (10, 10))
    dilation = dilate(im, kernel, 6)

    count = 21
    n = 0
    sigma = 0.000

    while count > max_components:
        n += 1
        sigma += 0.005
        result = cv2.findContours(dilation, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
        if len(result) == 3:
            _, contours, hierarchy = result
        elif len(result) == 2:
            contours, hierarchy = result
        possible = find_likely_rectangles(contours, sigma)
        count = len(possible)

    return (dilation, possible, n)