vision.py 文件源码

def col_profile(num_cols, height):
    profile = np.zeros(num_cols)
    peak_width = int(math.ceil(num_cols * 0.125))

    # average number of pixels should be height
    for i in range(0, peak_width):
        profile[i] = height
    # average number of pixels should be 10% of height
    for i in range(peak_width, num_cols - peak_width):
        profile[i] = height * .1
    # average number of pixels should be height
    for i in range(num_cols - peak_width, num_cols):
        profile[i] = height

    # normalize to between 0 and 1
    profile *= 1.0 / profile.max()
    return profile