kcftracker.py 文件源码

def subwindow(img, window, borderType=cv2.BORDER_CONSTANT):
    cutWindow = [x for x in window]
    limit(cutWindow, [0, 0, img.shape[1], img.shape[0]])  # modify cutWindow
    assert(cutWindow[2] > 0 and cutWindow[3] > 0)
    border = getBorder(window, cutWindow)
    res = img[cutWindow[1]:cutWindow[1] + cutWindow[3], cutWindow[0]:cutWindow[0] + cutWindow[2]]

    if(border != [0, 0, 0, 0]):
        res = cv2.copyMakeBorder(res, border[1], border[3], border[0], border[2], borderType)
    return res


# KCF tracker