imutils.py 文件源码

def _shift_interp(array, shift_value, mode='constant', cval=0):
    # Manual alternative to built-in function: slightly slower
    Ndim  = array.ndim
    dims  = array.shape
    dtype = array.dtype.kind

    if (Ndim == 1):
        pass
    elif (Ndim == 2):
        x, y = np.meshgrid(np.arange(dims[1], dtype=dtype), np.arange(dims[0], dtype=dtype))

        x -= shift_value[0]
        y -= shift_value[1]

        shifted = ndimage.map_coordinates(img, [y, x], mode=mode, cval=cval)

    return shifted