imutils.py 文件源码

def _scale_interp(array, scale_value, center, mode='constant', cval=0):
    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))

        nx = (x - center[0]) / scale_value[0] + center[0]
        ny = (y - center[1]) / scale_value[1] + center[1]

        scaled = ndimage.map_coordinates(array, [ny, nx], mode=mode, cval=cval)

    return scaled