On the basis of model JPEG in Discrete Cosine Transform (DCT), the present paper presnets, inner-block rearrangement and resampling, by which image scaling and transforming can be realized.

• 摘要在离散馀弦变换(DCT)压缩域中，从JPEG模型出发，提出块内重排／重取样法，实现图像的缩放和平移。