An image processing circuit includes a processor that receives an encoded portion
of a first version of an image. The processor decodes this encoded portion directly
into a decoded portion of a second version of the image, the second version having
a resolution that is different than the resolution of the first version. Therefore,
such an image processing circuit can decode an encoded hi-res version of an image
directly into a decoded lo-res version of the image. Alternatively, the image processing
circuit includes a processor that modifies a motion vector associated with a portion
of a first version of a first image. The processor then identifies a portion of
a second image to which the modified motion vector points, the second image having
a different resolution than the first version of the first image. Next, the processor
generates a portion of a second version of the first image from the identified
portion of the second image, the second version of the first image having the same
resolution as the second image.