Method and apparatus for scaling image data having associated transparency data

摘要

The resolution of one or more components of image data is changed to generate scaled image data and transparency processing is applied to the scaled image data, wherein the transparency processing is taken into account during the changing of the resolution of the image data. In a preferred embodiment in which a video codec applies transparency processing during the compression of subsampled video data, the capture processor applies the same transparency mask during data subsampling to decrease color-bleeding effects that may otherwise appear in the decoded video stream.