Propagation map

摘要

A method comprises receiving original encoded video stream as one input, accessing encoded data divided into slices which are further divided into blocks, receiving the list of possible changes or watermarks as another input, accessing at least one block, decoding each slice, setting down each slice, extracting from the list those changes that apply to the at least one block, and constructing propagation maps from inter-prediction or intra-prediction using changes for the at least one block. The method can further comprise decoding luminance data using the propagation maps, comparing the luminance data to a fidelity threshold, and applying possible changes or watermarks to those not exceeding the fidelity threshold.

主权项

1. A method of video watermarking based on
propagation maps performed by an apparatus comprising: accessing a list of video watermarks to encoded video data said encoded video data being divided into slices and blocks; constructing propagation maps of at least one of the video watermarks, wherein a propagation map is a map that represents how a change associated with a video watermark will propagate to other blocks in a frame or picture; and applying one of the video watermarks based on the propagation maps.