Video coder providing implicit coefficient prediction for image coding and intra coding of video

摘要

A method of encoding video signals, comprises the steps of: formatting the video signals into a plurality of vertically adjacent and horizontally adjacent blocks of image data, and for each block of new image data: determining a horizontal gradient between a first block of image data vertically adjacent to the block of new image data and a second block of image data horizontally adjacent to the first block, determining a vertical gradient between a third block of image data horizontally adjacent to the block of new image data and the second block of image data, predicting image data for the block of new image data based on the horizontal and vertical gradients, and generating residual image data for the block of new image data from the predicted image data and the new image data.