Patent ID: 9706230
Date: 2017-07-11
CPC Classifications: H04N

Claim:
1. A video handling method comprising: partitioning each image of a video signal into an array of coding tree units; partitioning the array of coding tree units of each image into a portion pattern of rectangular portions for independent encoding such that prediction dependencies of samples within a rectangular portion, of the rectangular portions, do not extend into any other rectangular portion of the rectangular portions, and such that entropy encoding parameters of one rectangular portion, of the rectangular portions, are independent of those of any other rectangular portion of the rectangular portions, the portion pattern being such that each row of coding tree units is partitioned into at least two of the rectangular portions; encoding the coding tree units within each rectangular portion using wavefront parallel processing in which, for each rectangular portion, successive rows of coding tree units within the rectangular portion are encoded so that encoding dependencies are not broken at row boundaries and encoding parameters are propagated from an intermediate position along each row of the rectangular portion to the start of the next row of coding tree units; and outputting the encoded coding tree units according to an order with respect to the array of coding tree units which is different from a first raster order of coding tree units within successive respective rectangular portions.