Abstract:
Digital pictures may be encoded and decoded in a way that optimizes parallelization. Selected sections of a digital picture in a first list are encoded independently of encoding any of their neighbor sections. Sections in a second list located to the right of corresponding sections in the first list are encoded using at most the section to their immediate left. Sections in a third list located to the right of a corresponding section in the second list and immediately below a corresponding section in the first list are encoded using at most the sections to the immediate left, immediately above and immediately to its above-right. All other sections of the picture may be encoded in a normal manner.
Abstract:
Some embodiments provide methods of playing back content, comprising: accessing video content comprising a series of frames that if fully decoded would extend beyond a viewer's field of view, and wherein each encoded frame comprises multiple encoded sections; determining a field of view of the viewer; identifying one or more sections of the first frame that are at least partially within the field of view; decoding the one or more sections of the first frame while not decoding one or more of the sections of the first frame that are not within the field of view; and displaying the one or more decoded sections of the first frame such that the portion of the first frame is displayed, and wherein less than all of the first frame is decoded and less than all of the first frame is displayed during playback.
Abstract:
Some embodiments provide methods of playing back content, comprising: accessing video content comprising a series of frames that if fully decoded would extend beyond a viewer's field of view, and wherein each encoded frame comprises multiple encoded sections; determining a field of view of the viewer; identifying one or more sections of the first frame that are at least partially within the field of view; decoding the one or more sections of the first frame while not decoding one or more of the sections of the first frame that are not within the field of view; and displaying the one or more decoded sections of the first frame such that the portion of the first frame is displayed, and wherein less than all of the first frame is decoded and less than all of the first frame is displayed during playback.
Abstract:
Mode searching and early termination of a video picture may include determining the cost value of a simple intra-mode prediction of the video picture; determining the cost value of an inter-mode prediction of the video picture; determining a threshold value based on a given quantization parameter (QP); comparing the cost value of the simple intra-mode prediction to the sum of the cost value of the inter-mode prediction and the threshold value; and performing a mode-prediction of the video picture in accordance with the result obtained. Fast compression of variable length symbols may include receiving a variable length symbol with one or more tokens; combining the one or more tokens in the variable length symbol to form a token combination; and determining a bit representation of the token combination in correspondence to a probability threshold associated with the token combination.
Abstract:
Digital pictures may be encoded and decoded in a way that optimizes parallelization. Selected sections of a digital picture in a first list are encoded independently of encoding any of their neighbor sections. Sections in a second list located to the right of corresponding sections in the first list are encoded using at most the section to their immediate left. Sections in a third list located to the right of a corresponding section in the second list and immediately below a corresponding section in the first list are encoded using at most the sections to the immediate left, immediately above and immediately to its above-right. All other sections of the picture may be encoded in a normal manner.