Topic
Context-adaptive binary arithmetic coding
About: Context-adaptive binary arithmetic coding is a research topic. Over the lifetime, 8254 publications have been published within this topic receiving 170736 citations. The topic is also known as: CABAC.
Papers published on a yearly basis
Papers
More filters
29 Jun 1997
TL;DR: Limited by the inherent computational intractability of vector quantization in dimensions, practical VQ coders all employ signal blocks of rather modest sizes, failing to capture all higher-order statistical dependency.
Abstract: Limited by the inherent computational intractability of vector quantization in dimensions, practical VQ coders all employ signal blocks of rather modest sizes, failing to capture all higher-order statistical dependency. Therefore, context-based, adaptive entropy coding of VQ indexes can significantly reduce the bit rate of VQ coders for a given distortion.
TL;DR: Transmission capacity on the coding gain for various code rates, which show the extent of up to 75Gb/s transmission capacity to get through it was confirmed that these coding techniques.
Abstract: In this paper, We operate at a relatively low BER or using forward error control coding techniques on ways to increase the capacity of optical communication systems research. Coding gain is defined as the ratio of the probability of the coded signal and coding of error signal. Coding gain is increased, partly because of the period, to reduce the value of the optimal coding of the signal error probability decreases because of the effective bit binary symbol duration is longer than can be ignored. Transmission capacity on the coding gain for various code rates, which show the extent of up to 75Gb/s transmission capacity to get through it was confirmed that these coding techniques.
29 Oct 2001
TL;DR: An integrated algorithm with watermarking and compression is proposed, which shows good robustness against various attacks.
Abstract: An integrated algorithm with watermarking and compression is proposed. Since various images have different embedding capacities, first the capacity of each image is estimated, then watermark with bit rates within the capacity will be embedded and compression will be performed. Experiments show its good robustness against various attacks.
Patent•
05 Mar 2020
TL;DR: In this article, an extended quadtree (EQT) partition is used to partition a video block in multiple sub-blocks such that at least one sub-block has a size that is different from a half width of the video block times a half height of the block, and the bin string indicates a partition type for the partitioned video block.
Abstract: A method of video processing includes determining, for a conversion between a coded representation of a video block of a video region and the video block, that an extended quadtree (EQT) partition is enabled for at least one video block of the video region, and performing the conversion based on the determining. The EQT partition splits the video block in multiple sub-blocks such that at least one of the multiple sub-blocks has a size that is different from a half width of the video block times a half height of the video block, the coded representation of the video block includes one or more bits of a bin string that are encoded using a context adaptive binary arithmetic coding (CABAC) technique, and the bin string indicates a partition type for the partitioned video block.
TL;DR: In this paper, the critical path for the hardware implementation of binary arithmetic encoder (BAE) was analyzed in detail and a new BAE architecture with a five-stage pipeline and one bin per cycle is proposed, the latency of critical path is substantially reduced, and the frequency and throughput rate are improved.
Abstract: This paper focuses on the pipeline design of context-based adaptive binary arithmetic coding (CABAC). CABAC is a well-known bottleneck in very large scale integration circuit design of H.264/AVC encoder. Despite its high performance, the tight feedback loops of CABAC make parallelization difficult. Most researchers are concerned about multi-bin processing regardless of pipeline design. However, without pipeline, the overall performance becomes significantly limited. In this paper, the critical path for the hardware implementation of binary arithmetic encoder (BAE) was analyzed in detail. We break down the computing steps to the best extent, and rearrange such steps to the appropriate pipeline to achieve a balanced latency at each stage. Moreover, a new BAE architecture with a five-stage pipeline and one bin per cycle is proposed, the latency of critical path is substantially reduced, and the frequency and throughput rate are improved. An field-programmable gate array implementation of the proposed pipelined architecture in our H.264 encoder is capable of a 190 Mbps encoding rate. A maximum 483 MHz could be achieved on SMIC 0.13 μm technology, which meets the requirements of quad full high-definition encoding at 30fps. The proposed architecture can be utilized in other designs to achieve improved performance.