Intra motion compensation and entropy coding improvements for HEVC screen content coding

Budagavi, Madhukar; Kwon, Do-Kyoung

doi:10.1109/pcs.2013.6737759

Cited by 18 publications

(17 citation statements)

References 2 publications

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“…The trade-off between the two requirements were carefully evaluated in multiple Core Experiments and Ad Hoc Groups [17,13,16,98,39]. Beside codingefficiency improving technology, many techniques were incorporated to improve throughput including reducing regular coded bins, grouping bypass bins together, grouping bins that use the same contexts together, reducing context selection dependencies, and reducing the total number of signaled bins.…”

Section: Discussionmentioning

confidence: 99%

“…Edge offset (EO) involves comparing the sample and its neighboring sample values in one of four angular directions (horizontal, vertical, 45 • , 135 • ). 13 The sample is compared to its neighbors in the selected direction (e.g., the sample has a lower value than both its neighbors); based on the comparison, the sample is assigned to a category, which determines the offset that is added to the sample. The value of the offset for a given category is set by the encoder.…”

Section: Signaling Of Sao Parametersmentioning

confidence: 99%

“…To maximize the impact of fast bypass coding, the bypass coded bins (i.e., the suffix bins) for both the x and y coordinate of the last position are grouped together for each TB in HEVC. n/a n/a 1111110 00 1111110 00 9 n/a n/a 1111110 01 1111110 01 10 n/a n/a 1111110 10 1111110 10 11 n/a n/a 1111110 11 1111110 11 [12][13][14][15] n/a n/a 1111111 xx 11111110 xx [16][17][18][19][20][21][22][23] n/a n/a n/a 111111110 xxx [24][25][26][27][28][29][30][31] n/a n/a n/a 111111111 xxx …”

Section: Last Position Codingmentioning

confidence: 99%

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Entropy Coding in HEVC

Sze

Marpe

2014

Integrated Circuits and Systems

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Context-Based Adaptive Binary Arithmetic Coding (CABAC) is a method of entropy coding first introduced in H.264/AVC and now used in the latest High Efficiency Video Coding (HEVC) standard. While it provides high coding efficiency, the data dependencies in H.264/AVC CABAC make it challenging to parallelize and thus limit its throughput. Accordingly, during the standardization of entropy coding for HEVC, both aspects of coding efficiency and throughput were considered. This chapter describes the functionality and design methodology behind CABAC entropy coding in HEVC.

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Section: Discussionmentioning

confidence: 99%

Section: Signaling Of Sao Parametersmentioning

confidence: 99%

Section: Last Position Codingmentioning

confidence: 99%

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Entropy Coding in HEVC

Sze

Marpe

2014

Integrated Circuits and Systems

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“…The tests performed during the standardization process show that HEVC may compress at half the bit-rate of H.264 with the same visual quality [18], at the expense of a higher complexity. Further extensions to HEVC [2] are scalable video coding (SVC) [35][36][37], 3D video/multiview video coding [38,39] and range extensions which include screen content coding [40,41], bit depths larger than 10 bits and color sampling of 4:2:2 and 4:4:4. Screen content coding in general refers to computer generated objects and screen shots from computer applications (both images and videos) and may require lossless coding.…”

Section: Block Diagrammentioning

confidence: 99%

Image segmentation approach for realizing zoomable streaming HEVC video

Patel

Rao

2015

2015 International Conference on Science and Technology (TICST)

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“…CABAC, which was also used in AVC, is a well known throughput bottleneck in the video codec, particularly at the decoder. Accordingly, multiple core experiments and ad hoc groups were established to study and improve the CABAC throughput throughout the HEVC standardization process [4,5]. The resulting CABAC for HEVC delivers higher throughput than AVC [6].…”

Section: Introductionmentioning

confidence: 99%

A comparison of CABAC throughput for HEVC/H.265 VS. AVC/H.264

Sze

Budagavi

2013

SiPS 2013 Proceedings

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The CABAC entropy coding engine is a well known throughput bottleneck in the AVC/H.264 video codec. It was redesigned to achieve higher throughput for the latest video coding standard HEVC/H.265. Various improvements were made including reduction in context coded bins, reduction in total bins and grouping of bypass bins. This paper discusses and quantifies the impact of these techniques and introduces a new metric called Bjøntegaard delta cycles (BDcycle) to compare the CABAC throughput of HEVC vs. AVC. BD-cycle uses the Bjøntegaard delta measurement method to compute the average difference between the cycles vs. bit-rate curves of HEVC and AVC. This metric is useful for estimating the throughput of an HEVC CABAC engine from an existing AVC CABAC design for a given bit-rate. Under the common conditions set by the JCT-VC standardization body, HEVC CABAC has an average BD-cycle reduction of 31.1% for all intra, 24.3% for low delay, and 25.9% for random access, when processing up to 8 bypass bins per cycle.

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Intra motion compensation and entropy coding improvements for HEVC screen content coding

Cited by 18 publications

References 2 publications

Entropy Coding in HEVC

Entropy Coding in HEVC

Image segmentation approach for realizing zoomable streaming HEVC video

A comparison of CABAC throughput for HEVC/H.265 VS. AVC/H.264

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