Early Termination Algorithm for CU Size Decision in HEVC Intra Coding
Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICMVIP09_020
تاریخ نمایه سازی: 6 اسفند 1395
Abstract:
Intra coding in the High Efficiency Video Coding (HEVC) standard can significantly improve the compression efficiency but increasing the number of intra prediction modes and also higher number of Coding Unit (CU) sizes in the HEVC standard imposes much higher computational load compared with intra prediction in H.264/AVC, which substantially is computational intensive. To reduce the intra coding complexity in HEVC, this paper presents an early termination algorithm for intra prediction. The proposed method is based on the fact that a homogenous region can be predicted with larger CUs. As a result when the proposed smoothness parameter is lower than apredefined threshold, only the prediction modes in the current CU are evaluated. Experimental results indicate that the proposed algorithm can provide on average 27.5% time savings with only 0.4% BD-rate loss whereas it maintains the same coding video quality compared with HEVC reference software, HM15.0, in all intra-main configuration
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Authors
Mohammadreza Ramezanpour
PHD candidate in Department of Computer Engineering Science and Research branch, Islamic Azad University Tehran, Iran
Farzad Zargari
Information Technology Research Institute Iran Telecom Research Center (ITRC) Tehran, Iran