논문 해외 국제전문학술지(SCI급) FAST TRANSFORM UNIT DECISION FOR HEVC
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2014-08
- 저자명 김진수
- 학술지명 IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS
- 발행처명 IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 4
홈페이지논문 초록 (Abstract)
For the High Efficiency Video Coding (HEVC) standard, a fast transform unit (TU) decision method is proposed. HEVC defines the TU. representing a region sharing the same transformation, and it supports various transform sizes from 4 x 4 to 32 x 32 by using a q uadtree of TUs. The various sizes of TUs can provide good coding effi ciency, whereas it may dramatically increase encoding complexity. Assuming that a TU with highly compacted energy is unlikely to be split , the proposed method determines an appropriate TU size according to the position of the last non-zero transform coefficient. Experimental res ults show that this reduces encoding run time by 17.2% with a negligible coding loss of 0.78% BD-rate for the random-access scenario.