(The) efficient EBCOT H/W of JPEG2000 with pre-rate control engine = 선행 흐름 제어 엔진을 이용한 효율적인 JPEG2000 EBCOT 하드웨어

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As demand for multi functional and high quality devices has been increasing rapidly, image compression standards is getting more strong compression factor with better image quality characteristics. JPEG2000 has been the new solution alternating the JPEG. JPEG2000 adopts the DWT as the frequency converter and compounded of multiple coding algorithms as the entropy coding, named “EBCOT”. But the EBCOT accesses the DWT result by the bit-plane order. That is the obstacle in many ways; memory access and intermediate buffer problem, and throughput. The fast and approximate method co-works together with a high performance EBCOT module for rate control. Among the efficient hardware researches about JPEG2000, proposed architecture is one of the simplest and accomplishes the immediate processing time saving. The proposed architecture discards the EBCOT process of bit-plane which will be eliminated in the rate control function. With this technique, it can be possible to improve the 9% ~27% of processing time when EBCOT hardware is running. And also, it improves more than 25% of processing time when rate control software is running. The additive logic is very small, and also is not affect the critical delay. Moreover, image is little degraded because the eliminated bit-planes is the real candidates to discard by rate control function. The proposed architecture is implementation in Verilog HDL and synthesized in Samsung 0.18um technology. The operating frequency is 133MHz.
Advisors
Park, In-Cheolresearcher박인철researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2008
Identifier
297228/325007  / 020063559
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2008.2, [ vi, 50 p. ]

Keywords

JPEG2000; EBCOT; Rate Control; Bit-Plane; 영상압축; 흐름제어; 하드웨어; JPEG2000; EBCOT; Rate Control; Bit-Plane; 영상압축; 흐름제어; 하드웨어

URI
http://hdl.handle.net/10203/38611
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=297228&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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