지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 863 - 866 (4page)
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초록· 키워드
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In this paper, we propose a novel entropy coding method to enhance compression ratio of the JPEG standard. Based on the observation that JPEG entropy coding performs better for the data with longer sequences of consecutive zeros and lower coefficients in their magnitudes, we extract low values from the AC coefficients of a JPEG block to replace then with zeros. The resulting blocks are entropy-encoded with JPEG standard method, while the extracted sequence of the low coefficients are compressed with a method designated to those values. This allows us to transmit the JPEG compatible part and the remaining part separately to provide semi-progressive transmission, where the standard JPEG decoder can produce an image with little degradation using the former part, and a custom decoder can also add fine details using the later. The compression ratio of the proposed method for the standard image is better than the standard JPEG up to 5% while not sacrificing the high computation efficiency of JPEG.
목차
Abstract
Ⅰ. 서론
Ⅱ. 본론
Ⅲ. 실험
Ⅳ. 결론 및 향후 연구 방향
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UCI(KEPA) : I410-ECN-0101-2015-560-001024508