전자공학회논문지B (Journal of the Korean Institute of Telematics and Electronics B)
- 제30B권6호
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- Pages.49-58
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- 1993
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- 1016-135X(pISSN)
무손실 점진적 영상 전송을 위한 피라미드 데이터 구조에 관한 연구
A Pyramid Data Structure for Progressive Lossless Image Transmission
초록
Extended reduced difference pyramid (ERDP) is proposed for lossless progressive image transmission, which is based on a new transform called rounded-transform(RT). The RT is a nonlinear and reversible transform of integers into integers utilizing two kinds of the rounding operations such as round up and down. The ERDP can be obtained from an N-poing RT or a series of RTs of both. For the performance evaluation, the entropy of the difference images to be transmitted is used as a lower bound transmission rate. Two examples of the ERDP can be easily shown, which is more effective in the entropy than the ordinary RDP.
키워드