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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.11 No.2
- 발행연도
- 2016.3
- 수록면
- 519 - 528 (10page)
이용수
초록· 키워드
오류제보하기
In order to achieve fast computational speed with good visual quality of output video, we propose a frequency domain based new fractal video compression scheme. Normalized cross correlation is used to find the structural self similar domain block for the input range block. To increase the searching speed, cross correlation is implemented in the frequency domain using FFT with one computational operation for all the domain blocks instead of individual block wise calculations. The encoding time is further minimized by applying rotation and reflection DFT properties to the IFFT of zero padded range blocks. The energy of overlap small size domain blocks is pre-computed for the entire reference frame and retaining the energies of the overlapped search window portion of previous adjacent block. Quadtree decompositions are obtained by using domain block motion compensated prediction error as a threshold to control the further partitions of the block. It provides a better level of adaption to the scene contents than fixed block size approach. The result shows that, on average, the proposed method can raise the encoding speed by 48.8 % and 90 % higher than NHEXS and CPM/NCIM algorithms respectively. The compression ratio and PSNR of the proposed method is increased by 15.41 and 0.89 dB higher than that of NHEXS on average. For low bit rate videos, the proposed algorithm achieve the high compression ratio above 120 with more than 31 dB PSNR.
목차
Abstract
1. Introduction
2. Related Work
3. The Fractal Block Coding
4. Normalized Cross Correlation for Motion Estimation
5. New Fractal Video Coding
6. Experimental Results
7. Conclusion
References
참고문헌 (33)
참고문헌 신청
[학술지(정기간행물)] - A. E. Jacquin / 1992 / Image Coding Based on a Fractal Theory of Iterated Contractive Image Transformations / IEEE Transactions on Image Processing 1 (1) : 18 ~ 30
[단행본] - Y. Fisher / 1995 / Fractal Image Compression: Theory and Application / Springer Verlag
[학술지(정기간행물)] - M. S. Lazar / 1994 / Fractal Block Coding of Digital Video / IEEE Transactions on Circuits &Systems for Video Technology 4 (3) : 297 ~ 308
[학술지(정기간행물)] - Y. L. Lin / 2011 / An Edge Property-Based Neighborhood Region Search Strategy for Fractal Image Compression / Computers & Mathematics with Applications 62 (1) : 310 ~ 318
[학술대회논문] - C. Urmson / 1998 / Video Compression through Fractal Block Coding / IEEE Canadian Conference on Electrical and Computer Engineering 2 : 465 ~ 467
[단행본] - Y. Fisher / 1995 / Fractal Image Compression: Theory and Application / Springer Verlag
[학술지(정기간행물)] - M. S. Lazar / 1994 / Fractal Block Coding of Digital Video / IEEE Transactions on Circuits &Systems for Video Technology 4 (3) : 297 ~ 308
[학술지(정기간행물)] - Y. L. Lin / 2011 / An Edge Property-Based Neighborhood Region Search Strategy for Fractal Image Compression / Computers & Mathematics with Applications 62 (1) : 310 ~ 318
[학술대회논문] - C. Urmson / 1998 / Video Compression through Fractal Block Coding / IEEE Canadian Conference on Electrical and Computer Engineering 2 : 465 ~ 467
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UCI(KEPA) : I410-ECN-0101-2016-560-002378376