A Study of Using Inter-Block Redundancy to Improve JPEG 2000 Compression Performance
碩士 === 國立交通大學 === 資訊科學系所 === 92 === In recent year, with the mobile phone with integrated digital camera becoming more and more popular, the size of image file is required smaller to achieve better storage or transmission efficiency. In order to fit such kind of application environments, how to co...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | en_US |
| Published: |
2004
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/99291500073848266753 |
| Summary: | 碩士 === 國立交通大學 === 資訊科學系所 === 92 === In recent year, with the mobile phone with integrated digital camera becoming more and more popular, the size of image file is required smaller to achieve better storage or transmission efficiency. In order to fit such kind of application environments, how to compress the image file to a smaller size has become a more and more important topic. The method proposed in this paper utilizes the inter-block redundancy to further compress an image by a fast algorithm to drop redundant blocks in the encoder side and to utilize our block filling method to fill them back in the decoder. In this way, we can achieve the goal of further compressing an image file. Experimental results indicate that in high compression ratio the proposed method can indeed improve the compression ratio and meanwhile maintain a proper visual quality and on the other hand in low compression ratio the method is capable to maintain a finer image quality compared to pure JPEG 2000 standard.
|
|---|