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IMAGE COMPRESSION FOR STORAGE TRANSMISSION OF DIGITAL IMAGES.
| 题名： | IMAGE COMPRESSION FOR STORAGE TRANSMISSION OF DIGITAL IMAGES. |
| 作者： | Cherkassky-V; He-X; Shao-J |
| 关键词： | Algorithms-; Data-storage; Digital-compression; Digital-images; Image-transmission; Minnesota-; MrSID-; Software-packages; State-departments-of-transportation; Wavelets-; Websites-Information-retrieval |
| 摘要： | This project researched image compression methods for storage and transmission of digital images at the Minnesota Department of Transportation (Mn/DOT). Researchers compared the performance of several commercial and research methods for image compression based on the "typical" image provided by the Mn/DOT Office of Land Management. They also surveyed some new image compression methods based on wavelet thresholding. The report details the analyses and comparisons and includes recommendations. Researchers chose MrSID, a commercial software package for image compression, as a suitable method for the needs of MnDOT's Office of Land Management. MrSID uses a wavelet transform-based algorithm to achieve both the efficient storage and retrieval of large digital images. Its main practical advantages include improved utilization of storage and transmission resources and a multi-resolution browsing capability. MrSID can selectively decompress a portion of an image by zooming at different levels of detail. Researchers implemented a demo website, which can be browsed easily and implements the zooming function. The web site address is http://rocky.dot.state.mn.us/research. |
| 总页数： | 2000/08. pp28 |
| 报告类型： | 科技报告 |
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