| Autor: |
Oh, Han, Bilgin, Ali, Marcellin, Michael |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Druh dokumentu: |
Článek |
| ISSN: |
2078-2489 |
| DOI: |
10.3390/info7030045 |
| Popis: |
Image sizes have increased exponentially in recent years. The resulting high-resolution images are often viewed via remote image browsing. Zooming and panning are desirable features in this context, which result in disparate spatial regions of an image being displayed at a variety of ( spatial) resolutions. When an image is displayed at a reduced resolution, the quantization step sizes needed for visually lossless quality generally increase. This paper investigates the quantization step sizes needed for visually lossless display as a function of resolution, and proposes a method that effectively incorporates the resulting ( multiple) quantization step sizes into a single JPEG 2000 codestream. This codestream is JPEG 2000 Part 1 compliant and allows for visually lossless decoding at all resolutions natively supported by the wavelet transform as well as arbitrary intermediate resolutions, using only a fraction of the full-resolution codestream. When images are browsed remotely using the JPEG 2000 Interactive Protocol ( JPIP), the required bandwidth is significantly reduced, as demonstrated by extensive experimental results. |
| Databáze: |
Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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