Dr. Ferhad Keissarian Profile

Dr. Ferhad Keissarian

Senior Lecturer at Monash Univ

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Proceedings Article | 9 July 2011 Paper

Progressive image transmission using pyramid structure and pattern matching coding

F. Keissarian

Proceedings Volume 8009, 80092G (2011) https://doi.org/10.1117/12.896672

KEYWORDS: Image compression, Visualization, Image processing, Image resolution, Receivers, Computer programming, Computer simulations, Image quality, Image transmission, Visual compression

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A pyramidal data structure suited for coding and progressive transmission of images is proposed in this work. A mean pyramid representation of an image is first built up by forming a sequence of reduced-size images. A pyramid of difference images is then generated by subtracting the previous coded image from the original image at each level of the pyramid. Progressive transmission is achieved by sending all the nodes in the difference pyramid starting from the top level and ending at the bottom level. To gain efficiency, a pattern matching- based coding algorithm is applied to the difference pyramid of the image on a level-by-level basis. The proposed coding method, compresses the difference images by using a set of parameters computed based the visual activity of individual image blocks. The coding efficiency of the proposed technique along with the low computational complexity and simple parallel implementation of the pyramid approach allows for a high compression ratio as well as a good image quality. Satisfactory coded images have been obtained at bit rates in the range of 0.30 - 0.33 bits per pixel (bpp).

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