John G. Webster (Editor) 's 26.Image Processing PDF

By John G. Webster (Editor)

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Extra info for 26.Image Processing

Sample text

The image/video compression standards have had tremendous impact on the development of consumer products. Without the standards, the basic research results (such as transform coding of images) would still be lying dormant in the archives of scholarly journals. In this article, we review the most important basic concepts and techniques of image and video coding, describe the major standards, and discuss some of the challenging research issues. We mention in passing that image/video coding in the broad sense includes: source coding (compression), channel coding (error detection and correction), encryption, and watermarking.

On the other hand, no good matches may be found for some blocks in the image. In such cases, the encoder may choose to break the range block into smaller range subblocks and conduct the search for the subblocks instead. , how much the brightness was changed, if and how much the domain block was rotated). It should be emphasized that the encoder does not save either the values of the pixels in the range blocks or the values of the pixels in the domain block. The addresses and the quantized transformation parameters for all the range blocks in the image are entropy-coded to generate the final binary code for the image.

19–29. 36. C. B. Burckhardt Use of random phase mask for the recording of Fourier transform holograms of data masks, Appl. , 9: 695–700, 1970. 37. Y. Takeda Holographic memory with high quality and high information storage density, J. Appl. , 11: 656–665, 1972. 38. Y. Takeda Y. Oshida Y. Miyamura Random phase shifters for Fourier transformed holograms, Appl. , 11: 818–822, 1972. 39. W. C. Stewart A. H. Firester E. C. Fox Random phase data masks: Fabrication tolerances and advantages of four phase level masks, Appl.

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26.Image Processing by John G. Webster (Editor)


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