The Use Of Human Visibility Functions In Segmentation Coding

L. Van Eycken; B. Van Mellaert; P. Wambacq; A. Oosterlinck

doi:10.1117/12.960473

5 September 1989 The Use Of Human Visibility Functions In Segmentation Coding

L. Van Eycken, B. Van Mellaert, P. Wambacq, A. Oosterlinck

Proceedings Volume 1099, Advances in Image Compression and Automatic Target Recognition; (1989) https://doi.org/10.1117/12.960473
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

The use of human visibility functions in image coding serves two purposes. First of all, they indicate the importance of certain pixel values to the human observer. The compression scheme can use this knowledge and allow a larger error for irrelevant features, resulting in a higher compression ratio of the image without visual image quality degradation. The use of the visibility functions is demonstrated in segmentation coding schemes, since these schemes allow a local (in the space domain) modification of the compression parameters. Furthermore, properties resulting from the shape of the visibility function are hardwired into a segmentation compression scheme. The second purpose of thy, visibility functions lies is the evaluation of the compressed image. The functions can be incorporated into a quality measure, describing the visual difference between the original image and the compressed one. The results of some experiments in using the visibility functions are described.

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L. Van Eycken, B. Van Mellaert, P. Wambacq, and A. Oosterlinck "The Use Of Human Visibility Functions In Segmentation Coding", Proc. SPIE 1099, Advances in Image Compression and Automatic Target Recognition, (5 September 1989); https://doi.org/10.1117/12.960473

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KEYWORDS

Image segmentation

Visibility

Image compression

Image quality

Quantization

Automatic target recognition

Convolution

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