26 August 2004 Dyadic-shift-based image processing
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Proceedings Volume 5566, Optical Security and Safety; (2004) https://doi.org/10.1117/12.577157
Event: Optical Security and Safety, 2003, Warsaw, Poland
Abstract
The dyadic shift-based image processing uses the address permutation of the individual pixels or the permutation of their gray levels or both by means of the XOR operation. It is properly described within the framework of the two-dimensional Walsh functions and Walsh transforms. The dyadic shift procedures allow the transformation of the original image and its posterior recovery without information loss by simply performing further permutations. In addition, comparison of particular features of different images can be achieved by applying dyadic correlations, which in turn can also take advantage of the Walsh transforms. Therefore, the dyadic shift-based image processing has potential applications on image encryption, image enhancement and filtering and pattern recognition among others.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roman Castaneda, Javier Gonzalez, Kenneth Cabrera, "Dyadic-shift-based image processing", Proc. SPIE 5566, Optical Security and Safety, (26 August 2004); doi: 10.1117/12.577157; https://doi.org/10.1117/12.577157
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