
HP Labs Technical Reports
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MultiplicationFree Approximate Algorithms for Compressed Domain Linear Operations on Images
Merhav, Neri
HPL96111
Keyword(s): image processing, compresseddomain processing, downsampling, scaling, translation, filtering, convolution, image compression, discrete cosine transform
Abstract: We propose a method for devising approximate multiplicationfree algorithms for compresseddomain linear operations on images, e.g., downsampling, translation, filtering, etc. We demonstrate that the approximate algorithms give output images that are nearly perceptually equivalent to those of the exact processing, while the computational complexity is significantly reduced.
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