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Compression of greyscale images based on sub-band decomposition using morphological filters.

Pniewski J., Szoplik T.

Optica Applicata

2000

Vol. 30, nr 2-3

335-347

We present an algorithm for compression of greyscale images, which is a dification of the morphological sub-band decomposition algorithm proposed by Pei and Chen. In the first step, an input image is decomposed into four sub-bands using morphological opening and closing filters. In the second step, sub-bands are compressed with lossless methods matched to the dynamics of each sub-band. After transmission the sub-bands are decompressed and added together to form the output image. Results of computer simulations are presented.