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Optimizing block-thresholding segmentation for multilayer compression of compound images

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3 Author(s)
de Queiroz, R.L. ; Xerox Corp., Webster, NY, USA ; Fan, Z. ; Tran, T.D.

Compound document images contain graphic or textual content along with pictures. They are a very common form of documents, found in magazines, brochures, Web sites, etc. We focus our attention on the mixed raster content (MRC) multilayer approach for compound image compression. We study block thresholding as a means to segment an image for MRC. An attempt is made to optimize the block threshold in a rate-distortion sense. Also, a fast algorithm is presented to approximate the optimized method. Extensive results are presented including rate-distortion curves, segmentation masks and reconstructed images, showing the performance of the proposed algorithm

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Image Processing, IEEE Transactions on  (Volume:9 ,  Issue: 9 )