Title :
Orientation-sensitive interpolative pyramids for lossless and progressive image coding
Author :
Boulgouris, Nikolaos V. ; Strintzis, Michael G.
Author_Institution :
Information Processing Laboratory, Aristotle University of Thessaloniki
fDate :
4/1/2000 12:00:00 AM
Abstract :
This paper presents a modified JPEG coder that is applied to the compression of mixed documents (containing text, natural images, and graphics) for printing purposes. The modified JPEG coder proposed in this paper takes advantage of the distinct perceptually significant regions in these documents to achieve higher perceptual quality than the standard JPEG coder. The region-adaptivity is performed via classified thresholding being totally compliant with the baseline standard. A computationally efficient classification algorithm is presented, and the improved performance of the classified JPEG coder is verified
Keywords :
code standards; data compression; filtering theory; image classification; image coding; image resolution; interpolation; telecommunication standards; baseline standard; classified JPEG coder; classified thresholding; computationally efficient classification algorithm; document compression; graphics; lossless image coding; modified JPEG coder; natural images; orientation-sensitive interpolative pyramids; perceptual quality; perceptually significant regions; performance; printing; progressive image coding; region-adaptivity; text; Entropy; Image coding; Image communication; Image reconstruction; Image resolution; Image storage; Interpolation; Pixel; Propagation losses; Signal resolution;
Journal_Title :
Image Processing, IEEE Transactions on
