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» Quality of Compressed Medical Images
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ICIP
2007
IEEE
15 years 5 months ago
Graph-Cut Rate Distortion Algorithm for Contourlet-Based Image Compression
The geometric features of images, such as edges, are difficult to represent. When a redundant transform is used for their extraction, the compression challenge is even more dif...
Maria Trocan, Béatrice Pesquet-Popescu, Jam...
ICASSP
2010
IEEE
14 years 11 months ago
No-reference image sharpness assessment based on local phase coherence measurement
Sharpness is one of the most determining factors in the perceptual assessment of image quality. Objective image sharpness measures may play important roles in the design and optim...
Rania Hassen, Zhou Wang, Magdy Salama
ICIP
2000
IEEE
16 years 25 days ago
Adaptive Scanning Methods for Wavelet Difference Reduction in Lossy Image Compression
This paper describes methods for adapting the scanning order through wavelet transform values used in the Wavelet Difference Reduction (WDR) algorithm of Tian and Wells. These new...
James S. Walker, Truong Q. Nguyen
ICIP
2000
IEEE
15 years 3 months ago
Low-Complexity Scalable DCT Image Compression
We have developed a scalable image compression scheme with a good performance-complexity trade-off. Like JPEG, it is based on the 8 × 8 block discrete cosine transform (DCT), but...
René J. van der Vleuten, Richard P. Kleihor...
ICIP
2004
IEEE
16 years 26 days ago
JPEG-matched data filling of sparse images
To efficiently compress rasterized compound documents, an encoder must be content-adaptive. Content adaptivity may be achieved by using a layered approach. In such an approach, a ...
George Pavlidis, Sofia Tsekeridou, Christodoulos C...