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A new coding method to exploit intra-subband and inter-subband correlation of the medical images in the transform domain is presented. Subbands corresponding to each direction are combined together and treated as a set of hierarchical trees. If a set of hierarchical trees becomes significant, it is divided into four sets and each set is processed separately. The image is encoded progressively and...
From a proper diagnosis point of view, an accurate and fast image segmentation algorithms are of paramount importance prior to the calculation of the diagnostic parameters. A precise method for segmenting the cardiac magnetic resonance (CMR) images is always desired to increase the accuracy. We prefer random walk method, as it is robust to noise and does not require any pre-knowledge about the input...
We present a fast and robust method to correct contrast variation in retinal fundus imagery. The technique uses a mixture of Gaussians to model the bias of the intensity variation. Typically a three or four component mixture is sufficient to characterize the principal variation due to the spherical geometry of the retina, the high-contrast reflection off the optic nerve and the darker macula. We compare...
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