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In industrial production, the application of the on-line detection and recognition technology of capsule defects is more and more widely. The correct segmentation of the target capsule is essential for the feature extraction and accurate recognition. Because the difference between the oval transparent capsule and background is small and the image exists uneven illumination interference, common methods...
Markov random field (MRF) model has been widely employed in edge-preserving regional noise smoothing penalty to reconstruct piece-wise smooth images in the presence of noise, such as in low-dose computed tomography (LdCT). While it preserves edge sharpness, its regional smoothing may sacrifice tissue image textures, which have been recognized as useful imaging biomarkers, and thus it may compromise...
In this paper, a novel multifocus image fusion method based on region selection is proposed. The basic idea is to select sharply focused regions from source images and to combine them together to reconstruct the resultant image. Region Acutance as a kind of superior sharpness criterion is introduced here for region segmentation. In view of the inevitably errors of selection, morphological operations...
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