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An adaptive rain streak removal algorithm for a single image is proposed in this work. We observe that a typical rain streak has an elongated elliptical shape with a vertical orientation. Thus, we first detect rain streak regions by analyzing the rotation angle and the aspect ratio of the elliptical kernel at each pixel location. We then perform the nonlocal means filtering on the detected rain streak...
In this paper, we introduce a new sharpening method which guarantees colour constancy and resolves the problem of equi-luminance colours. The algorithm is similar to unsharp masking in that the gradients are calculated at different scales by blurring the original with a variable size kernel. The main difference is in the blurring stage where we calculate the average of an n × n neighborhood by projecting...
The novel field of fluid lens cameras introduces unique image processing challenges. Intended for surgical applications, these fluid optics systems have improved miniaturization over glass lenses and do not have moving parts while zooming. However, the liquid medium creates non-uniform color blur, which causes certain color planes to appear sharper than others. We propose an adapted perfect reconstruction...
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