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We present an efficient and scalable technique for spatiotemporal segmentation of long video sequences using a hierarchical graph-based algorithm. We begin by over-segmenting a volumetric video graph into space-time regions grouped by appearance. We then construct a “region graph” over the obtained segmentation and iteratively repeat this process over multiple levels to create a tree of spatio-temporal...
Designing effective image priors is of great interest to image super-resolution (SR), which is a severely under-determined problem. An edge smoothness prior is favored since it is able to suppress the jagged edge artifact effectively. However, for soft image edges with gradual intensity transitions, it is generally difficult to obtain analytical forms for evaluating their smoothness. This paper characterizes...
This paper is based on the multi-scale analysis of the wavelet transform. By detecting the part modulus maximum of the planar wavelet transformation coefficient, it can acquire the image edge feature of the rubber gasket and demonstrate the feasibility and advantages of Gaussian function, especially the smoothing function. This method successfully retains the edge information of rubber gasket and...
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