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In this paper, we address the problem of representing objects using contours for the purpose of recognition. We propose a novel segmentation method for integrating a new contour matching energy into level set based segmentation schemes. The contour matching energy is represented by major components of Elliptic Fourier shape descriptors and serves as a shape prior to guide the curve evolution. The...
The Earth mover's distance (EMD) is a similarity measure that captures perceptual difference between two distributions. Its computational complexity, however, prevents a direct use in many applications. This paper proposes a novel differential EMD (DEMD) algorithm based on the sensitivity analysis of the simplex method and offers a speedup at orders of magnitude compared with its brute-force counterparts...
Background modeling is an important component of many computer vision systems. The numerous approaches to this problem differ in the statistical models used to describe the temporal behavior of single pixels. Without proper use of spatial coherence between pixel values, these models suffer greatly from memory consumption. In order to reduce spatial redundancy in the data, we propose a novel block-...
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