منابع مشابه
Hierarchical Contour Shape Analysis
This paper introduces a novel shape representation which performs shape analysis in a hierarchical fashion using Gaussian and Laplacian pyramids. A background on hierarchical shape analysis is given along with a detailed explanation of the hierarchical method, and results are shown on natural contours. A comparison is performed between the new method and our proposed approach using Point Distri...
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One of the principal objectives of the field of computer vision is to be able to reconstruct a 3-dimensional model of the world from 2-dimensional imagery, as biological systems seem to do so effortlessly. To that end, a number of techniques have been proposed, with popular examples including stereoscopy, shape-from-shading, and shape-fromtexture. However, each of these techniques tend to funct...
متن کاملShape and contour detection
Detectability of contours may be affected by long-range interactions between neurons in early stages of visual cortex. Specifically, neurons with receptive fields arrayed along the length of a contour may facilitate each other in a position- and orientation-dependent manner. Accordingly, the overall geometry of a contour should significantly influence both the strength of these long-range inter...
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The corticocortical pathway from striate cortex into the temporal lobe plays a crucial role in the visual recognition of objects. Anatomical studies indicate that this pathway is mainly organized as a serial hierarchy of multiple visual areas, including V1, V2, V3, V4, and inferior temporal cortex (IT). As expected from the anatomy, we have found that neurons in V4 and IT, like those in V1 and ...
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Kanade [1] proposed a heuristic for interpreting shape from contour. To apply his heuristic, skewed symmetries have to be found. In this paper, an algorithm for finding skewed symmetries in a planar point set is proposed. The method requires a simple rotation and midpoint finding, followed by a Hough transform. A variant of the Hough transform is reported. It is based on interpreting it as a ro...
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ژورنال
عنوان ژورنال: Computación y Sistemas
سال: 2015
ISSN: 2007-9737,1405-5546
DOI: 10.13053/cys-19-2-1935