Area of the disk cover as an image shape descriptorстатья

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Дата последнего поиска статьи во внешних источниках: 11 марта 2017 г.

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[1] Lomov N. A., Mestetskiy L. M. Area of the disk cover as an image shape descriptor // Computer Optics. — 2016. — Vol. 40, no. 4. — P. 516–525. A “width of a shape” concept considered in relation to variable-width objects is used as the integral shape descriptor for image recognition tasks. The approach to the definition of this concept is based on covering the figure of interest with certain-size disks. A function that defines the area of disk cover against the disk size is used as a shape descriptor. An analytical method for calculating the area of disk cover for polygonal figures is proposed. The possibility to approximate by polygonal figures binary raster images and objects with non-linear boundaries makes the approach universal. The proposed method is based on the medial representation of objects as a skeleton and a radial function. The method provides high accuracy and computational efficiency. The efficiency of the proposed shape descriptor is illustrated by the example of its application to the digital font recognition problem. [ DOI ]

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