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The Euler number of a binary image is a very important topological property for image processing pattern recognition, and computer vision. This paper proposes an efficient run-based algorithm for Euler number computing. For calculating 8-neighbor runs, unlike the conventional run-based algorithm, which needs to record start points and end points of all runs, our algorithm only needs to record end...
The Euler number of a binary image is an important topological feature for many image processing, image analysis, pattern recognition, and computer vision applications. This paper proposes a new run-based Euler number computation algorithm. The conventional run-based algorithm processes rows of the given image one-by-one from top to bottom in a single phase. For each row, it finds the runs in the...
Although hexagonal images have attracted many attentions, there is almost no report on connected-component labeling algorithm for binary hexagonal images. This paper studies this problem for the first time and presents a fast connected-component labeling algorithm for binary hexagonal images. We analyze the connectivity of two different type foreground pixels with their processed pixels when an image...
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