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In this paper, we describe an approach for detecting patterns in various size and angle using FPGA. In many approaches, features of a given pattern which are invariant to scaling and/or rotation are defined in advance, and those features are searched in a given image. These approaches make it possible to narrow down the candidate regions with less computational cost, but the sensitivity depends on...
In this paper, we describe an approach for real-time detection of rotated patterns in an image using FPGA. In many approaches, a two-dimensional pattern and the target regions in the image are transformed to one-dimensional arrays or several pattern specific values which are invariant to rotation, and the regions in which the pattern may exist are listed up using them. These approaches make it possible...
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