Adaptive threshold value color image edge detection method based on FPGA (Field Programmable Gate Array) and Kirsch
An adaptive threshold, edge detection technology, applied in image enhancement, image analysis, image data processing and other directions, to achieve the effect of improved effect, easy implementation and strong flexibility
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[0032] The present invention uses FPGA as the core of timing control and data processing, and uses OV7725 as the source of image data collection. Such as figure 1 Shown is the flow chart of the present invention, which is mainly divided into six steps, including image color decomposition, image filtering and denoising, calculating threshold and Kirsch gradient value, realizing image morphology processing, synthesizing RGB888 format data, designing VGA circuit and displaying result. In the following, a color image with flowers as the target object is used as a preferred embodiment to introduce the implementation process of the present invention in detail. Such as figure 2 As shown, the color image includes two objects of different colors, the subject to be detected is a red flower, and the background is covered by green branches and leaves, and the two have areas that overlap and reflect each other. This embodiment uses the method of the present invention to p...
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