Image edge detection method and device based on Canny algorithm
An image edge and detection method technology, applied in the field of image processing, can solve problems such as threshold setting relying on experience, edge blur detection, noise influence, etc.
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[0166] In order to verify the processing effect of the algorithm proposed in this paper, the algorithm proposed in this paper, traditional Sobel algorithm and Laplace algorithm are used to process a lidar image and Lena image. The processing results are shown in Figure 1 and Figure 2. among them Figure 1a with Figure 2a Is the original graphic, Figure 1b with Figure 2b In order to adopt the processing result diagram of the algorithm in this paper, Figure 1c with Figure 2c In order to use Sobel algorithm to process the result graph, Figure 1d with Figure 2d It is the result figure processed by Laplace algorithm.
[0167] It can be seen from the experimental results that the three methods can extract the edge information of objects in the image to varying degrees. The Sobel algorithm can reliably extract edges with obvious contrast, and lose more serious edges with less contrast. The edge extraction effect of the Laplace algorithm is better than the Sobel al...
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