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Edge detection is the process of finding sharp contrasts in intensities in an image. This process significantly reduces the amount of data in the image, while preserving the most important structural features of that image. Canny Edge Detection is considered to be the ideal edge detection algorithm for images that are corrupted with white noise. For a more in depth introduction, see the Canny Edge Detection Tutorial .
The Canny Edge Detector worked like a charm for Seeing Using Sound. We used a Matlab implementation of the Canny Edge Detector, which can be found at (External Link) . Here is an example of the results of filtering an image with a Canny Edge Detector:
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