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Learning OpenCV 3 Application Development by Samyak Datta

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Chapter 5. Image Derivatives and Edge Detection

In the very first chapter, we made a distinction between the terms image processing and computer vision. We made it clear that the outputs of the operations that fall under the umbrella of image processing are images themselves. So, an image-processing operation will take an image as input and produce yet another image as its output. Essentially, all the techniques that we have covered so far are image-processing operations: grayscale transformations, image filtering, and image thresholding. Computer vision tasks are slightly more interesting. The inputs for computer vision algorithms are again, images. But, the outputs are what we call symbols. These symbols represent some form of semantic information ...

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