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Convolutional Neural Networks (CNN, also called ConvNets) are a tool used for classification tasks and image recognition. The name giving first step is the extraction of features from the input data.

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Should we keep all channels when doing image classification?

Well, it depends on your images and how you want to classify them. If we take a really basic example, if you want to classify images by their color, you obviously should keep all 3 channels. In the …
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