Convolutional Neural Networks and Deep Learning

Hey guys ! I just finished my image processing project, which includes features extraction and retrieval. For the time being, I have used only basic and slightly inefficient algorithms,and now I want to use Intelligent algorithms, starting with CNN. I have started research. But to speed up, can someone give me a brief about what it is, how its used for feature extraction and how it is implemented in matlab ? I would be greatly thankful !


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