how to use opencv to make matlab code android compatible

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I have an image processing code in matlab containing its inbuilt functions like graythresh(), bwareaopen(),etc. I need to make that code processable on a smartphone(preferably with android os).The code also contains methods of image segmentation like Otsu. It would be of great help if you could suggest me the best and easy way to do that. I know elementary Java, but I do not know much about android programming.