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Does anyone know any library or practice to detect a point in the image captured with the device camera? Ex. a white paper with a black dot, then the camera detects this point and gives the coordinates of the screen (X and Y).
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A routine that works for the image captured by the camera, in fact, works for any image. In this routine you would say which color of the background and it would go through all the pixels of the image until finding the ones that are different. http://stackoverflow.com/questions/22391353/get-color-of-each-pixel-of-an-image-using-bufferedimages
– Reginaldo Rigo
@Reginaldorigo vc thinks this routine adapts to real-time camera usage? like reading a qr code.
– Emerson Barcellos
Yes. Can be done. See this example: https://play.google.com/store/apps/details?id=com.tsang.alan.distancemeter
– Reginaldo Rigo