I have to make an android application that allows me to detect the outline of a card with the help of the camera and then take the image, Do you know if there is a library or an example that can help me make this app?
Thanks for answering. Greetings.
OpenCv is a library for image processing and artificial vision, it is compatible with Android, maybe it can help you. Good luck.
With OpenCV you can put artificial vision elements like the one you indicate. First you will have to apply a filtering to the image, and then apply an edge detection algorithm.
Eye, it is not the panacea, it is a complicated task, and it will depend on illumination, contrast, etc.
If it is correct, what I think is that you want to detect an Sd card (if it is not corrected) if that is because you do not use the environment.getExternalStorageDirectory () method or another environment method with External indication (You can find it on the official android page developers) to help you because I think there is another one that is one that serves as to detect and the one I gave you is to look for a Sd route and save or copy files.