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I’d like to detect if a logo image in user’s camera view – for example if the logo of StackOverflow was printed on a paper and viewed through camera. Or for less complicated approach let’s say that I’d like to detect it in a bitmap. I’d like to recognize if one specific logo – it’s possible to hardcode it to the app.
Is it even possible with using of open-source libraries like OpenCV or would it require lots and lots of man-hours to implement?
This is possible with opencv but might still require lots and lots of man-hours depending on your definition of lots and lots.
On a more serious note: start at template matching. If that is not enough for you perhaps SIFT features are. Also, search this site, there are some pretty good discussions about stuff like this to be found.