Given an image, say a colored 500x500 px 72dpi, with visible watermarks in it. I want to detect if the image contains some watermark or not. As a follow up I would like to remove that too.
I am quite new to Image Processing and would like to know what all methods/techniques exists in recognizing watermarks in an image. There was not much that I could find related to this on Stack Overflow also. There was just this link Removing watermark out of an image in opencv, but it is not a generic approach.
Any guidance is much appreciated.
I have attached a sample pic, from google search. We could see the watermark "Preview" in the image. Any possible approaches to detect it?