Picture forgery includes copying and processing pictures in other people's or their own papers, but it is difficult for readers to see through them. These false pictures distort the experimental results, stir up the academic circles, and make many scholars hate them.

In the previous paper duplicate checking system, only the text part can be copied, but not the picture part. Therefore, apart from plagiarism, the most common reason for withdrawing the manuscript is that the picture is "wrong". At present, a large number of false maps have been found only by manual inspection.