Adaptive Watermark Based on Screen
Jiang Yi Du, Fan Xia · 2018
In this paper, we mainly introduce a new way to generate adaptive visible watermark in screen for reducing data leakage by screenshot, which can prevent some data leakage by screenshot and photos taken on screen then track the data path and who make the data leaked for preventing data leaked again. The first step is to get the whole screen as a image, then crop the picture properly which means crop the toolbar section at the bottom of screenshot. Second, image processing and image filter processing, then use edge search algorithm multiple times to find the best results. Third, calculating pixel connected areas then merging all character cells. We can get the word parts from the screen and it is the location for screen-watermarking. Finally, it generate adaptive watermark in the area.