Adds background and watermarks to images:
Put your watermark and background ('Watermark.png' and 'Background.png') in folder with 'Watermark.exe', create 'Output' folder and simply drag&drop images on 'exe' file, you can find results in 'Output' folder.
Link to dll file (put it in program folder): https://nofile.io/f/O4b0Ofjy0p6/opencv_world341.dll Or just download opencv_world341.dll from openCV site.