Short description of Image comparison algorithm 1.1: We are proud to present you our unique image comparison algorithm implemented as standalone dll file. It has only one exported function with two bitmap pointers in and similarity percentage out. Can work with many programming languages including Delphi, Visual C++, C#, VB and VB.NET. We can also provide you with the modified DLL. It can precalculate image hash (768 bytes) and you can use these hashes for comparison then.