Comparing two images without compromising performance.

During automation, I was given a task to compare two images. The catch here is to do it with fast running code which do not compromise performance.

Here I have found and tweaked a little code snippet. It is written in c#.

In this code, we are converting two Image objects into Base64 String. By Comparing the Base64 string together , we will know that whether images are same. The Code is below.

******start of the code*********

public static bool ImageCompareString(Image firstImage, Image secondImage)

{

var ms = new MemoryStream();

firstImage.Save(ms, ImageFormat.Png);

String firstBitmap = Convert.ToBase64String(ms.ToArray());

ms.Position = 0;

secondImage.Save(ms, ImageFormat.Png);

String secondBitmap = Convert.ToBase64String(ms.ToArray());

if (firstBitmap.Equals(secondBitmap))

{

return true;

}

else

{

return false;

}

}

*****end of code********