Compare Images

[Wing]

Hi, well i need to compare to images and iv found a way but was wondering if there is any faster way to do it.. any way here is my code:

public static bool CompareImage(Image img1, Image img2)
{
    //Test to see if we have the same size of image
    if (img1.Size != img2.Size)
    {
        return false;
    }
    else
    {
        //Convert each image to a byte array
        System.Drawing.ImageConverter ic =
               new System.Drawing.ImageConverter();
        byte[] btImage1 = new byte[1];
        btImage1 = (byte[])ic.ConvertTo(img1, btImage1.GetType());
        byte[] btImage2 = new byte[1];
        btImage2 = (byte[])ic.ConvertTo(img2, btImage2.GetType());
        

        for (int i = 0; i < btImage1.Length; i++)
        {
            if (btImage1[i] != btImage2[i])
            {
                return false;
            }
        }
    }
    return true;
}