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POImage Comparing and return Percentage
 

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    <pre><code>int DiferentPixels = 0; Bitmap first = new Bitmap("First.jpg"); Bitmap second = new Bitmap("Second.jpg"); Bitmap container = new Bitmap(first.Width, first.Height); for (int i = 0; i &lt; first.Width; i++) { for (int j = 0; j &lt; first.Height; j++) { int r1 = second.GetPixel(i, j).R; int g1 = second.GetPixel(i, j).G; int b1 = second.GetPixel(i, j).B; int r2 = first.GetPixel(i, j).R; int g2 = first.GetPixel(i, j).G; int b2 = first.GetPixel(i, j).B; if (r1 != r2 &amp;&amp; g1 != g2 &amp;&amp; b1 != b2) { DiferentPixels++; container.SetPixel(i, j, Color.Red); } else container.SetPixel(i, j, first.GetPixel(i, j)); } } int TotalPixels = first.Width * first.Height; float dierence = (float)((float)DiferentPixels / (float)TotalPixels); float percentage = dierence * 100; </code></pre> <p>With this portion of Code im comparing 2 Images foreach Pixels and yes it work's it return's Percentage of difference ,so it compares each Pixel of First Image with pixel in same index of Second Image .But what is wrong here ,i have a huge precision maybe it should not work like that ,the comparison ,and maybe there are some better algorithms which are faster and more flexible . So anyone has an idea how can i transform the comparison ,should i continue with that or should i compare Colors of Each Pixels or ....</p> <p>PS : If anyone has a solution how to make Parallel this code ,i would also accept it ! Like expanding this to 4 Threads would they do it faster right in a Quad Core?</p>
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    1. COHow large is the image? It might not be worth parallelizing the code unless they're pretty big or you have a lot of them.
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    2. CO@Matt Image size is not the concern ,but the case is it will compare lot of images continuously ,like 100 !That's bothers me.
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    3. COthat seems like a good candidate for parallelizing the code then
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