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hi,
i have two images and i need to compare them then i need to get all pixels of first image which are not same in second image.
e.g.
if half of image 1 is same as image 2 so i want the half of image 1 which is different from image 2.
Posted
Updated 7-Jun-14 16:55pm
v2
Comments
Dave Kreskowiak 7-Jun-14 16:59pm
   
Permission granted! Please, proceed.

Or did you forget to ask a question?
ZurdoDev 7-Jun-14 21:48pm
   
You'll need to search for a 3rd party control to do that. I do not believe .Net can do that built-in.
gggustafson 7-Jun-14 22:14pm
   
Are the images the same size? Are they color or B/W?
   
Did you notice that your problem is not fully defined. You did not define what to do with matching pixels and different pixels.
—SA

1 solution

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Solution 1

Please see my comment to the question.

One of the way to perform necessary calculations is using System.Drawing, more exactly:
http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits.aspx[^].

There are some code samples on the pages of each of these methods, just to understand how to use them. Most important thing here is not to use GetPixel/SetPixel as those method would work prohibitively slowly for your purpose.

—SA
   
Comments
Mohammed Nabeel Khan 9-Jun-14 15:47pm
   
thanx Sergey Alexandrovich but i need to do it faster. i know i can do it with bitmapData class much faster but how to get the difference ? should i compare every pixel? isn't there any bitwise operation i can do with bytes like And or Nand?
Mohammed Nabeel Khan 9-Jun-14 15:58pm
   
Sir is there you peoples culture to degrade other people?
this is my third question and God knows that except for demotivating me, you your friends have not helped me.
With respect sir, i might not be a good programmer but i put my best efforts in it.
Well thanks for your demotivation, Sergey Alexandrovich.
M Nabeel Khan

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