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AnswerRe: file uplode Pin
Sandeep Mewara28-Mar-13 20:04
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Questionneed coding for my project Pin
rengaramu r28-Mar-13 8:43
rengaramu r28-Mar-13 8:43 
AnswerRe: need coding for my project Pin
Marco Bertschi28-Mar-13 9:06
protectorMarco Bertschi28-Mar-13 9:06 
GeneralRe: need coding for my project Pin
rengaramu r28-Mar-13 9:38
rengaramu r28-Mar-13 9:38 
GeneralRe: need coding for my project Pin
Jasmine250128-Mar-13 12:58
Jasmine250128-Mar-13 12:58 
rengaramu r wrote:
s'nt enough for me to comparing images bcoz it's too simple

for my project i need complexity for my project to compring images if u knw help me


Comparing two images for equality only will always be simple - in fact, simpler than what you have already. Since you're only interested in equality, you should stop and return false as soon as you find one pixel different.

Now, if you're talking about image similarity, that can be very complex, in fact complex enough for graduate theses and Google R&D. Google has tried for many years to understand image similarity, and they do a pretty good job, but that is getting into a seriously complex area, and frankly, you don't seem to be ready for that.

However, you should be able to examine all the pixels, compare their distance away from each other (in terms of color values), then average those distances together, and it will give you a SIMPLE correlation value of how similar the images are. The code for that is simple...

pseudo
foreach (px1, px2 in image) {
    distance += SQRT( ((px1.red - px2.red)^2) + ((px1.blue - px2.blue)^2) + ((px1.green - px2.green)^2) )
    numPix++;
}

correlation = distance/numPix;


Lower numbers indicate similarity. However, there are many problems with this algorithm, such as the fact that two pictures of the same thing, with a row of pixels added to one, will have a very high number, simply because the pixels don't line up. Any human looks at the two images and says "those are the same" but the computer fails at that.

Google and others now have image comparison tech that will give you a result like "those two images are both of a human face" and even go so far as "yes, there are faces in both images, and yes they are the same person" - right? That's what we call facial recognition software, but at its core that technology is image comparison and computer vision stuff.
GeneralRe: need coding for my project Pin
rengaramu r28-Mar-13 17:28
rengaramu r28-Mar-13 17:28 
GeneralRe: need coding for my project Pin
Jasmine250129-Mar-13 6:09
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AnswerRe: need coding for my project Pin
jkirkerx28-Mar-13 10:09
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QuestionDataTable: Query a programmatically generated DataTable Pin
Sumit Kathuria28-Mar-13 8:16
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AnswerRe: DataTable: Query a programmatically generated DataTable Pin
David Mujica28-Mar-13 8:49
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QuestionUsers can't get to my new web site Pin
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QuestionASP.net MVC 4 Panel visible true/false depends on the condition Pin
VishwaKL27-Mar-13 22:27
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AnswerRe: ASP.net MVC 4 Panel visible true/false depends on the condition Pin
Rohith Reddy Vadiyala28-Mar-13 21:16
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QuestionBest URL/File Structure Practices? Pin
Dralken27-Mar-13 19:28
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Marco Bertschi28-Mar-13 9:12
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Questionmodalpopupextender with dynamic checkboxlist Pin
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Questionhow to get selected item text in razor dropdownlist. Pin
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AnswerRe: how to get selected item text in razor dropdownlist. Pin
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QuestionHow to use databindings class in web application? Pin
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