Quote from: bitmar on January 21, 2013, 01:14:20 PM

Quote from: PuertoLibre on January 21, 2013, 01:02:11 PM

You guys/gals do not know how to use that tool properly.

You folks don't even know what a JPEG matrix or quantization is nor how the tool even detects changes in an image.

There is nothing wrong with the tool. There is only bad interpretation(s) and bad application(s) of this tool without understanding what it compares.

(I used it several years ago (2006 -2008) when the hacker who made (and introduced) this tool first came out with it. I read the "white" papers on some of his theory and how they detect changes.

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Please don't make fools of yourselves by not knowing how to use the tool properly....

I wrote:

Quote

This photo was manipulated

This is not the original photo, you know it. I do not know what it was manipulated , It is possible that only resize. No exif also indicates manipulation.

I am not outright discouraging you.

I am just pointing out that you are using that tool in the wrong way without knowing how it's detection algorithms work and what they are intended to show.

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You should start off with a program that can compare pixels to pixels. (not through jpeg quantification and matrix mis-matches).

I'll help you out:

http://www.abonsoft.com/pd_imagecompare.html

This is a very crappy but simple pixel level compare software. It should point out what parts are actually different if any. (without the other method which required a better understanding of what the tool actually does or how to interpret the results)