recovering image data

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I have created a .bmp image by using the bitmap class.
Then I have set it's ARGB Values .
I have then saved the bitmap image to disk by using jpeg format
save("s.jpg",imageformat.jpg)
Now it is obvious that the ARGB values of bitmap image are changed

Is there any method to recover the original bitmap pixel data after compressing the image to jpeg format.
PLZ Help Me:-O

Posted 13-Oct-10 2:46am

Be Yourself

Updated 13-Oct-10 2:47am

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CPallini · Answer 1 · 2010-10-13T02:51:00

Solution 1

Well, lossy compression is... "lossy".

:)

Posted 13-Oct-10 2:51am

CPallini

Comments

Be Yourself 13-Oct-10 8:52am

Cant we read the header of jpg file to recover the original data

Be Yourself 13-Oct-10 8:53am

Because I think the header contains the compression ratio for image.

CPallini 13-Oct-10 8:59am

You may load the image and then save it as bitmap. That way you get again ARGB values, anyway lost info, is lost.