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Photo Restoration Repairing damaged photos

Histograms

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  #1  
Old 01-03-2002, 07:36 PM
Sally Sally is offline
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Histograms

Histograms.

Why does the histogram change on a photo posted to this site?

Is it to prevent the photo being used commercially?

That would be a good reason.

Here is an example of one posted by me and below it, the same image down loaded

Sally
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File Type: jpg histagram.jpg (16.3 KB, 48 views)
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  #2  
Old 01-03-2002, 07:55 PM
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DJ Dubovsky DJ Dubovsky is offline
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Sally
Clarification: Do you mean the histogram of your original is the first one and the second one is a histogram of your photo after you submitted it to this site and downloaded it again?
Never realized that before so it's all new to me.
DJ
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  #3  
Old 01-03-2002, 08:57 PM
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Doug Nelson Doug Nelson is offline
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Make sure you're comparing the jpg that was submitted, and not your original work file. Let me know which challenge this was for and I'll look into it.
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  #4  
Old 01-03-2002, 09:37 PM
Sally Sally is offline
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Histogram with samples

This wasn't a challenge, I no longer do them because of this problem.

I have enclosed a copy of both pics with their histograms with this posting.

Sally
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File Type: jpg histogram.jpg (48.6 KB, 47 views)
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  #5  
Old 01-03-2002, 10:09 PM
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Ed_L Ed_L is offline
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Sally,

I'm not sure I understand you. Are you saying that the histogram changes simply from sending it in? Or does it change *after* you change the image size and save to jpg?

Ed
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  #6  
Old 01-04-2002, 12:43 AM
Sally Sally is offline
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histogram

Yes I’ve got that histogram with every image I've down loaded from this site, with one exception.

I haven’t looked at a lot of the site because we have a very slow connection.

Sally
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  #7  
Old 01-04-2002, 01:04 AM
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CJ Swartz CJ Swartz is offline
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Sally,

IF you're saying that the histogram is different when you download the same file that you uploaded to this website, to the extent of getting the "comb" effect -- that does not happen when I download files from here.

This may be a case for Mr. RetouchPRO himself.
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  #8  
Old 01-04-2002, 01:35 AM
Sally Sally is offline
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Yes CJ, that is exactly what I'm saying. Perhaps it is because I have PC and not a mac. Sally
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Old 01-04-2002, 06:08 AM
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I'm a bit at a loss here. If it's not part of a Challenge, where are the pictures uploaded to be viewed? As attachments? The Archives?

I'm feeling kind of dumb here, lend me a hand.
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  #10  
Old 01-04-2002, 07:16 AM
Sally Sally is offline
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Spots and scans

Sorry for the confusion.

I wrote a piece on scanning textured originals and included a close up of a before and after.

Some one asked me to show the whole photo restored. By mistake I posted it in the “spots, I can't get the spots out” thread.

From this attachment I down loaded my own image. That is how I was able to demonstrate the different histograms.

I hope this is clearer and not more confusing.

Sally
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