Is there anything like a 'ScanDisk' for JPEG images?

Gary Edstrom

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Dec 27, 2009, 9:00:35 AM12/27/09

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I recently recovered some deleted photos from a flash chip for my sister
who had accidentally deleted some VERY important pictures. I used
'Image Rescue 3' from Lexar. Of course, along with the good images that
were recovered were some that were only partially recoverable. Those
were easy to spot afterwards. There were some others, however, that
show up as perfect pictures, but have some outrageous file sizes. For
example, she took a number of pictures at 640x480 resolution. A few of
these pictures were recovered as 19Meg+ files! Apparently, the recovery
program added a lot of junk beyond the end of the picture data. The
average size for these pictures should be about 160k. I am looking for
a utility that would allow me to trim these pictures down to their
proper size and to check for any other inconsistencies in the files.

Thanks, Gary

Bruce Uttley

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Dec 27, 2009, 10:19:47 AM12/27/09

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In article <mnpej5d63999adhop...@4ax.com>,

I'd suggest IrfanView and it's JPG_Transform plugin that supports
lossless JPG operations. One of the transformation options is
"None (can be used for optimizing and cleaning)". I've used it
for years to reduce the size of jpg libraries.

You can download IrfanView and it's plugins at:
www.irfanview.com

ray

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Dec 27, 2009, 11:06:19 AM12/27/09

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I've not faced that particular problem, but one of the first things I'd
try would be to load the photos into any photo editor and do a 'save as'
- with luck it will save the initial portion which corresponds to the
actual photo. As a matter of fact, you'll likely see some sort of error
message when you load it - indicating that an EOF occured before the
actual end of the data.

Please note that the purpose of 'scandisk' is to do just that - scan a
disk. What you seem to be asking for is 'scan a file'. Things may improve
or not - may actually get worse, but there is no reason you can't run
scandisk or equivalent on the media card once you've attached it to the
computer.

Paul Furman

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Dec 27, 2009, 5:26:50 PM12/27/09

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Interesting suggestion and it might work. I just tested and it actually
made a file larger... from 11.6MB to 12MB. Odd!

Worst case scenario, the OP could do screen captures, printscreen/paste.
I would first try re-saving with various programs

--
Paul Furman
www.edgehill.net
www.baynatives.com

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Ray Fischer

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Dec 28, 2009, 2:37:14 AM12/28/09

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Gary Edstrom <GEds...@PacBell.Net> wrote:
>Is there anything like a 'ScanDisk' for JPEG images?
>
>I recently recovered some deleted photos from a flash chip for my sister
>who had accidentally deleted some VERY important pictures.

A good time to tell everybody to BACKUP YOUR IMPORTANT FILES! Shit
happens. Memory cards get stolen, damaged, or erased. Hard disks
fail. Computers crash. If it's important to you then make copies.
Now.

--
Ray Fischer
rfis...@sonic.net

Gary Edstrom

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Dec 28, 2009, 8:50:55 AM12/28/09

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Thanks for the suggestion. But I have discovered that I already have a
suitable tool: ThumbsPlus. I created a batch file that does nothing
more than to resave the currently selected files using the original data
without any processing. All of my 19+ meg files have been reduced to
their proper size.

Gary