Phil, I doubt that you can do much with these images other than extract the thumbnail which is obviously quite small.
I used jpeg snoop (http://www.impulseadventure.com/photo/jpeg-snoop.html) to examine file number 4 and there are markers in the file that should not be there. Perhaps you can use a hex editor to fix it, I have no idea. Sorry, Partha On Sat, Jan 4, 2014 at 7:23 PM, Phil <skegg...@gmail.com> wrote: > Hi Partha/all > > Ive uploaded/shared 4 pics to dropbox... > > 0001 is ok > 0002 is 75% is ok > 0003 is 5% ish ok > 0007 is just another 5% ok file > > looking though the thumbnails more closely, even some of them seem to have > corruption, ie pink lines though them, that look to be old ascii symbols, > but cant see that clearly, as they thumbs. > > Ill try the Exif extraction tool in a bit, just to try and get something > at least out of the pictures. > > https://www.dropbox.com/sh/dp0nsvn1jn9sons/E6Erp9vJP- > > > Cheers > Phil > > On 05/01/2014 00:09, Partha Bagchi wrote: > >> Can you post an example of your corrupted jpeg file? >> >> >> On Sat, Jan 4, 2014 at 4:53 PM, Elle Stone >> <ellest...@ninedegreesbelow.com>wrote: >> >> On 01/04/2014 04:27 PM, Phil wrote: >>> >>> Hi All >>>> >>>> Apologies to all for not starting a new thread, i have been an avid >>>> reader of the emails for a while now, and read most of what people put >>>> here, so sorry Michael & Jay who pointed that out to me.. >>>> >>>> ill try and answer all questions about whats what etc. >>>> >>>> I believe the original pictures, that were taken in 2011, were taken >>>> directly of the camera via USB cable, these were then stored on my >>>> friends computer, and these were corrupted. I didnt notice it much at >>>> first, as she asked me to look at something different (spamware), but >>>> her screen saver, which must have read the pic folder, showed pictures, >>>> that looked to be corrupted, i initially thought that these were to big >>>> for the screen saver to handle, and dismissed them. >>>> >>>> She still had the memory card, and the thumbnails, still showed fine on >>>> camera preview screen, so she thought they were safe. But luckly, she is >>>> not an avid photographer, and didnt even wipe the card! After that, i >>>> Borrowed the card, and used photorescue (it saved me once so i was more >>>> than happy to pay for it after my canon 350d corrupted a card that was >>>> not quick enough), and it again found the same pictures corrupted. >>>> >>>> So then began my quest for finding information/utilities to undo/correct >>>> the files. >>>> >>>> The Card reader is my own, that i ran the software recovery on, so with >>>> the fact that since she has bought a new memory card, and it worked >>>> fine, i assume its a faulty card? so i took a copy of what she had. >>>> >>>> DSC0001.jpg seems to be fine, this is the first card picture on the >>>> card, i dont know if any were taken before, ie new card or new camera, >>>> but i could find out if needed. DSC0002.jpg, that is ooo 75% ok, but >>>> after that, all the remaining 221 pictures are damaged, all only showing >>>> about 5%. >>>> >>>> I ran imagemagick "mogrify -strip name-of-file.jpg", that ella >>>> suggested, and it gave me a comment unsupported marker type 0x3a >>>> 'dsc0002.jpg' @warning/jpeg.c/jpegerrorhandler/313. >>>> >>>> I did try loading into Gimp 2.8.2 on debian 7.2 after the imagemagick >>>> command, and it also said this message (i thought i had tried it on >>>> linux but obviously not), OSX 10.6 running gimp 2.8.3 didnt give the >>>> same error message, and im sure windows 7 running gimp 2.8.6 (from >>>> memory) also didnt give the handler error. >>>> >>>> From what little research that i have done since, the error is quite a >>>> complicated one. Something to do with data strips ending in FF D9 in a >>>> hex editor. The 0001 file has 3 of these, the other 2 that i have tried >>>> only have 1 reference (from searching the file). >>>> >>>> Ella's other suggestion for converting from jpg to png, i entered >>>> "convert DSC0002.jpg test.png" and it converted the image, with the >>>> corruption, with no error's reported, also tried dsc0001 and it >>>> converted fine (but the original image was ok). >>>> >>>> Im assuming meta data is not transfered to a PNG, ill be honest, i dont >>>> know much about them, as most of my work is saved back out as JPEG's >>>> etc, apart from when exporting from inkscape, which prefers PNG's/Tiffs >>>> etc. >>>> >>>> >>>> Hmm, well, it does sound like file damage rather than just a case of >>> messed up metadata or a version of jpeg that imagemagick can read and >>> other >>> image editors can't. Perhaps someone else can help. I don't know anything >>> at all about recovering damaged image files. >>> >>> If the thumbs are intact, this page: >>> http://ninedegreesbelow.com/photography/exiftool-commands.html#extract >>> tells how to use exiftool to extract the thumbnail as a separate image >>> file. As always, work on a copy of the original. >>> >>> Good luck! >>> >>> Elle >>> _______________________________________________ >>> gimp-user-list mailing list >>> List address: gimp-user-list@gnome.org >>> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list >>> List archives: https://mail.gnome.org/archives/gimp-user-list >>> >>> _______________________________________________ >> gimp-user-list mailing list >> List address: gimp-user-list@gnome.org >> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list >> List archives: https://mail.gnome.org/archives/gimp-user-list >> > > _______________________________________________ > gimp-user-list mailing list > List address: gimp-user-list@gnome.org > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list > List archives: https://mail.gnome.org/archives/gimp-user-list > _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
