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  2. Photo recovery - Wikipedia

    en.wikipedia.org/wiki/Photo_recovery

    Most of these techniques fail in the presence of file system fragmentation. Simson Garfinkel showed that on average, 16% of JPEGs are fragmented, [1] which means on average 16% of JPEGs are recovered partially or appear corrupt when recovered using techniques that cannot handle fragmented photos. Header-footer carving, along with header-size ...

  3. Digital photograph restoration - Wikipedia

    en.wikipedia.org/wiki/Digital_photograph_restoration

    Digital photograph restoration uses image editing techniques to remove undesired visible features, such as dirt, scratches, or signs of aging. People use raster graphics editors to repair digital images, or to add or replace torn or missing pieces of the physical photograph. Unwanted color casts are removed and the image's contrast or ...

  4. Data corruption - Wikipedia

    en.wikipedia.org/wiki/Data_corruption

    The adjacent image is a corrupted image file in which most of the information has been lost. Some types of malware may intentionally corrupt files as part of their payloads , usually by overwriting them with inoperative or garbage code, while a non-malicious virus may also unintentionally corrupt files when it accesses them.

  5. Data recovery - Wikipedia

    en.wikipedia.org/wiki/Data_recovery

    The most common data recovery scenarios involve an operating system failure, malfunction of a storage device, logical failure of storage devices, accidental damage or deletion, etc. (typically, on a single-drive, single-partition, single-OS system), in which case the ultimate goal is simply to copy all important files from the damaged media to another new drive.

  6. Fix problems reading or receiving AOL Mail

    help.aol.com/articles/fix-problems-reading-or...

    Ask the sender to resend the picture using JPG or GIF file format. Check the attachments. The image sent may have been sent as an attachment rather than an embedded image. If the image is sent as an attachment, you'll need to download it before you can view the image. Reset your web settings

  7. PhotoRec - Wikipedia

    en.wikipedia.org/wiki/PhotoRec

    PhotoRec is a free and open-source utility software for data recovery with text-based user interface using data carving techniques, designed to recover lost files from various digital camera memory, hard disk and CD-ROM.