What JAR does
JAR repairs JPEG photos that open, but look broken. When a few bytes of a photo go missing or get damaged, everything after that point goes wrong: the rest of the picture slides sideways, turns grey, or changes colour. The photo isn’t lost. The picture data is still there; it’s just out of place. JAR puts it back.
A JPEG is built from small tiles, stored one after another like text on a page. Damage knocks the tiles that follow out of line. JAR finds each spot where that happens, works out how far the picture moved, shifts it back and fixes the colour. It does this for every damaged spot in the photo, automatically.
Typical damage JAR repairs:
* the bottom part of the photo is grey or a single colour;
* the picture breaks into bands that are shifted sideways;
* from some point on, the colours are wrong (too pink, too green, too dark);
* photos recovered from a damaged card, USB stick or drive that look “glitched”, including photos recovered with PhotoRec, Recuva, Disk Drill and similar tools;
* photos with chunks of other data mixed in, or cut off at the end;
* photos whose header is damaged, using an intact photo from the same camera as a reference.
Attachment:
jar-before-after.gif [ 176.19 KiB | Viewed 245 times ]
https://www.disktuna.com/jar-jpeg-auto-repair/
