First, photo fragment recovery
Mobile phone shot deleted after the fragment recovery, there is no good algorithm, can only use straight spelling.
If the sequentially stored files are easier to recover, it is generally possible to recover from the space that has been occupied and the space that may be occupied. The difficulty exists in this situation: After the photo has been deleted, and other files have been deleted space is released (may be human deletion or automatic removal of mobile phone software), then to remove the deleted space is more difficult, only according to the characteristics of the file to try the combination.
If the files are stored in a non-sequential order, it is difficult at present, if combined with picture stitching may be solved.
Second, video fragment recovery
Mobile phone shooting MP4 video deleted after the fragment recovery, this algorithm can be achieved, the effect of recovery is also good.
Regardless of whether sequential or non-sequential storage can be recovered, the recovery effect of non-sequential storage is, of course, well restored without sequential storage.
MP4 Video fragment recovery also exists when the file is deleted, and other files are deleted space is released to cause interference, the video files are usually very large, so the full recovery time consuming and energy.
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