MDI
From Just Solve the File Format Problem
MDI is a proprietary image format used by Microsoft Office Document Imaging.
It is almost identical to TIFF, but has a different header, and may use one of several undocumented compression schemes.
Identification
Files begin with bytes 45 50 2a 00.
Compression
The compression schemes are reportedly defined as follows:
| Code | Compression scheme |
|---|---|
| 34718 | Binary Level Codec (BLC) |
| 34719 | Progressive Transform Codec (PTC) |
| 34720 | Vector |
Other sources give the following, but 34719 and 34720 may have been accidentally swapped.
| Code | Compression scheme |
|---|---|
| 34718 | MODI_BLC |
| 34719 | MODI_VECTOR |
| 34720 | MODI_PTC |
