MDI
From Just Solve the File Format Problem
(Difference between revisions)
(→Compression) |
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== Compression == | == Compression == | ||
| − | The compression schemes are reportedly | + | The compression schemes are reportedly defined as follows: |
{| class="wikitable" | {| class="wikitable" | ||
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! Compression scheme | ! Compression scheme | ||
|- | |- | ||
| − | |34718 || | + | |34718 || Binary Level Codec (BLC) |
|- | |- | ||
| − | |34719 || | + | |34719 || Progressive Transform Codec (PTC) |
|- | |- | ||
| − | |34720 || | + | |34720 || Vector |
|} | |} | ||
| − | + | Other sources give the following, but 34719 and 34720 may have been accidentally swapped. | |
{| class="wikitable" | {| class="wikitable" | ||
| Line 32: | Line 32: | ||
! Compression scheme | ! Compression scheme | ||
|- | |- | ||
| − | |34718 || | + | |34718 || MODI_BLC |
|- | |- | ||
| − | |34719 || | + | |34719 || MODI_VECTOR |
|- | |- | ||
| − | |34720 || | + | |34720 || MODI_PTC |
|} | |} | ||
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* [[Wikipedia:Microsoft Office Document Imaging]] | * [[Wikipedia:Microsoft Office Document Imaging]] | ||
* [http://www.iana.org/assignments/media-types/image/vnd.ms-modi Media type registration] | * [http://www.iana.org/assignments/media-types/image/vnd.ms-modi Media type registration] | ||
| + | * Possibly related: [http://research.microsoft.com/apps/pubs/?id=101991 Fast Progressive Image Coding Without Wavelets] | ||
[[Category:Microsoft]] | [[Category:Microsoft]] | ||
[[Category:TIFF]] | [[Category:TIFF]] | ||
Revision as of 14:52, 5 October 2013
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 |
