Specifies available compressions of acquired images.
| Member | Value | Description |
|---|---|---|
| TWAINIMAGECOMPRESSION_BitFields | 12 | BitFields |
| TWAINIMAGECOMPRESSION_Group31D | 2 | Group31D |
| TWAINIMAGECOMPRESSION_Group31DEol | 3 | Group31DEol |
| TWAINIMAGECOMPRESSION_Group32D | 4 | Group32D |
| TWAINIMAGECOMPRESSION_Group4 | 5 | CCITT Group 4 |
| TWAINIMAGECOMPRESSION_Jbig | 8 | JBIG |
| TWAINIMAGECOMPRESSION_Jpeg | 6 | JPEG |
| TWAINIMAGECOMPRESSION_Lzw | 7 | LZW |
| TWAINIMAGECOMPRESSION_None | 0 | No compression |
| TWAINIMAGECOMPRESSION_Packbits | 1 | Packbits |
| TWAINIMAGECOMPRESSION_Png | 9 | PNG |
| TWAINIMAGECOMPRESSION_Rle4 | 10 | Rle4 |
| TWAINIMAGECOMPRESSION_Rle8 | 11 | Rle8 |