TIFF Tag Threshholding
| IFD |  | Image |
|---|---|---|
| Code | 263 (hex 0x0107) | |
| Name | Threshholding | |
| LibTiff name | TIFFTAG_THRESHHOLDING | |
| Type | SHORT | |
| Count | 1 | |
| Default | 1 (No dithering) |
Description
For black and white TIFF files that represent shades of gray, the technique used to convert from gray to black and white pixels.
The specification defines these values:
1 = No dithering or halftoning has been applied to the image data.
2 = An ordered dither or halftone technique has been applied to the image data.
3 = A randomized process such as error diffusion has been applied to the image data.
LibTiff defines these values:
THRESHHOLD_BILEVEL = 1;
THRESHHOLD_HALFTONE = 2;
THRESHHOLD_ERRORDIFFUSE = 3;