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TIFF Tag Reference

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TIFF Tag Threshholding

IFDImage
Code263 (hex 0x0107)
NameThreshholding
LibTiff nameTIFFTAG_THRESHHOLDING
TypeSHORT
Count1
Default1 (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;

Related tags

CellWidth
CellLength