ImageGear v26.3 - Updated November 9, 2022
Developer Guide / File Formats and Compressions / Compressions / CCITT Group 3 Compression
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CCITT Group 3 Compression
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Full Name CCITT Group 3
Compression ID ImGearCompressions.CCITT_G3 = 3
ImageGear Assembly ImageGear.Core Assembly
Bit Depth 1
File Formats PDF, TIFF

Comments

This is a 1-D version of the CCITT Group 3 compression scheme. It uses a static table of values to assign codes to run lengths. Frequently occurring run lengths are given smaller codes. (The most frequent are usually black runs of 2 or 4 pixels).