ImageGear for C and C++ on Windows v19.1 - Updated
CCITT Group 3 Compression
User Guide > File Formats and Compressions > Compressions > CCITT Group 3 Compression

CCITT Group 3 Compression

Full Name CCITT Group 3
Compression ID IG_COMPRESSION_CCITT_G3 = 3
ImageGear Component Core
Bit Depth 1
File Formats BTR, EPS, Group 3, IBM IOCA, IBM MO:DCA, IMT, LV, NCR, Adobe PDF, Adobe PS, TIFF, RAW
ImageGear Platforms Support WIN32, WIN64, Unix, Unix64, .NET, .NET64, MAC

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).