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JBIG (Joint Bi-level Image Experts Group)

JBIG (Joint Bi-level Image Experts Group) is a group of experts that is producing standards for bi-level image coding. Officially, JBIG is the ISO / IEC JTC1 SC29 Working Group 1, which is also responsible for the JPEG standard for a suite of compression algorithms used to produce image files that are supported by Web browsers and typically used for complex images such as photographs.

JBIG has produced a standard for the compression of a bi-level image -- an image in which only one bit is used to express the color value of each pixel . This standard can also be used for coding greyscale image s and color images with limited numbers of bits per pixel. JBIG is intended for images sent using facsimile encoding and offers significantly better compression than Group 3 and Group 4 fax encoding.

The initial standard is known as JBIG1. A later, improved standard is known as JBIG2.

This was last updated in March 2011

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