- published: 15 May 2014
- views: 549948
JBIG is a lossless image compression standard from the Joint Bi-level Image Experts Group, standardized as ISO/IEC standard 11544 and as ITU-T recommendation T.82. It is widely implemented in fax machines. Now that the newer bi-level image compression standard JBIG2 has been released, JBIG is also known as JBIG1. JBIG was designed for compression of binary images, particularly for faxes, but can also be used on other images. In most situations JBIG offers between a 20% and 50% increase in compression efficiency over the Fax Group 4 standard, and in some situations, it offers a 30-fold improvement.
JBIG is based on a form of arithmetic coding developed by IBM (known as the Q-coder) that also uses a relatively minor refinement developed by Mitsubishi, resulting in what became known as the QM-coder. It bases the probability estimates for each encoded bit on the values of the previous bits and the values in previous lines of the picture. JBIG also supports progressive transmission, which generally incurs a small overhead in bit rate (around 5%).
Silver cans and bronze coloured dirt
Silver cans and bronze coloured dirt
Things ain't so soon near the parking lot moon
Silver cans and bronze coloured dirt
She said let's call it quit
Let's not call it the end of the world
Call it what you will, I'm heartbroken still
Words are just words
Road salt on I 95
Road salt on I 95
Forget what your told, it's bound to get cold
Road salt on I 95
I call today a disaster
She calls it December the 3rd
Call it what you will, I'm heartbroken still
Words are just words
On a brief and star stricken night
On a brief and star stricken night
I called her name on the road from Spokane
On a brief and star stricken night
I hear a blue heaven crying
Some folks just call it a bird
Call it what you will, I'm heartbroken still
Words are just words
Some call an end a beginning
For right now, they'll go unheard
Call it what you will, I'm heartbroken still