Information technology - Lossy/lossless coding of bi-level images

Designation Number:
CSA ISO/IEC 14492:20
Standard Type:
National Standard of Canada - Adoption of International Standard
Standard Development Activity:
Reaffirmation
ICS code(s):
35.040.30
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

This Recommendation | International Standard1 defines methods for coding bi-level images and sets of images (documents consisting of multiple pages). It is particularly suitable for bi-level images consisting of text and dithered (halftone) data.

 

The methods defined permit lossless (bit-preserving) coding, lossy coding, and progressive coding. In progressive coding, the first image is lossy; subsequent images may be lossy or lossless.

 

This Recommendation | International Standard also defines file formats to enclose the coded bi-level image data.

 

Project need:

To review the Standard within the required 5 year period.

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