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

CSA Group
Standards Development Organisation:
Canadian Standards Association (operating as CSA Group)
Working Program:
View the CSA work program
Designation Number:
CSA ISO/IEC 14492
Standard Type:
National Standard of Canada - Adoption of International Standard
Standard Development Activity:
New Edition
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

This Recommendation | International Standard 1 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 align Canadian requirements with those of the respective international standards being proposed for adoption. To maintain alignment between Canadian information and communication technology standards and each respective international standard

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