Chasys Draw IES Help:

File Formats - Chasys Draw Image, version 3

What is CD5?

CD5 is Chasys Draw IES's native image file format, which supports all the features provided by the suite. It is a binary tag-based container format for images and animations. Image data in CD5 files is losslessly compressed using a highly optimized adaptive proprietary multi-pass algorithm. The current version is 3 revision 31, and offers many enhancements over previous versions. Although CD5 is designed to be used as a working format (i.e. a format for storing work that is currently being edited or that may need to be modified later), it may be used for distribution because the policy is to support all versions of it in future versions, a policy that has been observed faithfully since 2001.


What features does CD5 offer?

CD5 supports all image semantics available in the Chasys Draw IES suite. A few of these are:

Feature Comments
Layers since ver. 3 rev. 01
Layer naming and notes since ver. 3 rev. 01
Multi-resolution since ver. 3 rev. 01
High Dynamic Range since ver. 3 rev. 01, currently not used
16-bit-per-channel Sampling since ver. 3 rev. 01, currently not used
Tag-based container format since ver. 3 rev. 00
Animation, frame-based since ver. 3 rev. 02
Metadata, including paths, text and other vector data since ver. 3 rev. 05
Full UNICODE and UTF-8 support since ver. 3 rev. 10
Layer groups since ver. 3 rev. 24
Per-layer global transparency since ver. 3 rev. 26
Inter-frame compression with variable reference since ver. 3 rev. 30
Animation, object-based with descriptors since ver. 3 rev. 31
Large image support (up to 65,535 by 65,535) since ver. 2
Transparency via independent alpha channel since ver. 1
Lossless compression since ver. 1



Copyright © John Paul Chacha, 2001-2018