Graphic technology. Prepress digital data exchange - CIELAB standard colour image data (CIELAB/SCID)

BS ISO 12640-3:2007 Graphic technology. Prepress digital data exchange. CIELAB standard colour image data (CIELAB/SCID)

BS ISO 12640-3 specifies a set of standard large gamut colour images (encoded as 16-bit CIELAB digital data) that can be used for the evaluation of changes in image quality during coding, image processing (including transformation, compression and decompression), displaying on a colour monitor and printing.

These images can be used for research, testing and assessing of output systems such as printers, colour management systems and colour profiles.

Contents of BS ISO 12640-3:

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Requirements

5 Data description and definition

5.1 Data set definition

5.2 Colour encoding used in this part of ISO 12640

5.3 Natural images

5.4 Synthetic images

6 Electronic data

6.1 Image file characteristics

6.2 Image file formats

Annex A (normative) Guidance for use of digital data

Annex B (informative) Definition of the reference colour gamut

Annex C (normative) Check-sum data

Annex D (informative) Typical TIFF file headers used for image data

Annex E (informative) Text insertion

Annex F (informative) Histogram and gamut plots

Annex G (informative) CIELAB values in colour charts

Bibliography