ISO/IEC 29170-2:2015
Information technology — Advanced image coding and evaluation — Part 2: Evaluation procedure for nearly lossless coding
ISO/IEC 29170-2:2015 normalizes evaluation and grading of a light coding system used for displays and display systems, but is independent of the display technology. This procedure measures whether an observer can distinguish between an uncompressed reference and the reconstructed image to a pre-determined, statistically meaningful level.
The procedure compares individual images with two possible forced choice comparison test methods. This procedure relies on subjective evaluation methods designed to discern image imperfections on electronic colour displays of any technology or size.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Test methods
5.1 Protocol selection
5.2 Media selection
5.3 Observers
5.3.1 Observer selection
5.3.2 Observer visual screening
5.3.3 Instructions to observers
5.3.4 Training session
5.4 Viewing conditions
5.4.1 Lighting and display calibration
5.4.2 Viewing distance
5.4.3 Viewing position
5.5 Viewing time
5.6 Trial retry
5.7 Test reporting
5.8 Verification of procedure
Annex A (normative) Forced choice paradigm with non-flickering images test protocol
Annex B (normative) Forced choice paradigm with interleaved images test protocol
Annex C (normative) Media selection and preparation procedure
Annex D (normative) Test report procedure
Annex E (informative) Observer vision testing
Annex F (informative) Self-test certification
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Test methods
5.1 Protocol selection
5.2 Media selection
5.3 Observers
5.3.1 Observer selection
5.3.2 Observer visual screening
5.3.3 Instructions to observers
5.3.4 Training session
5.4 Viewing conditions
5.4.1 Lighting and display calibration
5.4.2 Viewing distance
5.4.3 Viewing position
5.5 Viewing time
5.6 Trial retry
5.7 Test reporting
5.8 Verification of procedure
Annex A (normative) Forced choice paradigm with non-flickering images test protocol
Annex B (normative) Forced choice paradigm with interleaved images test protocol
Annex C (normative) Media selection and preparation procedure
Annex D (normative) Test report procedure
Annex E (informative) Observer vision testing
Annex F (informative) Self-test certification
Bibliography