ISO/TS 17321-4:2016
Graphic technology and photography — Colour characterization of digital still cameras (DSCs) — Part 4: Programmable light emission system
ISO/TS 17321-4:2016 specifies requirements for a programmable light emission system to produce various spectral radiance distributions intended for DSC colour characterization applications.
NOTE 1 Evaluation metrics are described in this part of ISO 17321. These evaluations metrics are intended to provide "Figure of Merit (goodness)" relating to the ability of the device to produce arbitrary spectral power distributions.
NOTE 2 This part of ISO 17321 applies to a programmable light emission system composed of LEDs. However, it can be applied to light emitting devices such as quantum dots, organic LEDs, laser diodes and so forth.
NOTE 3 If spiky spectral reproduction is required, devices which have more spiky spectral light emission are intended to be used.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 General
4.2 Hardware requirements
4.2.1 General
4.2.2 Operating condition
4.2.3 Specifications of the system
4.2.4 Time stability and long-term stability of light intensity
4.3 Figure of merit for a colour target using a programmable light emission system
4.3.1 General
4.3.2 Terms and notations of SR2
4.3.3 Method for the calculation of SR2
4.3.4 Figure of merit
4.4 Report
Annex A (informative) Integrating sphere method and LED-driving method
Annex B (informative) Spectral power distribution optimization procedure for multiple LEDs
Annex C (informative) The need for constraints on the average values and maximum values of SR2 and CIEDE2000
Annex D (informative) Evaluation method for light source generated by a programmable light emission system
Annex E (informative) SR2 and CIEDE2000 recommendations for colorimetric image capture
Annex F (normative) SR2L and SR2 calculation methods for a light emission system in which spectral distribution is only obtained by measurements
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 General
4.2 Hardware requirements
4.2.1 General
4.2.2 Operating condition
4.2.3 Specifications of the system
4.2.4 Time stability and long-term stability of light intensity
4.3 Figure of merit for a colour target using a programmable light emission system
4.3.1 General
4.3.2 Terms and notations of SR2
4.3.3 Method for the calculation of SR2
4.3.4 Figure of merit
4.4 Report
Annex A (informative) Integrating sphere method and LED-driving method
Annex B (informative) Spectral power distribution optimization procedure for multiple LEDs
Annex C (informative) The need for constraints on the average values and maximum values of SR2 and CIEDE2000
Annex D (informative) Evaluation method for light source generated by a programmable light emission system
Annex E (informative) SR2 and CIEDE2000 recommendations for colorimetric image capture
Annex F (normative) SR2L and SR2 calculation methods for a light emission system in which spectral distribution is only obtained by measurements
Bibliography