DICOM PS3.14 2017b - Grayscale Standard Display Function

PS3.14

DICOM PS3.14 2017b - Grayscale Standard Display Function

DICOM Standards Committee


Table of Contents

Notice and Disclaimer
Foreword
1. Scope and Field of Application
2. Normative References
Bibliography
3. Definitions
Glossary
4. Symbols and Abbreviations
5. Conventions
6. Overview
7. The Grayscale Standard Display Function
7.1. General Formulas
7.2. Transmissive Hardcopy Printers
7.3. Reflective Hardcopy Printers
8. References
A. Derivation of the Grayscale Standard Display Function (Informative)
A.1. Rationale For Selecting the Grayscale Standard Display Function
A.2. Details of the Barten Model
A.3. References
B. Table of the Grayscale Standard Display Function (Informative)
C. Measuring the Accuracy With Which a Display System Matches the Grayscale Standard Display Function (Informative)
C.1. General Considerations Regarding Conformance and Metrics
C.2. Methodology
C.3. References
D. Illustrations for Achieving Conformance with the Grayscale Standard Display Function (Informative)
D.1. Emissive Display Systems
D.1.1. Measuring the System Characteristic Curve
D.1.2. Application of the Standard Formula
D.1.3. Implementation of the Standard
D.1.4. Measures of Conformance
D.2. Transparent Hardcopy Devices
D.2.1. Measuring the System Characteristic Curve
D.2.2. Application of the Grayscale Standard Display Function
D.2.3. Implementation of the Grayscale Standard Display Function
D.2.4. Measures of Conformance
D.3. Reflective Display Systems
D.3.1. Measuring the System Characteristic Curve
D.3.2. Application of the Grayscale Standard Display Function
D.3.3. Implementation of the Grayscale Standard Display Function
D.3.4. Measures of Conformance
E. Realizable JND Range of a Display Under Ambient Light (Informative)

List of Figures

6-1. The Grayscale Standard Display Function is an element of the image presentation after several modifications to the image have been completed by other elements of the image acquisition and presentation chain.
6-2. The conceptual model of a Standardized Display System maps P-Values to Luminance via an intermediate transformation to Digital Driving Levels of an unstandardized Display System.
7-1. The Grayscale Standard Display Function presented as logarithm-of-Luminance versus JND-Index
A-1. Illustration for determining the transform that changes the Characteristic Curve of a Display System to a Display Function that approximates the Grayscale Standard Display Function
C-1. Illustration for the LUM and FIT conformance measures
D.1-1. The test pattern will be a variable intensity square in the center of a low Luminance background area.
D.1-2. Measured Characteristic Curve with Ambient Light of an emissive Display System
D.1-3. Measured and interpolated Characteristic Curve, Grayscale Standard Display Function and transformed Display Function of an emissive Display System. The transformed Display Function for this Display System matches the Grayscale Standard Display Function and the two curves are superimposed and indistinguishable.
D.1-4. LUM and FIT measures of conformance for a the transformed Display Function of an emissive Display System
D.2-1. Layout of a Test Pattern for Transparent Hardcopy Media
D.2-3. Plot of OD vs P-Value for an 8-Bit Printer
D.3-1. Measured and interpolated Characteristic Curve and Grayscale Standard Display Function for a printer producing reflective hard-copies
D.3-2. Transformation for modifying the Characteristic Curve of the printer to a Display Function that approximates the Grayscale Standard Display Function
D.3-3. Transformed Display Function and superimposed Grayscale Standard Display Function for a reflective hard-copy Display System. The transformed Display Function for this Display System matches the Grayscale Standard Display Function and the two curves are superimposed and indistinguishable.
D.3-4. Measures of conformance for a reflective hard-copy Display System with equal input and output digitization resolution of 8 bits

List of Tables

B-1. Grayscale Standard Display Function: Luminance versus JND Index
D.1-1. Measured Characteristic Curve plus Ambient Light
D.1-2. Look-Up Table for Calibrating Display System
D.2-1. Optical Densities for Each P-Value for an 8-Bit Printer
D.3-1. Look-Up Table for Calibrating Reflection Hardcopy System
DICOM PS3.14 2017b - Grayscale Standard Display Function