Color Imaging Workflow Primitives: Details and Examples

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Definitions • ‘Scene-Referred image data’ (SR) • Image data that unambiguously encodes the spectral reflectances of the scene (including scene-capture tristimulus encodings) • A scene-referred image would be encoded using a very large gamut, high dynamic range color encoding specification • ‘Original-Referred image data’ (OR) • Image data that unambiguously encodes a captured computergenerated or hardcopy original • 'Reference-Output-Referred image data' (ROR) • Output-referred image data that is color-rendered to a standardized output (i.e., an output that is defined through an ideal specification - a precise, arbitrary, output definition that may or may not be realizable) • 'Actual-Output-Referred image data' (AOR) • Output-referred image data that is color-rendered to a specific, particular, realizable device, e.g., encoding the intended color appearance of an image as it is to be printed to a particular printer T2B - Color Management A. McCarthy CIC10 - Scottsdale, 12 Nov 2002 8
Definitions • The wide range of particular scene-referred instances, original-referred instances, reference-output-referred instances, and actual-output-referred instances are coalesced into these four meta-image-states, allowing the establishment of an overarching set of "workflow rules" governing the relationships between these image states: • Capture occurs into either the scene-referred state or the originalreferred image state - i.e., a capture-referred state • Image data must be “color-rendered" to an actual-output-referred color encoding specification before it can be visualized through any output mechanism • A reference-output-referred image can be used as a standardized exchange of expected or preferred output color appearance, but may or may not be directly physically realizable • Device dependent color encodings that are not associated with any ICC profile or means of converting to CIE colorimetry (thereby achieving device independence) cannot be color managed T2B - Color Management A. McCarthy CIC10 - Scottsdale, 12 Nov 2002 9
Page 1 and 2: Color Imaging Workflow Primitives:
Page 3 and 4: Let’s define our terms… definit
Page 5 and 6: Color Control (ICC) Architecture
Page 7: Definitions • ‘Scene-Referred i
Page 11 and 12: Definitions • Four fundamental im
Page 13 and 14: Definitions • Four fundamental im
Page 15 and 16: The workflow primitives… 15 workf
Page 17 and 18: Functional Workflow Primitives •
Page 19 and 20: The Capture Workflow Primitive Scen
Page 21 and 22: The Capture Workflow Primitive •
Page 23 and 24: The Color-Render (CMM) Workflow Pri
Page 25 and 26: The Color-Render (CMM) Workflow Pri
Page 27 and 28: The Adjust Image/Object Workflow Pr
Page 33 and 34: The Assemble Object/Entity Workflow
Page 35 and 36: The Assemble Object/Entity Workflow
Page 37 and 38: The Visualization Workflow Primitiv
Page 39 and 40: The workflow primitives… workflow
Page 41 and 42: A Minimal Workflow 41 Color- Render
Page 43 and 44: A Commercial Print Workflow scan RG
Page 45 and 46: A Commercial Print Workflow - Scena
Page 47 and 48: A Commercial Print Workflow - Re-ta
Page 49 and 50: Scenario Three - Sequential View 49
Page 51: Workflow Considerations 51 scan RGB

Color Imaging Workflow Primitives: Details and Examples

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