27. Media-colorant interactions - color

27. Media-colorant interactions - color - EE 638:...

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Unformatted text preview: EE 638: Principles of Digital Color Imaging Systems Lecture 25 Kruse-Gustavon model Microscopic model Linear system Model assumptions for Layer1 Within colorant, assume ideal point-to-point interaction for scatter Use multiplicative model to represent absorptance in passing through colorant colorant substrate Layer 1 (1) (2) (3) (4) Thin optical element Assume Layer 2: this is where scattering takes place Aside covered area transmittance of colorant uncovered area transmittance of area not covered with colorant Recall temporal frequency Spatial frequency model: Point spread of media: media (2) (3) stimulus reflection incident not a spatial model but rather macroscopic Spectral reflectance of paper Wavelength dependent scattering Layer 3 Stage 3 to stage 4 Can be integrated? Initially incident on print at top of colorant layer Light that reaches surface of media Light that emerges from media after scatter within media Light that emerges from print after passing badi through colorant layer Recall: Primaries Additive systems (display devices) Ideal block model for primaries Subtractive color model - Reflectance...
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27. Media-colorant interactions - color - EE 638:...

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