Illumination and Color in Computer Generated Imagery
(Sprache: Englisch)
In a very broad sense the historical development of computer graphics can be considered in three phases, each a giant step down the road towards "realistic" computer generated images. The first, during the late 1960's and early 1970's, can perhaps be...
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In a very broad sense the historical development of computer graphics can be considered in three phases, each a giant step down the road towards "realistic" computer generated images. The first, during the late 1960's and early 1970's, can perhaps be characterized as the "wire frame" era. Basically pictures were composed of lines. Considerable em phasis was placed on "real time" interactive manipulation of the model. As models became more complex and as raster technology developed, eliminating the hidden lines or hidden surfaces from the image became critical for visual understanding. This requirement resulted in the second phase of computer graphics, the "hidden surface" era, that developed during the 1970's and early 1980's. The names associated with hidden surface algorithms read like a who's who of computer graphics. The cul mination of the hidden surface era and the beginning of the current and third era in computer graphics, the "rendering" era, was Turner Whitted's incorporation of a global illumination model into the ray trac ing algorithm. Now the goal was not just to generate an image, but to generate a realistic appearing image.
Inhaltsverzeichnis zu „Illumination and Color in Computer Generated Imagery “
1.0 Introduction.- 1.1 Intent and Overview.- 1.2 The Process of Creating Images.- 1.3 Representation or Simulation of Reality.- 2.0 The Illumination Process.- 2.1 Light and Materials.- 2.2 Background Optics and Physics.- 2.3 Surface Illumination.- 3.0 Perceptual Response.- 3.1 Describing Color.- 3.2 Colorimetry.- 3.3 Colorimetry and the RGB Monitor.- 3.4 Alternate Color Representations.- 3.5 Color Spaces for Color Computation.- 4.0 Illumination Models.- 4.1 Shading and Illumination Basics.- 4.2 Incremental Shading, Empirical Models.- 4.3 Ray Tracing, Transitional Models.- 4.4 Radiosity, Analytical Models.- 4.5 Hybrid Techniques.- 4.6 Visual Comparison.- 4.7 Summary.- 5.0 Image Display.- 5.1 Image File Considerations.- 5.2 NTSC and RGB Video.- 5.3 Video Setup for Image Display.- 5.4 Monitor Alignment and Calibration.- 5.5 NTSC Limitations.- 5.6 Black and White Display.- Appendix I Terminology.- Appendix II Controlling Appearance.- II.1 Surface Character.- II.1.1 Dielectric Materials.- II.1.2 Conductive Materials.- II.1.3 Composite Materials.- II.1.4 Using Published Spectral Data.- II.2 Surface Finish.- Appendix III Example Code.- III.1 Geometric Utilities.- III.1.1 Code Summary.- III.1.2 Code Source.- III.2 Hemispherical Integrator.- III.2.1 Code Summary.- III.2.2 Code Source.- III.3 Geometric Attenuation.- III.3.1 Code Summary.- III.3.2 Code Source.- III.4 Microfacet Distributions.- III.4.1 Code Summary.- III.4.2 Code Source.- III.5 Fresnel Approximation.- III.5.1 Approximation Methodology.- III.5.2 Code Summary.- III.5.3 Code Source.- III.6 Illumination Models.- III.6.1 Illuminated Surface Description.- III.6.2 Code Summary.- III.6.3 Code Source.- III.7 Color Transformation.- III.7.1 Material Data.- III.7.2 Code Summary.- III.7.3 Code Source.- III.8 Spectral Sampling.-III.8.1 Code Summary.- III.8.2 Code Source.- III.9 RGB Color Cupping.- III.9.1 Code Summary.- III.9.2 Code Source.- Appendix IV Radiosity Algorithms.- IV.1 Pseudocode Definition.- IV.2 Hemi-cube Form
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Factors.- IV.3 Specular Radiosity.- IV.4 Hybrid Form Factors.- Appendix V Equipment Sources.- References.
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Bibliographische Angaben
- Autor: Roy Hall
- 2011, Softcover reprint of the original 1st ed. 1989, XIII, 282 Seiten, Maße: 15,5 x 23,5 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 1461281415
- ISBN-13: 9781461281412
Sprache:
Englisch
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