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Advanced Computer Graphics: Difference between revisions
→Radiometry
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==Radiometry== | ==Radiometry== | ||
{{main | Wikipedia: Radiometry}} | |||
===Geometrical Optics=== | ===Geometrical Optics=== | ||
{{main | Wikipedia: Geometrical Optics}} | |||
* Light are rays which reflect, refract, and scatter | * Light are rays which reflect, refract, and scatter | ||
===Solid Angle=== | ===Solid Angle=== | ||
* Solid angle = area / radius^2 on a sphere | * Solid angle = area / radius^2 on a sphere | ||
===Spectral Radiance=== | |||
{{main | Wikipedia: Radiance}} | |||
* Spectral radiance is energy per time per wavelength per solid angle per area | |||
* <math>L(t, \lambda, \omega, \mathbf{x})=\frac{d^4 Q(t, \lambda, \omega, \mathbf{x})}{dt d\lambda d\omega dA^\perp}</math> | |||
: where energy is <math>Q(t, \lambda, \omega, \mathbf{x})</math> | |||
===Radiance=== | |||
{{main | Wikipedia: Radiance}} | |||
* power per solid angle per area | |||
* <math>L(\omega, \mathbf{x}) = \frac{d^2 \Phi(\omega, \mathbf{x})}{d\omega dA^\perp}</math> | |||
===Irradiance=== | |||
===Radiant Intensity=== | |||
==BRDF, Reflection Integral== | ==BRDF, Reflection Integral== | ||