Hardware based graphics workstation solution for refraction phen

Details Hardware based graphics workstation solution for refraction phen Hardware based graphics workstation solution for refraction phen

1995-09-01

1998-02-17

Zimmerman, Mark K.

395138, G06T 320, G06T 1500

Patent

active

057200203

ABSTRACT:
A system and method for drawing non-opaque objects with realistic refraction attributes. The system adjusts the pixel values of an object with a refraction index other than unity so that the resulting image approximates a refracted image. Adjacent pixel values are copied and blended with the pixel being rendered based upon a calculated refraction value. Refraction can be approximated as a surface effect by offset vectors, as a property of an object having parallel front and back surfaces and as an arbitrary object with non-parallel opposing surfaces. The more complex representations provide improved approximations of the refracted image. The resulting image presents a more realistic view of the refracted image.

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Computer Graphics Forum, 1992, vol. 11, No. 4, "Consistent Schemes for Addressing Surfaces when Ray Tracing Transparent CSG Objects", Gervautz, M., pp. 203-211.
8078 Proceeding of the IEEE, Apr. 1991, "Massively Parallel Computational Simulations in Light Scattering", Potter et al, pp. 567-573.
IBM Journal of Research and Development, Jan./Mar. 1991, "Visualization of Molecular Dynamics via Ray-Tracing and Animation in a Vectorized Environment", Williams et al, pp. 108-118.

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