US 2004/0001062 A1 · System and method of improved calculation of diffusely reflected light

Abstract

The present invention is related to rendering computer animated video and/or images generally, and to improving the calculation of diffusely reflected light. The present invention includes a system and method of computing diffusely reflected light at one or more positions on surfaces in an object scene from object scene data. The present invention typically includes the step of and/or instructions for selecting a non-regular order for processing a plurality of positions on a surface—the plurality of positions having been predetermined. The present invention also includes the step of and/or instruction for processing the plurality of positions in the non-regular order. This processing typically includes computing diffusely reflected light at a position in the plurality of positions by reference to diffusely reflected light incident on the position when deriving the diffusely reflected light at the position by reference to diffusely reflected light at other positions computed by reference to diffusely reflected light incident on the other positions is inaccurate. Alternatively, deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions computed by reference to diffusely reflected light incident on the other positions when deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions is accurate.

Claims28

Dependent claims

A method of computing diffusely reflected light at one or more positions on surfaces in an object scene from object scene data, the method comprising

selecting a non-regular order for processing a plurality of positions on a surface, said plurality of positions having been predetermined;
processing the plurality of positions in the non-regular order, said processing including
computing diffusely reflected light at a position in the plurality of positions by reference to diffusely reflected light incident on said position when deriving said diffusely reflected light at the position by reference to diffusely reflected light at other positions computed by reference to diffusely reflected light incident on said other positions is inaccurate;
and
deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions computed by reference to diffusely reflected light incident on said other positions when said deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions is accurate.

2 more elements

A computer program product for use in conjunction with a computer system, the computer program product comprising a computer readable medium and a computer program mechanism embedded therein, the computer program mechanism comprising:

a data structure for storing object scene data, said object scene data describing objects in the object scene;
and
a program including
instructions for selecting a non-regular order for processing a plurality of positions on a surface of an object in the object scene, said plurality of positions having been predetermined;
instructions for processing the plurality of positions in the non-regular order, said instructions for processing including
instructions for computing diffusely reflected light at a position in the plurality of positions by reference to diffusely reflected light incident on said position when deriving said diffusely reflected light at the position by reference to diffusely reflected light at other positions computed by reference to diffusely reflected light incident on said other positions is inaccurate;
and
instructions for deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions computed by reference to diffusely reflected light incident on said other positions when said deriving the diffusely reflected light at the position by reference to the diffusely reflected light at the other positions is accurate.

5 more elements

Dependencies are inferred from the claim text.

System and method of improved calculation of diffusely reflected light

Life of this patent

System and method of improved calculation of diffusely reflected light

Life of this patent

Abstract

Claims28