| CPC G06T 15/06 (2013.01) [G06T 15/005 (2013.01); G06T 15/40 (2013.01); G06T 15/50 (2013.01); G06T 2215/12 (2013.01)] | 20 Claims |
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1. A method for generating an occlusion value for a pixel, the method comprising:
selecting, by one or more processors, a pixel in an image of a scene;
identifying, by the one or more processors, a set of directions from a location on an object corresponding to the pixel based on an orientation of a surface of the object at the location, wherein the set of directions includes at least two directions;
for each direction of the set of directions, casting, by the one or more processors, a fixed-distance ray in the direction and determining whether the fixed-distance ray intersects another object along a length of the fixed-distance ray, wherein a length of the fixed-distance ray is the same for each direction of the set of directions;
in response to determining that the fixed-distance ray for a first direction of the set of directions does not intersect another object along the length of the fixed-distance ray, obtaining, by the one or more processors, a first occlusion value for the pixel from at least one lighting probe based on the first direction, wherein the length of the fixed-distance ray that is cast in each direction of the set of directions is based on a distance between lighting probes in a grid of lighting probes;
in response to determining the fixed-distance ray for a second direction of the set of directions intersects another object along the length of the fixed-distance ray, obtaining, by the one or more processors, a second occlusion value for the pixel based on performing ray tracing in the second direction from the location on the object corresponding to the pixel; and
accumulating, by the one or more processors, the first occlusion value and the second occlusion value to obtain the occlusion value for the pixel.
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