A real-time rendering method and device based on ambient light probes

Abstract

The invention discloses a real-time rendering method based on an environment light probe. Use a group of ambient light probes to obtain lighting information, and then perform occlusion correction on this group of lighting information, and finally use the corrected lighting information to perform rendering calculations for the rendered object; the details of occlusion correction are as follows: For each environment Lighting probe, the probe is connected with multiple preset different position points on the rendered object with straight line segments; each line segment is assigned a value according to whether the line segment intersects with other objects: if the intersection is assigned a value of 0, Otherwise, it is assigned a value of 1; the ratio of the sum of the assigned values ​​of straight line segments to the total number of straight line segments is used as the occlusion influence correction coefficient, and the product of the occlusion influence correction coefficient and the illumination information obtained by the ambient light probe is the occlusion of the ambient light probe Affects the corrected lighting information. The invention also discloses a real-time rendering device based on the ambient light probe. The invention can make the rendering effect close to the actual situation.

Description

technical field [0001] The invention relates to an image rendering method, in particular to a real-time rendering method based on an ambient light probe, and belongs to the technical field of computer image processing. Background technique [0002] Ambient light probe (light probe) is a kind of lighting rendering technology. As its name implies, its basic principle refers to arranging a series of "sampling points" in the scene that record the intensity of light received from all directions around it (ie, ambient light probe). , collect the light intensity (light information) received from all directions around, and apply the light information to the rendered model. The ambient light probe records the lighting information in the surrounding environment, and uses the lighting information recorded by it to affect the final lighting effect of the rendered object during real-time rendering. Since this technology does not consume as much performance as global real-time illuminati...

AI Technical Summary

Problems solved by technology

[0003] However, the existing ambient light probe implementation method does not consider whether there is occlusion between the probe and the rendered object

For example, there is a wall between a red light source and the rendered object, the rendered object is on the right side of the wall, the red light source is on the left side of the wall, and there is a probe on the left side of the wall. The lighting data recorded by this probe contains the light of the red light source, causing the rendered object to be affected by the red light source. In the real world, because the wall blocks the light of the red light source, the red light source should not be able to illuminate the rendered object

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