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2 results about "Ambient occlusion" patented technology
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In computer graphics, ambient occlusion is a shading and rendering technique used to calculate how exposed each point in a scene is to ambient lighting. For example, the interior of a tube is typically more occluded (and hence darker) than the exposed outer surfaces, and the deeper you go inside the tube, the more occluded (and darker) the lighting becomes. Ambient occlusion can be seen as an accessibility value that is calculated for each surface point. In scenes with open sky this is done by estimating the amount of visible sky for each point, while in indoor environments only objects within a certain radius are taken into account and the walls are assumed to be the origin of the ambient light. The result is a diffuse, non-directional shading effect that casts no clear shadows but that darkens enclosed and sheltered areas and can affect the rendered image's overall tone. It is often used as a post-processing effect.
Method, device, equipment, medium and product for rendering a translucent model
This application relates to the field of computer technology and discloses a rendering method, apparatus, device, medium, and product for a semi-transparent model. The method includes: acquiring a base model to be rendered and a semi-transparent material; determining the ambient occlusion value of each vertex in the base model based on a directed distance field; determining a first blend color of the vertex by weighting the base color of the material and the refraction color of the gaps based on the ambient occlusion value of the vertex; determining a second blend color of the vertex by weighting the first blend color and the edge light transmission color based on the curvature of the vertex; and rendering the base model based on the semi-transparent material and the second blend colors of each vertex to generate a semi-transparent model corresponding to the base model. This application can improve the rendering effect at the gap position, enhance the edge transmission of the model, and effectively avoid problems such as black gaps and distorted edge light transmission.
Owner:GUANGZHOU BOGUAN TELECOMM TECH LTD
Method, device and equipment for generating soft shadow image and readable storage medium
The application discloses a soft shadow image generation method, device and equipment and a readable storage medium, and belongs to the technical field of computer graphics. The method comprises the following steps: determining an ambient light shading map according to an ambient light parameter and a three-dimensional model used for representing a virtual object, wherein the ambient light shading map is used for representing the shading information of each vertex of the three-dimensional model; determining a soft shadow feature based on the ambient light shading map, wherein the soft shadow feature is used for representing the soft shadow formed by the three-dimensional model in the ambient light, and the soft shadow is a shadow with a changeable shadow parameter in an edge area; and generating a soft shadow image of the three-dimensional model based on the soft shadow feature. Since the ambient light shading map can reflect the information of the three-dimensional model and the information of the ambient light, the soft shadow image can be generated based on the ambient light shading map, and the shadow effect of the three-dimensional model is improved.
Owner:TENCENT TECHNOLOGY (SHENZHEN) CO LTD