Method and device for rendering subsurface scattering effect

Abstract

The invention discloses a method and device for rendering the subsurface scattering effect. According to the scheme, after a target object to be rendered is determined, and aiming at each light emission point on a light emission surface in the target object, a plurality of target light incidence points are sampled from a light incidence surface; for each target light incidence point corresponding to the light emission points, based on the target distance between the target light incidence points and the target light emission points, the illumination intensities of the target light illumination intensity points is subjected to index attenuation, and attenuated illumination intensities is obtained; for each light emission point, multiple attenuated illumination intensities corresponding to the light emission points are summed up, and the illumination intensities of the light emission points are obtained; the subsurface scattering effect of the target object is rendered according to the illumination intensities of the light emission points on the light emission face. According to the scheme, the truthfulness of the rendered subsurface scattering effect of the object in a picture can be improved.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular to a method and device for rendering subsurface scattering effects. Background technique [0002] Subsurface scattering is a phenomenon in which light enters an object from the surface of a non-metallic object, scatters inside the object, and finally exits the object and enters the field of view. Subsurface scattering is mainly used to simulate a real light and shadow effect from the internal surface of transparent or translucent materials. For example, under the light of a candle, the end of the candle near the flame will show a translucent effect; Under the irradiation of light such as light, the effect of human skin and so on. [0003] Subsurface scattering has been widely used in 3D animation movies, games and many other fields to improve the realism of objects in the picture. In order to render the subsurface scattering effect produced by objects (such ...

AI Technical Summary

Problems solved by technology

However, due to the low accuracy of calculating the light intensity of the exit point where the light exits the surface of the object, the light intensity of the exit point deviates from the actual light intensity, which affects the authenticity of the subsurface scattering effect of the object in the picture.

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