Method for shadow rendering in virtual home decoration indoor scene design

A technology for indoor scenes and home decoration, applied in the field of virtual reality, can solve problems such as information distortion and insufficient sampling, and achieve high execution efficiency

Inactive Publication Date: 2014-07-02
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reconstructed information is distorted due to insufficient sampling, which is the aliasing problem
For the aliasing problem of the shadow map method, Reeves proposed a percentage progressive filtering method (Percentage-Closer Filtering). Reduce noise, which brings a lot of calculation

Method used

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  • Method for shadow rendering in virtual home decoration indoor scene design
  • Method for shadow rendering in virtual home decoration indoor scene design
  • Method for shadow rendering in virtual home decoration indoor scene design

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] The shadow rendering method in the virtual home improvement interior scene design of the present invention first determines the depth values ​​of all visible pixels in the home improvement interior scene under the camera position angle of view and stores them in the texture cache, builds and generates shadow maps on this basis, and then searches for textures Cache, find all pixels closer to the light source than the current pixel in the neighborhood of the current pixel, and calculate their average depth distance, and then determine the blocking area of ​​the current pixel according to the average depth distance and the size of the light source , and then estimate the penumbra measurement width, and then perform Poisson disk sampling on the shadow map, and perform percentage progressive filtering on each pixel obtained from the sa...

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Abstract

The invention discloses a method for shadow rendering in virtual home decoration indoor scene design. The method comprises the steps of shadow mapping graph generation, half shadow estimation, percentage approximation filtering based on Poisson disc sampling and finally generation of a virtual home decoration indoor scene shadow effect graph with the reality sense through adding of diffusion reflection environment light. The method can effectively solve the problem of sawtooth deformation of a shadow mapping graph.

Description

technical field [0001] The invention belongs to the field of virtual reality and relates to a real-time shadow effect rendering method in a virtual environment. Background technique [0002] Virtual reality is an artificially constructed environment that exists inside a computer and is an advanced human-computer interface. The scene renderings of the 3D virtual home decoration interior apply virtual reality technology to the field of home decoration. Through the photo-realistic rendering of the interior scene of the home decoration, the user has the feeling of being in the corresponding real environment. Customers can also use this technology to experience the effect of decoration, which brings great convenience to people's house purchase and decoration, and has a great market prospect. [0003] As an important factor affecting the realism of 3D scenes, shadows can provide spatial geometric information for the scene, help to understand the mutual positional relationship an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/60
Inventor 章品正姜晓彤盛玲尤肖虎
Owner SOUTHEAST UNIV
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