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Shadow rendering method in interior scene design of virtual home improvement

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 the effect of high execution efficiency

Inactive Publication Date: 2016-08-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Shadow rendering method in interior scene design of virtual home improvement
  • Shadow rendering method in interior scene design of virtual home improvement
  • Shadow rendering method in interior scene design of virtual home improvement

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Embodiment Construction

[0033] The present invention will be further described in detail below with reference to the 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 of the home improvement interior scene under the camera position angle of view and stores them in the texture buffer, builds and generates a shadow map on this basis, and then searches for textures Cache, find all pixels that are closer to the light source than the current pixel from the neighborhood of the current pixel, and calculate their average depth distance, and then determine the blocking area of ​​the current pixel based on the average depth distance and the size of the light source , And then estimate the penumbra measurement width, and then perform Poisson dish sampling on the shadow map, and perform percentage progressive filtering processing on each pixel point obtained b...

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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 inside a computer, and it is an advanced human-machine interface. The scene renderings of the 3D virtual home improvement room apply virtual reality technology to the home improvement field. The photo-realistic rendering of the home improvement indoor scene makes the user feel like 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 larger market prospect. [0003] As an important factor affecting the realism of a three-dimensional scene, shadows can provide spatial geometric information for the scene, help understand the mutual positional relationship and size of objects, and use ...

Claims

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Application Information

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Patent Type & Authority Patents(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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