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Image processing method for scene drawing

A graphics processing and scene technology, applied in image data processing, 3D image processing, 3D modeling, etc.

Active Publication Date: 2013-01-30
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the technical problem of realistic rapid rendering of large-scale complex scenes widely used in digital entertainment, virtual scene simulation, urban garden planning and design, and digital agriculture and forestry.

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  • Image processing method for scene drawing

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0044] The method provided by the present invention comprises the following three steps:

[0045] Step 1: Construction of complex scene data;

[0046] Step 2: Draw the shadow depth texture of the scene, that is, the shadow map;

[0047] Step 3: Draw the scene inside the viewpoint frustum.

[0048] figure 1 It is a flow chart of the graphics processing method for scene rendering according to the present invention, showing step 2 and step 3. figure 2 for figure 1 detailed description. Each step will be described in detail below in conjunction with the accompanying drawings.

[0049] Step 1: Construction of complex scene data.

[0050] Since trees are typical representatives of complex scenes, their structure is very...

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Abstract

The invention discloses an image processing method for scene drawing. The method comprises the following steps of: constructing complex scene data, drawing a shadow map of the scene, and drawing the scene in a viewpoint vision cone. According to the method, a tiny object is represented by a semitransparent line segment, and the drawing effect retains rich detailed information; according to the manner of drawing for multiple times, the problem of data in small batch is avoided, and the drawing efficiency is improved; via model combination, single-stage level of detail (LOD) model output of a geometrical shader and model position point sequencing, columnar geometries with different thicknesses can be represented by line segment models with different transparency, thereby ensuring the accuracy of Alpha mixing, realizing semitransparent drawing, and keeping more details.

Description

technical field [0001] The invention relates to the field of graphics and image processing, in particular to the drawing of large-scale scenes based on a graphics processor. Background technique [0002] Real-time rendering of large-scale complex 3D scenes is a challenging problem in the fields of computer graphics and virtual reality. The difficulty is not only the high geometric complexity of the 3D geometric model in the scene, but also the small batch problem (The small batch problem) caused by a large number of models in the scene. [0003] Liu et al proposed a GPU-based dynamic quad stream method (DQS) (reference: F.Liu, W.Hua, and H.J.Bao, Gpu-based dynamic quad stream for forest rendering, Science China-Information Sciences, vol.53, pp.1539-1545, Aug2010). DQS employs hierarchical hierarchical depth images to represent plant models. In the preprocessing stage, a set of billboard images are pre-generated from multiple angles to approximate the plant model. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T15/60
Inventor 张晓鹏鲍冠伯李红军
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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