CN102930591A - Fast rendering of surface vegetation - Google Patents
Fast rendering of surface vegetation Download PDFInfo
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- CN102930591A CN102930591A CN2012104460787A CN201210446078A CN102930591A CN 102930591 A CN102930591 A CN 102930591A CN 2012104460787 A CN2012104460787 A CN 2012104460787A CN 201210446078 A CN201210446078 A CN 201210446078A CN 102930591 A CN102930591 A CN 102930591A
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Abstract
The invention relates to the technical field of computer graphics, particularly to a fast rendering of surface vegetation, and provides a landform drawing method based on the Lod technology aiming at solving the problem of low rendering efficiency for a large amount of plant communities of large landforms. A two-dimensional and three-dimensional rendering combined method and instantiation are adopted, the rendering efficiency is improved, and scene reality is not lost.
Description
Technical field
The present invention relates to the computer graphics techniques field, more particularly, the Fast rendering method of ground flora.
Background technology
Large-scale complex natural plants scene fast or real-time rendering be the soil utilization, digital agriculture and forestry, Digital Media, one of basic difficulties in digital entertainment and the virtual reality.
The three-dimensional visualization performance of plant body and superficial makings is very complicated, particularly for the true performance of plant community or scale Forest Scene, processes possibly the above polygon data of at least hundred ten thousand ranks if the application of pure 3D solid is played up.
Hardware with present existing method and routine is the real-time rendering that can't finish so many natural plants scene.For this reason, people adopt the alternative three-dimensional entity model of method of the bulletin board of two dimensional image to represent plant in three-dimensional modeling.From having realized the real-time rendering of extensive plant scene.But the problem of this method maximum is real when the video camera approaching object, just can't obtain the sense of reality of three-dimensional price.
The present invention is directed to the problems referred to above, the Adapti ve rendering method that the three-dimensional that has proposed a kind of plant botanical system based on landform Lod grade and two dimension are played up has namely solved a large amount of triangles and has played up, and can allow again the ramber obtain best experience sense.
Summary of the invention
In view of the problem that prior art exists, the technical solution adopted in the present invention is the Fast rendering of a kind of ground flora, and its key step is as follows:
1) according to the position of plant entity in the scene, obtains the landform numbering of his current terrain block of living in;
2) according to the distance of terrain block and video camera, with the rugged degree of current terrain block, obtain observability and the Lod grade of each terrain block;
3) according to plants in the lod of terrain block grade, determine to adopt 2 dimensions or 3 dimensions to play up;
If the employing three-dimensional rendering then adopts how much batches mode, current three-dimensional plant body is played up;
If adopt the mode of two dimension, then adopt the mode of bulletin board, the plant of low Lod grade is played up.
The mode of this bulletin board is that then according to distance and the angle of current video camera and plant, the pinup picture of an optimum of selection is used as the bulletin board pinup picture and imports into according to current plant and angle video camera and the pre-one group of bulletin board pinup picture that generates out of distance.
The present invention is directed to the low problem of rendering efficiency of a large amount of plant communitys of large-scale landform, propose a kind of ground type method for drafting based on the Lod technology, played up the method that combines in conjunction with two and three dimensions, and adopted instantiation, promote rendering efficiency, do not lost again the authenticity of scene.
Embodiment
The Fast rendering of a kind of ground flora, its key step is as follows:
1) according to the position of plant entity in the scene, obtains the landform numbering of his current terrain block of living in;
2) according to the distance of terrain block and video camera, with the rugged degree of current terrain block, obtain observability and the Lod grade of each terrain block;
3) according to plants in the lod of terrain block grade, determine to adopt 2 dimensions or 3 dimensions to play up;
If the employing three-dimensional rendering then adopts how much batches mode, current three-dimensional plant body is played up;
If adopt the mode of two dimension, then adopt the mode of bulletin board, the plant of low Lod grade is played up.
The mode of this bulletin board is that then according to distance and the angle of current video camera and plant, the pinup picture of an optimum of selection is used as the bulletin board pinup picture and imports into according to current plant and angle video camera and the pre-one group of bulletin board pinup picture that generates out of distance.
Claims (2)
1. the Fast rendering of ground flora, its key step is as follows:
1) according to the position of plant entity in the scene, obtains the landform numbering of his current terrain block of living in;
2) according to the distance of terrain block and video camera, with the rugged degree of current terrain block, obtain observability and the Lod grade of each terrain block;
3) according to plants in the lod of terrain block grade, determine to adopt 2 dimensions or 3 dimensions to play up;
If the employing three-dimensional rendering then adopts how much batches mode, current three-dimensional plant body is played up;
If adopt the mode of two dimension, then adopt the mode of bulletin board, the plant of low Lod grade is played up.
2.
According to claim 1The Fast rendering of ground flora, it is characterized in that: the mode of described bulletin board is according to current plant and angle video camera and the pre-one group of bulletin board pinup picture that generates out of distance, then according to distance and the angle of current video camera and plant, select pinup picture to be used as the bulletin board pinup picture and import into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104460787A CN102930591A (en) | 2012-11-09 | 2012-11-09 | Fast rendering of surface vegetation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104460787A CN102930591A (en) | 2012-11-09 | 2012-11-09 | Fast rendering of surface vegetation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102930591A true CN102930591A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104460787A Pending CN102930591A (en) | 2012-11-09 | 2012-11-09 | Fast rendering of surface vegetation |
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| CN (1) | CN102930591A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913476A (en) * | 2016-06-14 | 2016-08-31 | 腾讯科技（深圳）有限公司 | Rendering method and device of vegetation image |
| CN107978013A (en) * | 2017-12-20 | 2018-05-01 | 苏州蜗牛数字科技股份有限公司 | A kind of spherical surface data tissue renders and collision checking method and system |
| CN108543311A (en) * | 2018-04-20 | 2018-09-18 | 苏州蜗牛数字科技股份有限公司 | A method of automatically generating scene vegetation system |
| CN112206535A (en) * | 2020-11-05 | 2021-01-12 | 腾讯科技（深圳）有限公司 | Rendering display method and device of virtual object, terminal and storage medium |
| CN113793405A (en) * | 2021-09-15 | 2021-12-14 | 杭州睿胜软件有限公司 | Method, computer system and storage medium for presenting distribution of plants |
-
2012
- 2012-11-09 CN CN2012104460787A patent/CN102930591A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913476A (en) * | 2016-06-14 | 2016-08-31 | 腾讯科技（深圳）有限公司 | Rendering method and device of vegetation image |
| CN107978013A (en) * | 2017-12-20 | 2018-05-01 | 苏州蜗牛数字科技股份有限公司 | A kind of spherical surface data tissue renders and collision checking method and system |
| CN107978013B (en) * | 2017-12-20 | 2021-04-16 | 苏州蜗牛数字科技股份有限公司 | Spherical surface data organization rendering and collision detection method and system |
| CN108543311A (en) * | 2018-04-20 | 2018-09-18 | 苏州蜗牛数字科技股份有限公司 | A method of automatically generating scene vegetation system |
| CN112206535A (en) * | 2020-11-05 | 2021-01-12 | 腾讯科技（深圳）有限公司 | Rendering display method and device of virtual object, terminal and storage medium |
| CN113793405A (en) * | 2021-09-15 | 2021-12-14 | 杭州睿胜软件有限公司 | Method, computer system and storage medium for presenting distribution of plants |
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Application publication date: 20130213 |