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基于輻射照度的作物冠層光分布計(jì)算系統(tǒng)設(shè)
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System of Light Distribution within Crop Canopy Based on Radiosity Method
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    摘要:

    以玉米為例，使用C++語言和OpenGL圖形函數(shù)庫，在Windows平臺下，開發(fā)基于輻射度-圖形學(xué)結(jié)合模型（RGM）的作物冠層光分布計(jì)算系統(tǒng)。以相對成熟的RGM方法提取模型參數(shù)，并針對作物冠層特點(diǎn)對方法做適當(dāng)改進(jìn)。在冠層三維模型基礎(chǔ)上，通過用戶交互指定參數(shù)，可計(jì)算出冠層內(nèi)每個(gè)面元的光分布狀態(tài)。該系統(tǒng)所需模型參數(shù)少，且參數(shù)均具有較為明確的植物學(xué)和農(nóng)學(xué)意義，便于與傳統(tǒng)作物模型相結(jié)合，操作界面友好、使用方便。

    Abstract:

    In order to provide an effective tool for light distribution calculation within crop canopy on Windows platform, a light distribution calculation system derived from RGM model was developed using C++ language and OpenGL library. A maize canopy geometrical model was taking as the experimental example. Parameters were selected on the basis of feasible RGM model. The related methods were improved according to the characteristics of crop canopy. On the basis of 3-D maize canopy model, the light distribution situation of each organ facet could be calculated in real time by using parameters input via human-computer interaction. The system had user-friendly interface and was easy to operate. It only needed few input parameters and most parameters were meaningful in botany and agriculture.

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溫維亮,孟軍,郭新宇,王雪,肖伯祥,陸聲鏈.基于輻射照度的作物冠層光分布計(jì)算系統(tǒng)設(shè)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(Z1):190-193. System of Light Distribution within Crop Canopy Based on Radiosity Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(Z1):190-193.

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