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基于相對葉綠素含量的黃瓜葉色仿真
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“十二五”國家科技支撐計劃資助項目(2012BAD35B01)、北京市自然科學基金資助項目(4122033)和北京市農林科學院自主創(chuàng)新專項資助項目(KJCX201104011)


Visual Simulation of Cucumber Leaf Color Based on the Relative Content of Chlorophyll
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    提出了一種基于相對葉綠素含量的植物葉片顏色仿真方法,通過連續(xù)對正常生長狀態(tài)下的黃瓜葉片圖像采集及相對葉綠素含量SPAD值測定,建立了黃瓜葉片顏色分量與SPAD值的數學關系模型,并采用均方根誤差(RMSE)對模型進行驗證,結果顯示葉片的3個顏色分量R、G、B的實測值與模擬值之間的RMSE為13.43%、8.47%、7.42%,模擬效果較好。通過結合葉片色素濃度分布圖對葉色空間分布進行仿真,并采用高級著色器語言實現了黃瓜葉片表觀顏色變化過程的可視化模擬,獲得了較好的真實感效果。

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    A method for visual simulating leaf color based on the relative content of chlorophyll was proposed. The mathematical model between cucumber leaf color components and chlorophyll relative content was established according to images acquisited from real field and measuring chlorophyll relative content (SPAD) of the cucumber leaf in normal growth state continuously, and the model was also verified by using root-mean-square error (RMSE). The results showed that the RMSE between the observed values (R, G, B) and simulated vales(R, G, B) in leaf are 13.43%, 8.47%, 7.42% respectively. The rendering for the spatial distribution of apparent color of cucumber leaf was realized by combining with a black and white pigment distribution texture which was a grayscale image before being preprocessed. Then the high level shader language (OpenGL 2.0 Shader Language) was used to realize the rendering of apparent color changing process of cucumber leaf. The above process showed that the method proposed can achieve better realistic rendering results.

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陸聲鏈,汪麗萍,何火嬌,郭新宇.基于相對葉綠素含量的黃瓜葉色仿真[J].農業(yè)機械學報,2014,45(3):250-254. Lu Shenglian, Wang Liping, He Huojiao, Guo Xinyu. Visual Simulation of Cucumber Leaf Color Based on the Relative Content of Chlorophyll[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(3):250-254.

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歷史
  • 收稿日期:2013-03-21
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  • 在線發(fā)布日期: 2014-03-10
  • 出版日期: 2014-02-10