Search Results - Lei-lei LIU

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  1. 1

    Modeling curve dynamics and spatial geometry characteristics of rice leaves by Yong-hui ZHANG, Liang TANG, Xiao-jun LIU, Lei-lei LIU, Wei-xing CAO, Yan ZHU

    Published 2017-10-01

    Abstract: The objective of this work was to develop a dynamic model for describing leaf curves and a detailed spatial geometry model of the rice leaf (including sub-models for unexpanded leaf blades, expanded leaf blades, and leaf sheaths), and to realize three-dimensional (3D) dynamic visualization...

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  2. 2

    Modeling Dynamics of Leaf Color Based on RGB Value in Rice by Yong-hui ZHANG, Liang TANG, Xiao-jun LIU, Lei-lei LIU, Wei-xing CAO, Yan ZHU

    Published 2014-04-01

    This paper was to develop a model for simulating the leaf color changes in rice (Oryza sativa L.) based on RGB (red, green, and blue) values. Based on rice experiment data with different cultivars and nitrogen (N) rates, the time-course RGB values of each leaf on main stem were collected during the...

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  3. 3

    Collision detection of virtual plant based on bounding volume hierarchy: A case study on virtual wheat by Liang TANG, Wei-guo SONG, Tian-cheng HOU, Lei-lei LIU, Wei-xing CAO, Yan ZHU

    Published 2018-02-01

    Visualization of simulated crop growth and development is of significant interest to crop research and production. This study aims to address the phenomenon of organs cross-drawing by developing a method of collision detection for improving vivid 3D visualizations of virtual wheat crops. First, the...

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  4. 4

    Spatiotemporal Changes in Soil Nutrients: A Case Study in Taihu Region of China by Lei-lei LIU, Yan ZHU, Xiao-jun LIU, Wei-xing CAO, Mao XU, Xu-kui WANG, En-li WANG

    Published 2014-01-01

    The accurate assessment of the spatiotemporal changes in soil nutrients influenced by agricultural production provides the basis for development of management strategies to maintain soil fertility and balance soil nutrients. In this paper, we combined spatial measurements from 2157 soil samples and...

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  5. 5

    Quantifying the spatial variation in the potential productivity and yield gap of winter wheat in China by Shi-yuan ZHANG, Xiao-hu ZHANG, Xiao-lei QIU, Liang TANG, Yan ZHU, Wei-xing CAO, Lei-lei LIU

    Published 2017-04-01

    Despite the improvement in cultivar characters and management practices, large gaps between the attainable and potential yields still exist in winter wheat of China. Quantifying the crop potential yield is essential for estimating the food production capacity and improving agricultural policies to e...

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