Estimating Reflectance Parameters of an Object from Saturated Spectral Images

Estimating Reflectance Parameters of an Object from Saturated Spectral Images
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从饱和光谱图像估计物体的反射率参数

DOI:
10.1109/cgiv.2006.40
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发表时间:
2006
期刊:
International Conference on Computer Graphics, Imaging and Visualisation (CGIV'06)
影响因子:
--
通讯作者:
K. Chihara
K. Chihara
中科院分区:
--
文献类型:
--
作者:
Shiying Li;Y. Manabe;K. Chihara

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描述了一种利用光谱图像再现真实的物体表面反射特性的方法,由于图像检测器的动态范围有限,光谱图像通常是饱和的。反射分量被分离成漫反射和镜面反射分量的基础上的二色模型在5 nm的波长间隔之间的380 nm和780 nm的光谱图像的每个像素,和漫反射参数估计在分离过程中。为了估计镜面反射率参数,Torrance-Sparrow反射模型的高斯分布函数被数学变换成线性形式,并且镜面反射分量的不饱和值被进行最小二乘法。对真实的物体的实验结果表明了该方法的有效性
A method is described to reproduce reflection properties at the surface of real objects using spectral images, which are often saturated because of the limited dynamic range of image detectors. Reflection components are separated into diffuse and specular reflection components based on the dichromatic model at 5-nm wavelength intervals between 380 nm and 780 nm for each pixel of the spectral images, and diffuse reflectance parameters are estimated during the separation. To estimate specular reflectance parameters, the Gaussian distribution function of the Torrance-Sparrow reflection model is transformed logarithmically to a linear form, and the unsaturated values of the specular reflection components are subjected to the least squares method. Experimental results with a real object demonstrate the efficiency of the proposed method
Kunihiro Chihara:准确估计颜色和光泽再现的反射率参数
DOI: --
发表时间: 2009
期刊: Computer Vision and Image Understanding Vol.113, Number2
影响因子: --
作者:
Shiying Li;Yoshitsugu Manabe
通讯作者: Yoshitsugu Manabe
数字身体的构建与虚拟空间人体变化的时空分析
DOI: --
发表时间: 2019
期刊:
影响因子: --
作者:
鈴木直樹;服部麻木;大滝正子;西和彦
通讯作者: 西和彦