摘要
利用较为接近实际的织物模型 ,在余弦漫射和均匀漫射假设下对织物的漫反射光分布曲线进行了模拟计算 .结合织物的结构因素进行了分析 。
Simulation on goniophotometric curves of diffusely reflected light for fabrics has been made with a model in which an elliptical cross section of the yarn with a ratio 1/ k of the major to minor axis is assumed.The separation and bending factors of the yarn are also considered.The filaments in the yarn surface are conceived to behave as narrow elliptic columns with various length of minor axis that are distributed on an elliptical curve as the luminous flux applied parallel to the filaments of the yarn.Calculation is carried out on the basis of the infinitesimal surfaces of the fabric were Lambert cosine diffusion and uniform diffusion.It can be found that the goniophotometric curve of the diffusely reflected light is a cosine curve for Lambert cosine diffusive infinitesimal surface and a straight line for a uniform diffusive surface in a wide range of angle. Discussion about differentiation of the specular component and diffuse component in the goniophotmetric curves of fabrics is also made.
出处
《西安工程大学学报》
CAS
2001年第4期65-69,共5页
Journal of Xi’an Polytechnic University
关键词
织物
漫反射光
分布曲线
模拟计算
fabric
diffuse reflection
goniophotometric curve
simulation
