Appearance of Woven Cloth
Appearance of Woven Cloth
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发表时间：
2008
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通讯作者：
P. Irawan
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作者：
P. Irawan
特定织物的外观是由大规模反射率和小规模纹理的变化产生的，因为整个表面的视角和照明角度都发生了变化。本论文对机织布料的反射率和纹理进行了研究，旨在识别和模拟布料外观最重要的光学特征。据报道，对一系列织物进行了新的测量，包括天然纤维和合成纤维以及短纤维和长丝纱。介绍了一种新的机织物散射模型，该模型基于对纤维镜面反射的所有分析，描述了织物的反射率和纹理。与基于数据的模型不同，我们的过程模型不需要图像数据。它可以使用一小组物理上有意义的参数来处理广泛的织物，这些参数描述了纤维的特性、纱线的几何形状和编织的图案。通过与实际织物的高分辨率视频进行比较，验证了该模型的有效性。
The appearance of a particular fabric is produced by variations in both large-scale reflectance and small-scale texture as the viewing and illumination angles change across the surface. This thesis presents a study of the reflectance and texture of woven cloth that aims to identify and model the most important optical features of cloth appearance. New measurements are reported for a range of fabrics including natural and synthetic fibers as well as staple and filament yarns. A new scattering model for woven cloth is introduced that describes the reflectance and the texture based on all analysis of specular reflection from the fibers. Unlike data-based models, our procedural model requires no image data. It can handle a wide range of fabrics using a small set of physically meaningful parameters that describe the characteristics of the fibers, the geometry of the yarns, and the pattern of the weave. The model is validated against the measurements and by comparisons to high-resolution video of the real fabrics.