Coatings are used today for products, ranging from automotive production to electronics and everyday use items. Product design is taking on an increasingly important role, where effect pigments come to the fore, offering a coated surface extra optical characteristics. Individual effect pigments have strong anisotropic, azimuthaly‐dependent behaviour, typically suppressed by a coating application process, randomly orienting pigment particles resulting in isotropic appearance. One exception is a pigment that allows control of the azimuthal orientation of flakes using a magnetic field. We investigate visual texture effects due to such an orientation in a framework allowing efficient capturing, modelling and editing of its appearance. We captured spatially‐varying BRDFs of four coatings containing magnetic effect pigments. As per‐pixel non‐linear fitting cannot preserve coating sparkle effects, we suggest a novel method of anisotropy modelling based on images shifting in an angular domain. The model can be utilized for a fast transfer of desired anisotropy to any isotropic effect coating, while preserving important spatially‐varying visual features of the original coating. The anisotropic behaviour was fitted by a parametric model allowing for editing of coating appearance. This framework allows exploration of anisotropic effect coatings and their appearance transfer to standard effect coatings in a virtual environment.

中文翻译：

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各向异性效应涂层的捕获和编辑框架

如今，涂料用于产品，从汽车生产到电子产品和日常用品。产品设计正扮演着越来越重要的角色，效果颜料应运而生，为涂层表面提供额外的光学特性。个别效果颜料具有很强的各向异性，方位角依赖性，通常被涂料涂覆过程抑制，使颜料颗粒随机取向，导致各向同性外观。一个例外是颜料，它允许使用磁场控制薄片的方位角方向。我们调查了由于框架中的这种方向而导致的视觉纹理效果，从而可以有效捕获，建模和编辑其外观。我们捕获了包含磁性效应颜料的四种涂料的空间变化BRDF。由于每个像素的非线性拟合无法保留涂层的闪光效果，因此我们建议一种基于图像在角域中移动的各向异性建模的新方法。该模型可用于将所需的各向异性快速转移到任何各向同性的效果涂层，同时保留原始涂层重要的空间变化视觉特征。各向异性行为通过参数模型拟合，可以编辑涂层外观。该框架允许在虚拟环境中探索各向异性效果涂层并将其外观转移到标准效果涂层。同时保留原始涂层重要的空间变化视觉特征。各向异性行为通过参数模型拟合，可以编辑涂层外观。该框架允许在虚拟环境中探索各向异性效果涂层并将其外观转移到标准效果涂层。同时保留原始涂层重要的空间变化视觉特征。各向异性行为通过参数模型拟合，可以编辑涂层外观。该框架允许在虚拟环境中探索各向异性效果涂层并将其外观转移到标准效果涂层。