@article{article_999851, title={An Analysis of Goniochromatic and Sparkle Effects on Multi-Layered Materials}, journal={Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi}, volume={24}, pages={737–746}, year={2022}, DOI={10.21205/deufmd.2022247205}, author={Mir, Sermet and Yıldırım, Barış and Kurt, Murat}, keywords={Açısal Renk Değişimi, BSDF, Işıltı, SVD, Otomobil Boyaları, Mikro Sedef}, abstract={Multi-layered materials are layered structures of composing anisotropic media where each layer may have a separate scattering behavior. Multi-layered materials are widely used in cosmetics, jewelry or automobile paint industries. In addition, many real world materials may consist of microscopic particles that can lead to goniochromatic and/or sparkling appearance. Therefore, the accurate representation of these effects is crucial for the photorealistic appearance of the material and many models have been proposed to overcome this problem. In this paper, we analyze various models proposed for representing goniochromatic and sparkle effects and run experiments on their capability of accurately simulating the final appearance of a multi-layered automobile paint structure. We also compare the performance of each model providing their computation times in the experiments. Finally, we provide a table for the readers which summarizes the complex special effects included in each model.}, number={72}, publisher={Dokuz Eylül Üniversitesi}, organization={Scientific and Technical Research Council of Turkey (TÜBİTAK)}