CGV: Small: Measurement-based Editing of Reflectance Properties in Photographs

该项目试图回答一个基本的研究问题，即是否有可能通过测量来部分描述场景的外观，从而改变场景照片中特定反射特性的外观。具体来说，研究小组研究了新颖的外观编辑技术，这些技术可以最大限度地减少建模工作量，同时保持最大的编辑灵活性，同时对场景施加最小的限制，同时保证物理上合理的编辑结果。外观建模的一个常见应用是数字克隆一个真实世界的场景，然后改变一些场景属性，最后重新设计场景。尽管在外观建模方面取得了巨大的进步，但创建物理场景的数字克隆仍然需要大量的努力和专业知识。与所需的外观建模工作相比，对场景进行所需更改所需的努力往往显得微不足道。本项目重点研究适合于基于测量的编辑的三种反射现象：半透明、表面反照率和表面反射率。这个研究项目的影响远远超出了计算机图形学。它有可能影响产品开发和预可视化、考古文物的虚拟重建、法医、虚拟化妆品、美术和娱乐，以及其他需要在改变反射条件下对物体/主体进行可视化的应用。除了支持研究生的传统研究角色外，通过实践研究经验和将研究成果纳入现有课程来加强本科教育。

This project endeavors to answer the fundamental research question whether it is possible to alter the appearance of specific reflectance properties in a photograph of a scene by only partially characterizing the appearance of the scene via measurements. Specifically, the research team investigates novel appearance editing techniques that minimize the modeling effort, while maintaining maximum editing flexibility and at the same time impose minimal restrictions on the scene, while guaranteeing a physically plausible editing result. A common application of appearance modeling is to digitally clone a real-world scene, then change some scene properties, and finally revisualize the scene. Despite the enormous advances in appearance modeling, it still requires significant effort and expertise to create a digital clone of a physical scene. The effort needed to make the desired alterations to the scene often pales in comparison to the required appearance modeling effort. This project focuses on three reflectance phenomena suited for measurement-based editing: translucency, surface albedo, and surface reflectance.This research program has a far-reaching impact beyond computer graphics. It has the potential to impact product development and pre-visualization, virtual reconstruction of archaeological artifacts, forensics, virtual cosmetics, fine-arts and entertainment, and other applications that require the visualization of an object/subject with altered reflectance conditions. Besides supporting the traditional research roles of graduate students, undergraduate education is enhanced by hands-on research experience and the incorporation of research results into existing courses.