Virtual environments containing humans moving and performing actions in real time are ubiquitous in computer graphics applications. Such characters are often clothed in woven fabrics. This paper presents a technique for visualizing woven clothes in real time, while optimizing the realistic appearance. The proposed approach supports rendering of complex weave patterns by adopting Weaving Information File (WIF), a standard from textile Computer Aided Design (CAD) for representing the grammar of weaving. We develop a realistic rendering scheme by combining the grammar representation obtained from the WIF with a procedural thread texture, a suitable cloth Bi-directional Reflectance Distribution Function (BRDF) and horizon maps. We employ the multi-texturing approach to meet the real time constraint. Thus our approach to visualizing woven clothes begins from weaving grammar specifications and converts them into textures that can be applied on clothes. We demonstrate the versatility of the proposed approach with examples.
The cultural heritage of a region is conveyed by both tangible physical artifacts and intangible aspects in the form of stories, dance styles, rituals, etc. Hitherto, the task of creating digital representations for each of these aspects has been addressed in isolation, i.e. using specific media most suited to the artifact such as video, audio, three-dimensional (3D) models, scanning, etc. The challenge of bringing together these separate elements to create a coherent story, however, has remained unaddressed until recently. In this paper we present a unified digital framework that enables the integration of disparate representations of heritage elements into a holistic entity. Our approach results in a compelling and engaging narration that affords a unified user experience. Our solution supports both active (user-controlled explorations) and passive (watching pre-orchestrated narrations) user interactions. We demonstrate the capabilities of our framework through a qualitative user study based on two rich interactive narratives built using our framework: (1) history and folklore surrounding a temple in South India, and (2) a historical account of an educational institution also in South India.
Visualization of fluids has wide applications in science, engineering and entertainment. Various methodologies of visualizing fluids have evolved which emphasize on capturing different aspects of the fluids accurately. In this survey the existing methods for realistic visualization of fluids are reviewed. The approaches are classified based on the key concept they rely on for fluid modeling. This classification allows for easy selection of the method to be adopted for visualization given an application. It also enables identification of alternative techniques for fluid modeling.
Geographic maps have existed from early stages of human civilization. Various styles of visualizing the geographic information have evolved depending on the nature of information and the technology available for visualization. This has led to innumerable map styles. In this work we develop a technique to create maps by combining two-dimensional and three-dimensional information such that the resulting maps are both functional and aesthetically appealing. Our technique requires geographical information in vector form and aerial images as inputs. We use computer vision based approaches and user defined inputs to augment the vector data with information that is required to create stylized maps. We define procedural graphics methods to generate a range of geographic elements that can be composed together into a stylized map. We demonstrate our technique by generating example maps of a region in Las Vegas.
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