Although current photorealistic rendering techniques can produce very impressive images, the rendered objects are often too clean and shiny. Thus, the resulting images look unnatural. This paper proposes a physically-based model to simulate the appearance of patinas on ancient Chinese bronzes. Buried in the soil for thousands of years, many patinas are found on the surface of ancient bronzes as...

Integrating Tangible User Interfaces (TUIs) in Virtual Environments is a promising approach to overcome the rigidity of Tangible User Interfaces (TUI) and to ease Virtual Reality (VR) interaction techniques. Advantages and problems of the integration are being described, especially occlusion, focal displacement and shifting.

OBJECTIVE The challenges of the first-trimester examination of the fetal heart may in part be overcome by technical advances in three-dimensional (3D) ultrasound techniques. Our aim was to standardize the first-trimester 3D imaging approach to the cardiac examination to provide the most consistent and accurate display of anatomy. METHODS Low-risk women with normal findings on first-trimester ...

OBJECTIVES To determine the prevalence of evidence of residual obstetric anal sphincter injury, to evaluate its association with anal incontinence (AI) and to establish minimal diagnostic criteria for significant (residual) external anal sphincter (EAS) trauma. METHODS This was a retrospective analysis of ultrasound volume datasets of 501 patients attending a tertiary urogynecological unit. A...

In this paper we present a proof of concept for saving and restoring mechanisms for Tangible User Interfaces (TUIs). We describe our actuated Tangible Active Objects (TAOs) and explain the design which allows equal user access to a dial-based fully tangible actuated menu metaphor. We present a new application extending an existing TUI for interactive sonification of process data with saving and...