Distant pointing at large displays allows rapid cursor movements, but can be problematic when high levels of precision are needed, due to natural hand tremor and tracking jitter. We present two ray-casting-based interaction techniques for large high-resolution displays – Absolute and Relative Mapping (ARM) Ray-casting and Zoom for Enhanced Large Display Acuity (ZELDA) – that address this precis...

Issues such as hand and tracker jitter negatively affect user performance with 3D selection techniques based on the ray-casting metaphor. This makes it difficult for users to select objects that have a small visible area, since small targets require high levels of precision. We introduce an approach to address this issue that uses progressive refinement of the set of selectable objects to reduc...

A two-year program was conducted to develop and commercially manufacturing technologies to: • Enable significant reductions in the costs of castings, • Increase the complexity and dimensional accuracy of castings, and • Reduce the development times for delivery of high quality castings. implement selected casting The industry-led R&D project was cost shared with NASA's Aerospace Industry Techno...

Aerospace, manufacturing, and shipbuilding industries strive to enhance their competitiveness by optimizing material utilization improving production processes. The investment casting process offers the capability fabricate intricate precise components using a diverse range of alloys. However, this method is not without its drawbacks, including high manufacturing costs significant rate defectiv...

The marginal fit is one of the most important criteria for long-term success of all-ceramic restorations.[1] When considered clinically, a casting becomes acceptable only when the marginal gap between the prepared tooth and the casting is indiscernible both visually and also while probing. The marginal gap may lead to increased retention of plaque. This changes the distribution of microflora as...

We present Handymap, a novel selection interface for virtual environments with dense datasets. The approach was motivated by shortcomings of standard ray-casting methods in highly cluttered views such as in our visualization application for coalbed methane well logs. Handymap uses a secondary 2D overview of a scene that allows selection of a target when it is occluded in the main view, and that...