PURPOSE Accurate characterization of diagnosis instruments is crucial in medical applications such as radiology and clinical neurosciences. While classical CRT medical displays have been replaced almost exclusively with liquid crystal devices (LCDs), the assessment of their temporal properties (response times) is still largely based on heuristic methods, which have not been evaluated thoroughly...

A real-time display system has been designed and tested for use with a radiation field monitor. The system uses only pulse and waveform generators, a multiplexer, and an oscilloscope. The display consists of either a three-dimensional representation of the field intensity distribution or a series of simultaneous profiles.

左右の視差で奥行を知覚する両眼視差方式の 3D映 像ディスプレイシステムは,現在本格的な実用化に 至っている.しかしながら,この方式では水晶体によ るピント調節からもたらされる立体感を刺激しないた め,視距離が近い場合,観察者のふくそうとピントの ずれ,いわゆるふくそう調節矛盾を発生し,眼精疲労 を引き起こす要因となる. 一方,ホログラフィは光の波面そのものを再生する ため,両眼視差だけではなく人間が有する全ての奥行 知覚や運動視差機能を複合的に刺激し,全く違和感の ない完全な 3D映像を再生することができる.古典的 なホログラフィは写真技術であるが,近年のコンピュー タの飛躍的な技術発展に伴い,現在では実在しない 物体の干渉縞を作成することも可能となりつつある. これを計算機合成ホログラム(Computer-Generated Hologram,以下 CGH)と呼ぶ.近年我々は,新...

Ubiquitous vital signs sensing using wireless medical sensors are promising alternatives to conventional, inhospital healthcare systems. The advent of modern age has shown a drastic shift in the way humans have worked leading into sedentary lifestyles. Change in dietary pattern where fresh food is replaced by processed and fast food along with the increase of stress has led to rise of cardio-va...

Despite their esoteric sounding title, computer-generated holograms (CGHs) are now commonplace in a wide variety of applications and are a vital component in some surprisingly familiar consumer products. Such devices can be realized as fixed, etched structures and are commonly called diffractive optical elements (DOEs) or displayed on dynamically addressable liquid-crystal on silicon (LCOS) mic...

Rendering and animating in real-time a multitude of articulated characters presents a real challenge and few hardware systems are up to the task. Up to now little research has been conducted to tackle the issue of real-time rendering of numerous virtual humans. However, due to the growing interest in collaborative virtual environments the demand for numerous realistic avatars is becoming strong...

We describe methods for managing the complexity of information displayed to people responsible for making high-stakes, timecritical decisions. The techniques provide tools for real-time control of the con guration and quantity of information displayed to a user, and a methodology for designing exible human-computer interfaces for monitoring applications. After de ning a prototypical set of disp...

Several methods of increasing the speed and simplicity of the computation of off-axis transmission holograms are presented, with applications to the real-time display of holographic images. A bipolar intensity approach enables a linear summation of interference fringes, a factor of two speed increase, and the elimination of image noise caused by object self-interference. An order of magnitude s...

Real-time visual displays have found application to be tested as part of a recently funded pilot project to investigate the usefulness or otherwise of computer displays in the singing studio. Following previous work that suggests that simple displays of a small number of analysis parameters are generally the most effective, the system makes available analyses plotted against time that relate to...

The computerized process of reconstructing white matter tracts from diffusion MRI (dMRI) data is often referred to as tractography. Tractography is nowadays central in structural connectivity since it is the only non-invasive technique to obtain information about brain wiring. Most publicly available tractography techniques and most studies are based on a fixed set of tractography parameters. H...