نتایج جستجو برای: projection screen

تعداد نتایج: 130258  

2009
John Crawford Lisa Naugle

In NightDriving, a semi-transparent projection scrim filling the width and height of the stage brings real and virtual dancers into the same field of view. The resulting shared visual space contains two kinds of representation: a “here and now” embodiment of the dance through the live performers, and projected dance film imagery of virtual figures in counterpoint to the live dancers. This share...

2015
Fakhrul Hazman Yusoff Muhammad Amirul Azhar

Usage of a projection system to display large screen images is still relevant in the midst of LED-based display increasing popularity. This is due to that the system itself is a mature technology, reliable and cheaper than the LED counterpart. While various methods had addressed the projection problems on curve surface, projecting image on jagged like surface (zero order geometric continuity) h...

2017
Behrang Keshavarz Martina Speck Bruce Haycock Stefan Berti

Illusory self-motion (vection) can be generated by visual stimulation. The purpose of the present study was to compare behavioral vection measures including intensity ratings, duration, and onset time across different visual display types. Participants were exposed to a pattern of alternating black-and-white horizontal or vertical bars that moved either in vertical or horizontal direction, resp...

2003
Mark Hereld

We describe a new method for accurately measuring the relationship between pixel coordinates of neighboring projectors in a tiled projection display. The method can be used to calibrate the alignment and distortions in the tiled display and to touch up existing calibrations with local corrections. Additionally, by simultaneously measuring the characteristic spacing of textural features on the s...

2015
Wataru Hashimoto Yasuharu Mizutani Satoshi Nishiguchi

The main purpose of this study is to develop a piece of software for the construction of spherical immersive displays. In the process of designing spherical displays, it is necessary to consider about optical design before their construction. A dome-shaped screen usually produces some distortion on the projected image. The pre-distortion method is generally used to compensate that distortion. O...

1998
W. Brent Seales Greg Welch Christopher O. Jaynes

ÑThis paper explores a new depth-recovery technique targeted for two environments: visualization on non-regular screen surfaces, and real-time depth recovery in an unknown scene. The algorithm is based on the computation of pre-warped images that are projected into the scene and re-imaged by synchronized cameras. The real-time control of the pre-warp and the type of imagery projected into the s...

2007
Sheng Liu Chunyu Gao Hong Hua

The paper presents the illumination engineering for a low-cost multi-touch projection screen. Eight near infrared emitting diode (IRED) strips with optimized line densities serve as illumination sources for the finger tracking. The design achieves highly uniformed illumination, with an illumination efficiency of 55% and contrast of 0.098. Implementation and experimental results are presented. O...

2000
W. P. Bleha

Introduction JVC is leading the way to the next generation of high-resolution large screen projection displays with the continuing development of the D-ILA™ technology. The D-ILA technology builds on the high luminance, high resolution ILA™ Super Projectors that established new standards of projector excellence over 7 years ago.

2004
Rahul SUKTHANKAR

Oblique projection geometry is a major factor in display luminance non-uniformity. Feedback from an arbitrarily-positioned camera is used to find homography transformations between projector and screen. From this we determine the ratio of pixel areas to flatten the illumination field.

2015
Jason Deglint Andrew Cameron Christian Scharfenberger Mark Lamm Alexander Wong David Clausi

Showing a checkerboard at different poses for camera projector calibration is impractical for large scale applications such as projection mapping onto buildings. We use an automatic calibration technique that projects Gray code structured light patterns, which, extracted by the camera, build a dense correspondence for calibration. Two applications benefit from automatic calibration: 3D model ge...

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