Published by atomas on November 30, 2007
in MIL.
This week we got our hands on the brand new Toshiba ex20 short-throw projector to test it in a rear projection setup. Some facts about the projector: XGA, 130% lens offset, ~0.68 throw-ratio (distance-to-image-width), 2300 Ansi lumen, DLP.
The test results were quite good. Because of the high lens offset it’s easy to use in combination with a mirror. The mirror and projector can be simply mounted in a angle of 90°. Furthermore, the projected image was really good. Especially, the usual DLP-”rainbow/flickering” was not strongly visible. At least not for our human eyes.
A drawback we figured out is the chroma error of the lens. At the top of the image the blue/yellow distortion is about the size of one pixel as it is visible in this picture. After some more tests we figured out that the yellow color is really nice after all. The test images yellow just wasn’t saturated enough.
A really impressive presentation was given at ICAT 2007 by Jonathan J. Hull (Ricoh). In his talk, Jonathan presented “Paper-Based Augmented Reality”, where he demonstrated a clickable paper. Check out this website for further information.
An interesting video about how to use the Wiimote for finger tracking.
A really smart LED projector is proposed by SAMSUNG. The P310 supports SVGA (native: 800 x 600, maximum: 1024 x 768) with 50 ANSI Lumen (1300 Lux), contrast 1000:1, picture format (4:3, 16:9), keystone correction (+/- 15°), and 25dB(A).
Speakers from Microsoft Research show how to give a great research talk. Really nice presentation! More can be found here.
Openframeworks by Zach Lieberman and Theodore Watson is available for download at http://openframeworks.cc.
A short description from the website: Openframeworks is a c++ library designed to assist the creative process by providing a simple and intuitive framework for experimentation. OpenGL for graphics, rtAudio for audio input and output, freeType for fonts, freeImage for image input and output, quicktime for video playing and sequence grabbing.
The DAT (Digital Art and Technology) exhibition runs from 10 November to 1 January 2008 at the Singapore Science Centre. This major year-end exhibition consists of the world-renowned Ars Electronica, iTokyo (Interactive Tokyo) exhibition from Tokyo, as well as an Open Call section for submissions on digital media locally and internationally. The exhibitions features new media and technologies displayed in an artistic format.
http://www.scienceexhibition.com.sg
The ISMAR workshop “Mixed Reality Entertainment & Art” has started. Jakob presented the collaborative tabletop game “Comino” which was attended by over 40 participants. Steven Zhou ZhiYing presented the first commercial available Augmented Reality product wIzQubesTM (besides Sony’s eyeToy), which you can get for 60 USD in Singapore. Actually, this games is designed for kids and allows them to create their own stories by moving physical cubes. Two cubes, with a embedded markers are tracked by a camera. In contrast to the ARToolkit, Steven tracks more marker surfaces at once which results in higher accuracy and less jittering.
Another highlight was the color changing on fabric using thermochromic ink. This work was demonstrated by James KS Teh, who is currently working at the Mixed Reality Lab of the National University of Singapore. The Japanese artist Dr. Ichi Kanaya also showed his very innovative and inspiring work, e.g. future furniture. The RGBy desk allows to illuminate an RGB-based table by putting colored paper on the surface. fuwapca suite is another project where he can illuminate furniture based on the users’ behavior.
Xerox presents a project how to make an erasable paper. More can be found here
Published by admin on November 6, 2007
in MIL.
Nortel visited our lab. We are planning to work together on an exciting new project. More infomation will be announced soon.
This week we got our hands on the brand new Toshiba ex20 short-throw projector to test it in a rear projection setup. Some facts about the projector: XGA, 130% lens offset, ~0.68 throw-ratio (distance-to-image-width), 2300 Ansi lumen, DLP.
A drawback we figured out is the chroma error of the lens. At the top of the image the blue/yellow distortion is about the size of one pixel as it is visible in this picture. After some more tests we figured out that the yellow color is really nice after all. The test images yellow just wasn’t saturated enough.
