 | Trivisio: Camera Options |
The integrated color cameras are availble in two different versions:
For most mixed reality applications the camera signals must be digitized to superimpose the image by computer generated signals (see mixed-reality). If using analog cameras this can be done by frame grabbers such as TV-cards or graphic cards with integrated video-in functionality or by special grabbing hardware. If moving the head fast (rotating from left to right) the disadvantages of PAL/NTSC cameras are interlaced artefacts which decreasing the quality of image recognition.
In some HMD designs the lenses can be changed manually by user.
| Digital Cameras |
| Camera Type | USB 2.0+ | USB 2.0*
| FireWire | | Resolution | 640x480 (754x482 array) | 1280x1024 | 640x480** | | Chip | 1/3" Wide CMOS | 1/2" | 1/3"Sony CCD
| | Sensitivity | ~ 1 Lux @ F2 | 1.8V/lux-sec @ 550nm | N/A | | Refresh Rate | 69fps progressive, bayer pattern | 14fps (SXGA), 20fps (XGA), 30fps (SVGA), 40fps (VGA) progressive
| 80fps** progressive | | Shutter | global | rolling
| global | | Output Signal/Plug | USB 2.0 (USB Mini-B) | USB 2.0 (USB
Mini-B) | bilingual 9-pin IEEE-1394b | | Output Stereo-Version | single USB (optional 2 independent USB) | -
| 2 independent FireWire | | FOV diag | 52° | 53°
| depends on lens
| | Lens | f=6.8mm
M9x0.5 | f=7.5mm
M12x0.5 | f=?
M12x0.5
| | Gain/Whitebalance | automatic or manually by software | automatic or manually by software | automatic or manually by software | | Power Consumption | 1.6W
(from USB) | 1.0W
(from USB) | <2.5W
(from FireWire) | * only for M3-tracking-USB ** Hi-resolution cameras available: 1024x768 30fps, 1280x960 30fps, 1360x1024 15fps, 1600x1200 15fps, 2448x2050 7.5fps | Analog Cameras |
| Camera Type | PAL | NTSC | Lipstick PAL | Lipstick NTSC | | Resolution | 768x576
470 TV lines | 640x480 | 752x582
480 TV lines | 768x494
480 TV lines | | Chip | 1/3" CCD | 1/3" CCD | 1/4" Color IT CCD | 1/4" Color IT CCD | | Sensitivity | 0.8 Lux @ F1.2 | 0.8 Lux @ F1.2 | 1.1 Lux @ F1.2 | 1.1 Lux @ F1.2 | | Refresh Rate | 50fps interlaced | 60fps interlaced | 50fps interlaced | 60fps interlaced | | Shutter | ? | ? | ? | ? | | Output Signal/Plug | PAL / RCA (Cinch) | NTSC / RCA (Cinch) | PAL / BNC | NTSC / BNC | | Output Stereo-Version | 2 independent PAL | 2 independent NTSC | / | / | | S/N Ratio | >52dB | >52dB | >48dB, AGC Off | >48dB, AGC Off | | FOV diag | 40° | 40° | 53° | 53° | | Lens | f=8mm
M12x0.5 | f=8mm
M12x0.5 | f=4mm
Micro | f=4mm
Micro | | Gain/Whitebalance | automatic | automatic | automatic or manually or push-to-set | automatic or manually or push-to-set | | Power Consumption | 1W
(12V/90mA
from HMD) | 1W
(12V/90mA
from HMD) | 2.6W
(12V/220mA) | 2.6W
(12V/220mA) |
| Trivisio Prototyping GmbH
Karcherstrasse 10
67655 Kaiserslautern
Germany | tel: +49-631-4125111
fax: +49-631-4126127
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Digital / Analog