User`s manual

STH-MDCS USER’S MANUAL 2001 VIDERE DESIGN
7
data type, sending the left stereo image in Y, and the right image in the UV
pixels.
Each image from the stereo camera has 8-bit pixels. In the case of the color
version (STH-MDCS-C), the color information is encoded as a Bayer
pattern in the same 8-bit pixel image.
On the host computer, the SVS interface software takes the YUV stream
and parses it into the left and right images, making them available as
separate images in computer memory. It also performs color processing,
for the STH-MDCS-C, converting the Bayer pattern into full-color RGB
images.
Smaller frame sizes are also available using on-host binning. Binning
averages neighboring pixels to produce a smaller image with improved
noise characteristics. Binning available through the SVS software produces
320x240 images from 640x480 input, or 640x480 images from 1280x960
input.
Format Frame
size
Frame
rates
Format 0, Mode 3
YUV 16 bits
Left image on Y, right
image on UV
640x480 3.75, 7.5, 15, 30 Hz
Format 2, Mode 0
YUV 16 bits
Left image on Y, right
image on UV
1280x960 3.75, 7.5
Table 1 Frame formats and sizes for the STH-MDCS/-C.
Left
Imager
Right
Imager
Interlace
Electronics
Imager
module
1394
Interface
Electronics
1394
module
8-bit pixels
12 MHz per
ima
g
er
Interlaced
p
ixels
24 MHz
1394
Digital
Cable
1394
imaging
commands
Digital
Video
Stream
1394
commands
Figure 3-2 Schematic of the STH-MDCS/-C electronics.