614 is a low-cost MPEG-4/2/1 and MJPEG frame grabber that
captures full-frame (720 x 480) video at 30 frames per second.
Uncompressed video is available through the PCI bus for previewing and
capturing. It also has two synchronized audio input channels and an
advanced image overlay feature that is fully implemented with hardware.
The 614 can function as a conventional frame grabber by supplying
uncompressed video with low latency and snapshots of single frames.
614 performs motion detection in three user programmable regions of
interest. For each separate region of interest, the user can set up
different motion detection sensitivity. Within the regions of interest
motion can be further localized to a 16x16 pixel block. The following
links show examples of the motion detection setup menu for Windows and
the regions of interest. The motion map shows where the motion was
detected. (Please see image under the tab: Images and Mechanical
audio from the 614 is multiplexed into MPEG streams by a
Sensoray-supplied software in the SDK. Hence, the 614 does perform A/V
multiplexing as do the models 314 and
616. The audio signal can be connected to the 614 via a stereo audio jack or through the 24pin header.
Advantages of compression
MPEG and MJPEG data reduces the amount of memory required to store full
motion video. The compressed data requires a smaller transmission
bandwidth. MJPEG data is typically compressed by a factor 20 while
MPEG-2 and -4 by a factor of 100. Image compression makes it possible
to transmit 30 frames/sec of MPEG video over the PCI bus. The hardware
compression circuit uses a motion estimation algorithm to produce
smooth images from interlaced cameras.