What is DEPA Architecture?
In conventional video analytic systems, the camera only sends video images to recorders, and video image analysis is processed solely on the recorder side.
In Sony’s DEPA system, the DEPA-enabled camera sends to the DEPA-enabled recorder not only video images but also related metadata such as the camera ID, date/time, and information about the shot object (size and position). The recorder checks this metadata with a search filter called a VMF (Video Motion Filter), to send an alarm signal when the metadata matches a preset condition of the VMF. Since the partial image processing is done on the camera side, the system can be configured in a much simpler manner, and can be expanded more easily.
Concept of DEPA Architecture
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Search Results by Timeline or List | Timeline Mode |
The search result on the NSR-100/1100/1050H is displayed either by timeline or list (6). In a timeline chart, search results are displayed in different colors depending on the type of recording. You can easily playback video just by clicking on a specific part of the timeline, or on the list.
List Mode
Versatile Recording Functions
There are various recording functions on the NSR-100/1100/1050H:
Manual Recording
Manual Recording is started manually anytime the operator wants.
Schedule Recording
Schedule Recording is started based on a set schedule.
Alarm/Event Recording
There are two types of alarm-triggered recording – Alarm and Event (i.e.,Activity) Recording. While it is important to initiate recordings based on video motion detection or alarm signal input, it is also helpful if the user can define what is considered an alarm. For example, a camera may be looking at an area where there are people moving about during office hours, but the recording of such motion should not be considered a true alarm; it is rather a normal event or activity. However, such motion out of office hours should be considered a true alarm, and an action or alert needs to be initiated. The former is performed by Event Recording and the latter by Alarm Recording. The date/time of Alarm Recording is listed in an Alarm List in the main GUI (but this does not occur with Event Recording). Having this capability accomplishes two things
–it saves on storage (with motion/alarm recording only), and reduces seek times when searching Alarms and Events.
Schedule Recording with Alarm Marking
While using Schedule Recording, the time when the alarm is detected can be marked in the timeline. This function enables images to be searched quickly.
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