The benefits of digital surveillance are many. At the camera level, the scalability of an IP-based system grows from a single camera to thousands in single unit increments, compared with 16-camera or channel steps for DVR or PC-based systems. In addition, any camera can be provided with any frame rate at any time, and frame rate and storage capacity can be increased simply by adding hard drives and PC servers. Moreover, IP allows "intelligent" functionality of camera, such as motion detection, sensor input, relay output and alarm triggering or even advanced intelligence like 'object left' or 'object missing'. Faster system integration allows one network that controls audio, video and data with remote accessibility of live or stored video streams from any location with increased reliability through real-time management software.
 |
|
|
Digital Video Surveillance Application |
|
IP surveillance technology uses analog video CCD cameras as video source. The analog video is then digitized in the Digital Video Server. This server uses compression and encoding technologies such as H.264, MPEG4 or Motion-JPEG and outputs the compressed streams via Ethernet (IP). These video streams can then be captured and recorded (stored) in a network attached VR (video recorder) and may be viewed live in real-time or later from mass storage. IP surveillance technology is superior to traditional analog recording in the following ways:
1. Uses computer database technology to store, search and retrieve previously recorded information
2. Quality; Digital technology does not degrade over time or with repeated playback as analog does
3. Scalability; easy expansion by simply adding more cameras and DVS
4. Cost; following initial installation costs, significant savings are realized in operations
 IP Surveillance Application |
|
|
