380 likes | 474 Vues
Ten Reasons to Buy a Network Camera. or what your analog camera vendor won’t tell you. Focus. 10 of the most important functional differences between analog and network cameras. 1 – End to interlace problems. 1 – End to interlace problems. Interlaced scan
E N D
Ten Reasons to Buy a Network Camera or what your analog camera vendor won’t tell you
Focus 10 of the most important functional differences between analogand network cameras
1 – End to interlace problems • Interlaced scan • Each image formed from two interlace fields • Blurriness from capturing moving objects, even when connected to a DVR Progressive scan Crystal clearimages evenwith a highdegree of motionin the scene Entire imagecaptured atone time • Benefits • Superior image quality • Full image details • Precise, accurate information
1 – End to interlace problems En komplett bildruta med progressiv scan One complete frame using progressive scan
Interlaced scan Progressive scan 1 – End to interlace problems
2 – Power over Ethernet • Not available IEEE802.3af No need forpower outlet at cameralocation Industry standard • Benefits • Cost savings • Reliability with centralized power backup • Simple installation
2 – Power over Ethernet Both network cameras with andwithout built-in support for PoEcan take advantage of a UPS device
3 – Megapixel resolution • Stuck with NTSC/PAL resolution • 0.4 Megapixel at 4CIF and 0.1 at CIF • Limited image details Many resolutions Different aspect ratios 1 megapixel is 10x theresolution of CIF,2 megapixel is 20x! Digital PTZ • Benefits • More details, easy identification • Digital PTZ, higher reliability and simultaneous pan/tilt
3 – Megapixel resolution Megapixel CIF
Aspect ratios 3 – Megapixel resolution Resolution comparisons
4 – Intelligence at the camera level • Not available Intelligent video Purpose-built, highlyintegrated hardware Intelligent features: Built-inVMD, Alarm management,Image enhancement Intelligent algorithms:Number plate recognition,People counting • Benefits • More details, easy identification • More productive and effective means of surveillance • Event-driven • Scalable systems
4 – Intelligence at the camera level Included Excluded Excluded Included Hallway Door
5 – Integrated PTZ input/output control • Cabling separate from the video signal • Costly and cumbersome PTZ control overthe same networkthat transportsthe video PTZ commandssent over theIP network Integrated I/O can trigger anything and be triggered by anything • Benefits • Less cabling, cost savings, increased functionality and integration potential
5 – Integrated PTZ input/output control Example: Typical I/O use –integration with alarm
6 – Integrated audio • Only possible with separate audio lines to the DVR Audio captured atthe camera Synchronized withthe video Two-way audio (duplex, half duplex, simplex) Can be integrated intothe same video stream • Benefits • Many possibilities: simplex, half duplex, full duplex • Synchronized audio and video • Easy to install, cost savings
6 – Integrated audio Example: Communicate andopen a door remotely • Entrance control • Remote dialog and gate/door control • Listen in on remote sounds • Audio surveillance • Provide audio feedback to surveillance scenes
7 – Secure communication • No encryption • No authentication • Anyone can tap into the video or replace the signal from a camera with another video signal Video encryption Authentication usingencrypted certificates Privacy Authorization: to verify and approve the identity of the device • Benefits • Secure image capture • Secure transmission • Evidence trail secured
7 – Secure communication • Examples of achieving privacy • VPN • SSL/TLS (HTTPS)
8 – Flexible, cost-effective infrastructure choices • Expensive coax, proprietary fiber, wireless • Distance affects image quality • Adding power, I/O and audio further complicates this situation IP = established,standardized,interoperable Digital images =no quality reduction A single network wire =hundreds of simultaneousfull frame rate video streams Many streamstransmittedover the same line • Benefits • Image quality, flexibility, scalability, future-proof • Resulting costs comparatively low
8 – Flexible, cost-effective infrastructure choices IP in security IP in BuildingManagement Systems TheIP way IT– Securityconvergence IP inIndustrialSolutions IP in VoiceOver IP
9 – True digital solution • With every conversion image quality is lost: • Analog signal digitized in camera’s DSP • Digital signal converted back to analog for transport over coax • Signal once again digitized at the DVR for recording Images digitalized once Stay digital No image degradation No unnecessaryconversions • Benefits • Superior image quality
10 – Lower total cost of ownership COMPARE • The cost per channel • Flexibility and performance CONSIDER • Back end applications and storage • Industry standard, open-system based servers vs. proprietary hardware like a DVR • Infrastructure used • Can it be leveraged for other applications?
Conclusion The future belongs tonetwork cameras
The future belongs to network cameras Market reports Remote accessibility Easy, future-proof integration Scalability and flexibility Cost-effectiveness Distributed intelligence Proven technology
This is Axis The best in network video! • Worldwide #1 in network video • The world’s leading expert • Broadest product portfolio in the industry • The largest installed base of network video products • Over 20 years of networking excellence • Worldwide presence • Global partnerships
Invitation to Axis Communications’ Academy #1 in network video knowledge Designed to boost our partners’ expertise about Axis network video solutions Several training levels, from basic to advanced Run by Axis, executed by local trainers in native language Around 7,000 individuals trained as of 2007 www.axis.com/partner
Questions & Answers Thank you!