Guia tecnica para camaras de red

Technical guide to network video.

Technologies and factors to consider for the successful deployment of IP-based security surveillance and remote monitoring applications.

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Welcome to the Axis technical guide to network video
The move to open video systems—combined with the benefits of networking, digital imaging, and camera intelligence—constitutes a far more effective means ofsecurity surveillance and remote monitoring than has ever been reached before. Network video provides everything that analog video offers, plus a wide range of innovative functions and features that are only possible with digital technology. Before setting up your own system, you need to consider what features are required. It is equally important to consider factors such as performance,interoperability, scalability, flexibility and future-proof functionality. This guide will walk you through these factors, helping you to achieve a solution that fully takes advantage of the potential of network video technology.
The best in network video Axis is the global market leader in network video. We were first to bring the benefits of network video technology to professional video surveillance andremote monitoring applications, introducing the world’s first network camera in 1996. With more than two decades of experience in networking technologies, the largest installed base of network video products, as well as strong partnerships with leading players across all continents, Axis is the partner of choice in network video. Flexible, scalable solutions Using open technology standards that enableeasy integration and scalability, Axis offers a full range of network video solutions for surveillance and remote monitoring applications in a broad spectrum of industry segments. Our cutting-edge portfolio comprises network cameras that redefine the categories they represent, as well as video encoders that enable cost-effective migration to the best in network video technology. Our offering alsoincludes comprehensive video management software solutions and a full range of accessories.

TABLE OF CONTENTS

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Table of contents
Network video: overview, benefits and applications 7
1.1 1.2 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.3.6 1.3.7 1.3.8 Overview of a network video system Benefits Applications Retail Transportation Education Industrial City surveillance Government HealthcareBanking and finance 7 8 12 12 12 12 13 13 13 13 14

2.1 2.2 2.2.1 2.2.2 2.2.3 2.3 2.4 2.5 3.1 3.2 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 3.3 3.3.1 3.3.2 3.3.3 3.4 3.4.1 3.4.2 3.5 3.5.1 3.5.2 3.5.3 3.6

Network cameras

What is a network camera? Types of network cameras Fixed network cameras Fixed dome network cameras PTZ cameras and PTZ dome cameras Day and night network cameras Megapixel networkcameras Guidelines for selecting a network camera

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15 16 17 17 18 21 23 24 27 28 28 30 31 31 32 33 34 34 34 35 35 35 36 37 37 37 37 38

Camera elements

Light sensitivity Lens elements Field of view Matching lens and sensor Lens mount standards F-number and exposure Manual or automatic iris Depth of field Image sensors CCD technology CMOS technology Megapixel sensors Image scanningtechniques Interlaced scanning Progressive scanning Image processing Backlight compensation Exposure zones Wide dynamic range Installing a network camera

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TABLE OF CONTENTS Camera protection and housings 39
39 40 40 41 41 41 42 43 43 43 43 44 44 44

4.1 4.2 4.3 4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.6 4.6.1 4.6.2 4.6.3 4.6.4

Camera enclosures in general Transparent covering Positioning afixed camera in a housing Environmental protection Vandal and tampering protection Camera/housing design Mounting Camera placement Intelligent video Types of mounting Ceiling mounts Wall mounts Pole mounts Parapet mounts

Video encoders
5.1 5.1.1 5.1.2 5.2 5.3 5.4 5.5 5.6 6.1 6.2 6.3 6.4

What is a video encoder? Video encoder components and considerations Event management and intelligent...