By Anthony C. Caputo
The use of electronic surveillance know-how is speedily starting to be because it turns into considerably more affordable for dwell and distant tracking. the second one variation of Digital Video Surveillance and Security presents the most up-tp-date and whole reference for safeguard pros and specialists as they plan, layout, and enforce surveillance structures to safe their locations of business.
By offering the mandatory reasons of phrases, ideas, and technological services, this revised variation addresses the latest applied sciences and options on the market at the present time. With transparent descriptions and specific illustrations, Digital Video Surveillance and Security is the one e-book that exhibits the necessity for an total realizing of the electronic video surveillance (DVS) ecosystem.
- Highly visible with easy-to-read diagrams, schematics, tables, troubleshooting charts, and graphs
- Includes layout and implementation case reviews and top practices
- Uses vendor-neutral comparisons of the newest digicam gear and recording options
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Extra resources for Digital Video Surveillance and Security
The days are gone of the mechanical camera, when a single-lens reflex used a cadmium sulfide photocell as a light meter (light sensor) to assist in the correct aperture and shutter speed configuration, and the world is now run by the microprocessor. This is even truer with anything digital. This higher level of sophistication now requires a three-dimensional maintenance and troubleshooting view: mechanical, electrical, and software. The only power over a malfunctioning device is software by upgrading the firmware (embedded software that runs the hardware), and if there isn’t an updated firmware version to fix any problems, the only options are to either live with the problem or return the device.
Resolution The standard analog television format uses vertical rectangular pixels, but the new HDTV format is composed of the smaller square pixels (like computer monitors) of Chapter 2 • Digital Video Overview 31 the digital world. There are four and a half times more digital pixels in the same space used for an analog NTSC pixel (8-bit versus 32-bit), so it holds four and a half times more detail, creating a sharper image. All digital resolution is measured in these pixels, and all digital imagery, including printed material, is pixel-based.
2 Digital Color Depth Is the Number of Bits Per Pixel Number of Bits Number of Colors Formula 8 bits 256 colors 28 (2 × 2 × 2 × 2 × 2 × 2 × 2 × 2) 16 bits 65,536 colors 216 24 bits 16,777,215 colors 224 32 DIGITAL VIDEO SURVEILLANCE AND SECURITY system and high-end graphics card additional functionality to change resolutions or use dual-monitor displays. TECH TIP Different software video players and hardware monitors may not have the built-in functionality to adapt to select color depths, instead showing as solid black or receiving an error message regarding codec incompatibility.
Digital Video Surveillance and Security by Anthony C. Caputo