By Anthony C. Caputo
The use of electronic surveillance expertise is speedily growing to be because it turns into considerably more cost-effective for stay and distant tracking. the second one variation of Digital Video Surveillance and Security offers the most up-tp-date and whole reference for safety pros and experts as they plan, layout, and enforce surveillance structures to safe their locations of business.
By supplying the mandatory factors of phrases, innovations, and technological services, this revised variation addresses the most recent applied sciences and suggestions in the marketplace this present day. With transparent descriptions and specific illustrations, Digital Video Surveillance and Security is the single booklet that indicates the necessity for an total knowing 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 reports and most sensible practices
- Uses vendor-neutral comparisons of the newest digital camera apparatus and recording options
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Extra resources for Digital Video Surveillance and Security
5 Zooming. 56 DIGITAL VIDEO SURVEILLANCE AND SECURITY This 35× optical zoom factor is impressive enough, but the camera also provides additional 12× digital zoom capabilities, whereas once the maximum optical zoom is reached, the camera will enlarge the image to simulate another 12 times its size. The quality of digital zooms is limited to the number of pixels available to upsample. The fewer pixels (for example, CIF resolution), the less data the camera has to work with and the lower the zoom quality.
What this process accomplishes is simple. Let’s say that your DVS video is set to CIF, which is only 352 × 240 pixels in size. If your monitor is 1280 × 1024 pixels or your HDTV is 1920 × 1080, you’ve increased the size of the image to the full resolution of the monitor. However, that does not mean that all video graphics cards, monitors, or VMS applications will upsample the image (in other words, add additional pixels to fill in the gaps). If any one or all of those accomplish this task, you’re one step ahead.
Remember that the camera is just a piece of the overall solution. Consider the networking infrastructure and storage costs when deciding on the megapixel size and quantity. Also consider camera models with multiple megapixel options, since select area-of-coverage locations may not require full 5 MP and you can balance the network and storage load at a more granular level, camera by camera. Chapter Lessons A few things to keep in mind about digital video and media: • Bandwidth and hard drive space are crucial components in determining the level of digital video quality required.