Selasa, 24 Desember 2013

How can I use my webcam as a security camera?

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bablyon_20


Hi;
I'd like to be able to use my webcam to take a picture when it detects motion within it's field of vision, and send it to an email address - something similar to Mugshot, (except that doesnt support authenticated SMTP by the looks of it, unless by request). Does anyone out there know of any similar product?



Answer
IP surveillance technology has reached one of those "perfect storm" moments. Today's digital cameras are inexpensive and easy to install. Wired and wireless networks alike are ubiquitous. And the camera-monitoring software is robust, easy-to-use and often free. Demand for security cams is high among both businesses and home users, and system builders stand to capitalize on this surging wave by offering installation services and support. There's even potential for computer and server upgrades, as some companies will be looking to build dedicated systems that have guaranteed bandwidth and quality of service (QoS) over the video network.
Cameras are popping up all over the place. You can find them at retail businesses, factory floors, homes, apartments, landmarks, schools, financial institutions and transportation centers, to name but a few. Applications range from basic security and safety to quality control monitoring.

Although you can use these cameras over the Web, they're not really Webcams, which are those small, low-tech cameras designed for online socializing. Rather, IP-based cameras connect directly to IP networks, record at higher frame rates, and generally have better resolution then Webcams. They can pan, tilt and zoom, and many have one-way or two-way audio capabilities. They also come with monitoring and management software that lets you trigger alarms and e-mail alerts when certain events occur. For example, you can designate motion detection areas within a frame that generate alerts when motion occurs. Or you can set the system to begin recording when certain events occur or timers are set. Examples of motion events might include a person walking into the frame or a car driving across a designated area.

Since these systems are IP-based, you can monitor, store, and archive video, audio and associated application data over the Internet or across private data networks. The video can be carried anywhere the IP network extends, as opposed to closed-circuit television (CCTV) systems that require proprietary equipment and dedicated coaxial cabling. Anyone with the proper security clearance and a standard browser can monitor video, and control and configure the cameras on the network.

You need to have a fairly robust wired or wireless network set up for a successful IP surveillance roll-out. This Recipe assumes that you have a typical 10/100 wired or 802.11g wireless network already set up. We will, however, look at some Power over Ethernet (PoE) networking equipment and discuss the advantages of that type of system as well. PoE allows you to send power over ethernet lines so you don't have to place the cameras near power sources.

Finally, a note on what all this will cost you. Simply put, pricing will depend on several factors you'll need to carefully consider: Labor rates, the camera(s) selected, the structure of the building(s), the location of power outlets, the location of network infrastructure, etc.

Big Benefits

A quick rundown of the main benefits of IP surveillance follows. Use these points when pitching solutions to your customers, and they will quickly recognize the advantages.


â¢Utilizes existing IP infrastructure.
â¢Highly scalable.
â¢Flexible camera placement: PoE eliminates need for local power source; Wi-Fi eliminates need for hard-wired ethernet cable. Wi-Fi stands for Wireless Fidelity, and Wi-Fi is pretty much a noun these days, and has even become synonymous with the more generic term "wireless."
â¢Remote viewing from anywhere/anytime via a standard Web browser.
â¢Standards-based, allowing multi-vendor solutions and integration.
â¢Better image quality than closed circuit TV (CCTV) analog systems.
â¢Open storage and server systems scale easily and cheaply, with no need for specialized recording equipment or training.
â¢Secure: Data can be encrypted across the network, so only the cameras and servers know what kind of packets to expect across the system. Without the proper authentication keys, outsiders can't break into the network to steal video data or feed false video into the system. Also, any interruption to the data stream can automatically trigger alarms and alerts.
Ingredients

Let's get into the two main areas of componentsâthe cameras and the networkâthat we'll need for building out an IP camera surveillance system.

Cameras: Most professionals are deploying products from D-Link of Fountain Valley, California. The company has been around for 20 years, and it offers quality cameras at reasonable prices. I recommend them.

I tested D-Link's DCS-6620G, DCS-5300G, DCS-3220G, DCS-2120 and DCS-950G cameras. I've listed them in order from fully featured to bare-bones. The DSC-6620G is the deluxe model, with all the ......MORE http://www.crn.com/white-box/192202279;jsessionid=QHVPJ5ULF1U3ZQE1GHOSKH4ATMY32JVN?pgno=2

Any tips for installing a security camera indoors but so window glare won't obscure the image?

Q.


Answer
The placement is important, but so too is the lighting behind the lens, directed at any subject.

Most loss of features is caused by back light against the subject, creating the subject to be sillouette/blacked out.

If your Q involves shooting film through a window, the window would have to be coated non reflectively, or the cam lens would have to be at the glass. If the intent is shooting in daylight you may still have the issue of backlight




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