Ok, here is one that will probably seem a very dumb question to be asking. I have read many times about "day/night" cameras, "true day/night" cameras which I do not even know if it would be the same, so the question is as simple as "what is a day/night camera"? (or "true day/night", whatever).

Alas, without something like an FTC-enforced definition of the term, manufacturers are free to tack "true day/night" on any camera they want. So it's not really a good term to go by in the ad copy, unless it's a trusted brand name.


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So, ICR, ICF, removable IR filter, whatever... that's what you want to look for in the specs. If they list that, or something equivalent, then you can safely tell your customers that it's a "true day/night" without looking like a shyster

SimplicityHDCVI technology inherits the born feature of simplicity from traditional analog surveillance system, making itself a best choice for investment protection. HDCVI system can seamlessly upgrade the traditional analog system without replacing existing coaxial cabling. The plug and play approach enables full HD video surveillance without the hassle of configuring a network.Starlight TechnologyThanks to our experience and expertise in hardware and software development , the camera is equipped with the latest image processing algorithm, high performance hardware and high quality optical components, which make the camera have very excellent low light performance. In most conditions, this camera can deliver clear, bright and low-noise color images.Wide Dynamic RangeEmbedded with industry leading wide dynamic range (WDR) technology, vivid pictures are achieved even in the most intense contrast lighting conditions. For applications with both bright and low lighting conditions that change quickly, true WDR (120dB) optimizes both the bright and dark areas of a scene at the same time to provide usable video.EnvironmentalWith a temperature range of -40 C to +70 C (-40 F to +158 F), the camera is designed for extreme temperature environments. Subjected and certified to rigorous dust and water immersion tests, the IP66 rating makes it suitable for demanding outdoor applications.ProtectionThis camera suits even the harsh conditions for outdoor applications. Its 6KV lightning rating provides protection against the camera and its structure from the effects of lightning.

I have a DVR installed at my home with 2 cctv camera's of 720 TVL. I have got a static IP for the DVR so its ready to be published on the web. I want to view the recording/live streaming on my mobile phone. Need to understand what internet connection should i take at home. The bandwidth and usage limits for the internet. What would be the minimum speed requirements so that the streaming is good. Will 1 MBPS speed suffice? Also if I am viewing it 7 days, 8 hours each which is 56 hours how much GB will be utilized (approximately). I understand it all depends on the format and compression, but still a rough figure.

CCTV stands for closed-circuit television, and cameras in these systems run on an analog system. In a true CCTV system, there is never a connection to the internet. CCTV is a series of cameras connected to a recorder, known as the head end. The fact that these cameras and the head end never connect to the internet is what makes CCTV a closed circuit.

Instead, an IP CCTV system combines the best of both worlds. In these systems, each camera is not connected to the internet as it would be in a true IP cloud-based system. Each camera in the system connects to a head end, and then, that head end connects to the internet.

Security cameras with true WDR technology work by using advanced image sensors in conjunction with a Digital Signal Processor to produce a balanced image. The technology provides even illumination to every part of the image for optimal results.


Although these alternatives are good options, the image quality will not be the same as a true WDR camera. However, WDR cameras aren't necessary for everyone, so it's important to consider all your options thoroughly before making a decision.

Yes it a great idea to install CCTV Cameras to protect from terrorism. Now these days cctv cameras are very important to know about crime and terrorism. Even we need to install cameras in our home. I have also installed Revo security cameras in my home.

I can load up the cctv login page (using internet explorer as its the only broswer that the cctv viewer plugin supports), login and it loads the UI as normal then I press play to start the cctv feeds.

nothing happens.

There are two types of wide dynamic range (WDR) technologies used in CCTV/IP cameras: Digital WDR & True WDR. Digital WDR surveillance cameras use software algorithms to brighten dark areas and dim overly-lit areas in images while true WDR deploys light-sensitive sensors (CCD/CMOS) and DSP technology to balance lighting.

Backlight compensation (BLC) works by increasing the level of exposure for the entire image via digital signal processors (DSP), which divides an image or scene into different sections and adjust the lighting accordingly.

CCTV/IP cameras packed with WDR and BLC are capable of capture clear and balanced images/videos in various contexts. Digital WDR, which is cheaper than true WDR, is also used in many security cameras to enhance image quality, which also works fine even at night.

There are two types of wide dynamic range (WDR) technologies used in CCTV/IP cameras: Digital WDR & True WDR. Digital WDR surveillance cameras use software algorithms to brighten dark areas and dim overly-lit areas in images while true WDR deploys light-sensitive sensors (CCD/CMOS) and DSP technology to balance lighting.

\nBacklight compensation (BLC) works by increasing the level of exposure for the entire image via digital signal processors (DSP), which divides an image or scene into different sections and adjust the lighting accordingly.

We took our patent pending SmartControl CAT5 technology and created the first line of true plug-and-play CAT5 analog indoor recessed mount dome cameras in the industry. The Sony 960H "C" sensor is perfect for crystal clear high resolution images down to 0.01 lux and over 730 TVL. Designed, engineered, assembled and tested in the USA.

We took our patent pending SmartControl CAT5 technology and created the first line of true plug-and-play CAT5 analog indoor recessed mount dome cameras in the industry.The Sony 960H "H" Color@Night sensor delivers 960H full color at night in almost total darkness, down to 0.00002 lux with over 730 TVL. Video, power and OSD control all run over a single standard CAT5 cable up to 1,000 ft. - and works with any DVR.

We took our patent pending SmartControl CAT5 technology and created the first line of true plug-and-play CAT5 analog outdoor vandal dome cameras in the industry. The "H" Color@Night sensor delivers 960H full color at night in almost total darkness, down to 0.00002 lux with over 730 TVL. Video, power and OSD control all run over a single standard CAT5 cable up to 1,000 ft. - and works with any DVR or Hybrid DVR with analog BNC video inputs. Designed, engineered, assembled and tested in the USA.

We took our patent pending SmartControl CAT5 technology and created the first line of true plug-and-play CAT5 analog indoor flush mount dome cameras in the industry. Our EXCA235CAT5H Color@Night "H" sensor delivers 960H resolution full color at night in almost total darkness, down to 0.00002 lux with over 730 TVL. Designed, engineered, assembled and tested in the USA.

The use of phase sequence image (PSI) sets to reveal the total volume occupied by a mobile target is presented. Isocontrast composite clinical target volumes (CCTVs) may be constructed from PSI sets in order to reveal the total volume occupied by a mobile target during the course of its travel. The ability of the CCTV technique to properly account for target motion is demonstrated by comparison to contours of the true total volume occupied (TVO) for a number of experimental phantom geometries. Finally, using real patient data, the clinical utility of the CCTV technique to properly account for internal tumor motion while minimizing the volume of healthy lung tissue irradiated is assessed by comparison to the standard approach of applying safety margins. Results of the phantom study reveal that CCTV cross sections constructed at the 20% isocontrast level yield good agreement with the total cross sections (TXO) of mobile targets. These CCTVs conform well to the TVOs of the moving targets examined whereby the addition of small uniform margins ensures complete circumscription of the TVO with the inclusion of minimal amounts of surrounding external volumes. The CCTV technique is seen to be clearly superior to the common practice of the addition of safety margins to individual CTV contours in order to account for internal target motion. Margins required with the CCTV technique are eight to ten times smaller than those required with individual CTVs.

Crowdsourcing has been widely leveraged for the tagging of video material; recently this has included the monitoring of surveillance video footage. However, the relative advantages and disadvantages of crowdsourcing watchers of surveillance video are not well articulated, nor has there been any significant work on the efficacy of different tools for retrospective surveillance. In this paper we explore factors that might affect crowd performance on video surveillance monitoring tasks. We firstly established a baseline for crowd performance in a 'live' surveillance study before comparing two different interfaces that allowed retrospective discovery of the same events (Scrub Player and Panopticon). Using MTurk, we asked 474 people to monitor two types of CCTV footage containing different levels of extraneous activity for 'events' using these two interfaces. We also manipulated bonus payments. We found that the crowd was most accurate when watching the video that contained the least extraneous activity, that there was no effect of financial incentive on the reporting of true events, but that there was some indication that higher bonus payments generated more false alarms. We also found an effect of interface: those using the Panopticon interface processed more video footage and generated more alerts, but were less accurate overall. We discuss the implications of different interface designs, video types, and incentive schemes when crowdsourcing watchers of surveillance video. 006ab0faaa

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