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One of the most confusing and difficult topics in the CCTV world is resolution. Most of us have digital cameras or video camcorders and have heard the term megapixel used as the most common comparison in resolution between various makes and models. We are also aware that a larger number means better picture quality Camiseta Kiko Casilla , but many people do not know why. In the CCTV security camera world, though, most cameras are still analog and their resolution is measured differently from what we are used to. This is slowly changing, but there is still a need for these terms and technologies to be understood by anyone involved in the industry.

Analog Resolution

When measuring analog resolution Camiseta Marcelo , a TV line does not have a defined number of individual pixels. Instead, the phrase "TV lines" refers to the number of discernible horizontal or vertical lines on the screen. Analog security cameras are measured in Analog TV Lines, and most of them have between 420 and 580, with a few brands claiming to produce cameras with 630+ TVL. The higher number of TV Lines Camiseta Gareth Bale , the more information captured, and thus the higher resolution and detail in the picture. These types of cameras connect to a security DVR or CCTV VCR, via coaxial video cable, that allows the signal to be recorded and played back later or transferred over the internet..

Digital Resolution

A pixel is the smallest element of a digital image. We have all zoomed too far into a picture from a website and seen the image go from clear to a bunch of colored squares - each one of those squares is an individual pixel. Graphics or images like this can have different resolutions Camiseta Karim Benzema , just like monitors and cameras, and the artists often create work at much higher resolutions than monitors can handle, just so they can be zoomed in or out on without distortion. The most common computer monitor resolutions are 1024x768 and 1280x1024 pixels. Digital point and click cameras like the ones you take pictures of your kids with are usually between 5 and 8 megapixels. Common digital security cameras usually boast a megapixel resolution of between 2 and 3. A megapixel (MP) is 1 million pixels, and is a specific measurement for digital resolution that encompasses the area of the output video (height x width).

Example: If a camera outputs a signal that is 1280x1024 pixels (a standard PC monitor's resolution) Camiseta Toni Kroos , it is shooting at a megapixel resolution of 1280 x 1024 = 1,310,720 pixels = 1.3 Megapixels (MP).

The most common type of digital security cameras are IP Cameras. These, like your digital camera at home Camiseta Cristiano Ronaldo , use strictly digital resolution. They utilize a network connection to either act as a standalone device or connect to a network-based DVR (Digital Video Recorder) or NVR (Network Video Recorder). IP Cameras have fixed resolutions and are now approaching, and in several cases exceeding, 1 megapixel in resolution, on average. Many of these cameras also support POE (Power Over Ethernet) Camiseta Nacho Fernandez , which allows them to be powered by the Ethernet cable used for network connectivity, and PTZ (Pan Tilt Zoom), allowing for remote control of the pan, tilt and zoom features Camiseta Raphael Varane , if applicable.

More and more industry installers and professionals are moving to network-based CCTV equipment because of the flexibility and expandability that it allows. Massive remotely-viewable security camera infrastructures are replacing old, out dated analog systems at an increasing rate and will soon become the preferred industry solution.How Data science is shaping the world:
Posted by Sneharaghunath on June 19th, 2018


The football season has kick-started and we have lot of analysts working behind the screen. These guys are the reason for data to be presented accurately. The number of miles ran by a particular player, the entire team and the speed per square feet and lot of more metrics are crunched every single min. How exciting this role could be` You evaluate the attributes of each player Camiseta Sergio Ramos , the team and the entire pool of teams. At the training end, an individual player’s attribute data will gives clear insights on how the player is how we can improve further. Team managers decide on the position of the players based on their individual attributes. For example, Ronaldo’s strength is agility and speed. The manager will evaluate the speed of his legs with the ball and without the ball. This help him analyse whether we can be a wing-man or a center forward. So here is the big clue – not on who is going to win the world cup but on how these data is collected and how you can land yourself in one of the most attractive jobs.


These guys are typical data scientists supported by data analysts and some of the data processing and representation tools. So how does one become a data scientist and what are the job role available for data scientists. First and foremost thing of a data scientist is his knowledge in data science and data analysis tools. He or she would have completed their masters in big data analytics courses and would have done months of on the job project training. These people will also a good sense of anyone of the advanced programming language like python. This will help them get a hold onto the data processing at the backend of the tool.


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