CCTV Security Cameras & Video Surveillance
Though most of our attention these days is focused on the transition to IP video technology, it’s important to note that analog CCTV security cameras can still be highly effective for many surveillance applications, especially those on a budget. Using IP video encoders and other equipment such as digital video recorders and hybrid DVRs makes it possible to leverage your existing analog cameras while migrating into the world of digital surveillance. In its truest form, a CCTV camera is an analog video camera that transmits signals via coaxial cable to a single central location for monitoring, recording, and video analysis. While the recent trend is a push towards IP network cameras, CCTV cameras are still widely used, and offer a cost-effective answer to many common surveillance scenarios. The two main categories of CCTV cameras are fixed cameras and pan/tilt/zoom models which can rotate horizontally and vertically to cover more area.
Pros of analog CCTV Lower initial cost – In most cases, analog cameras cost less up front than IP network cameras. Wide-spread compatibility – Mixing and matching camera models and surveillance equipment form different manufacturers is easy with an analog CCTV security camera. Cons of analog CCTV Expensive cabling – For large-scale surveillance applications, analog cameras require complicated cabling schemes that can be quite expensive and also challenging to install. Security cameras are the starting point for most CCTV video surveillance systems. With an analog system, coaxial cable is required for transmitting video footage from the CCTV security cameras.
Generally, most standard CCTV cameras offer a TVL resolution of around 380, while high-resolution cameras will deliver something closer to 540 TVL. Effects of Digital Conversion on Image Quality. Still, a DVR-based solution is a very good option for users looking to reap some of the benefits of digital IP surveillance while using lower-cost CCTV security cameras.
Low Vision? CCTV Magnifiers: Eye Disease and Low Vision Devices
Known as a CCTV or as a Video Magnifier, CCTV magnifiers provide low vision aid for a full range of visual needs, specializing in assisting individuals with macular degeneration, glaucoma, cataracts, retinitis pigmentosa, diabetic retinopathy, and other low vision causing eye diseases and conditions. The benefits of a CCTV magnifier are many, as the versatility provided allows for independence through visual magnification and technology. Depending on the video magnifier, duties such as reading the mail, books, writing, enjoying a crossword puzzle, connectivity to a computer and much more can be accomplished with the aid of this one low vision assistive tool. The CCTV magnifiers are generally a combination of a customized camera, mount arm for steady hands-free positioning of the camera, a viewing screen/monitor, lenses with the ability to zoom, and viewing modes with lighting, color, and contrast modes for optimal visual assistance. There is often a viewing platform, which allows easy positioning of the item, book, or image to be magnified.
By portraying the optic information received by the camera on the screen/monitor, CCTV magnifiers allow you to control the focus, magnification, and often screen preference settings. The information is simply gathered in video real time, and displayed in the monitor. The real time video magnification make the CCTV magnifiers a great solution for writing and performing hands-on activities, like crossword puzzles, writing checks, and intricate detail hobbies like needlepoint and model building/painting. With many CCTV magnifiers available today, understanding the options available can help determine which video magnifier is the right fit for your particular eye and vision condition. Seek the advice and experiences of others who know the products available.
By seeking the advice and experiences of peers and vision specialists, you will be well prepared for choosing the right CCTV magnifier for your lifestyle.
Easy CAD software for CCTV
CAD and CAE software is used widely in all areas of engineering. IP Video System Design Tool is an easy, intuitive and versatile CAD program for CCTV and IP Video surveillance system design. Our CAD program offers 2D and 3D modeling of video surveillance systems and helps the designer to find optimal places for security cameras on the site plan, check coverage of all cameras, choose proper camera lens, and get estimations of required hard drive storage space and network bandwidth for IP cameras. The user can draw or import a site/floor plan in BMP/JPEG format and then place test 3D objects like cars or men and obstacles like walls and buildings to visualize what the security system operator will see on his/her CCTV monitors. IP Video System Design Tool is widely used as video surveillance CAD software by security system designers, installers, network administrators and DIYers from more than 70 countries.
Switch between two-dimensional site plan or floor plan and three-dimensional views. Change any parameter of a security camera: When one parameter changes, related parameters are automatically recalculated. Rotate cameras, change camera height to view them from different perspectives. Export two-dimensional camera layout, 3D mockups and tables to other software to prepare video surveillance project documentation. We developed our software to be as easy to use as other popular software packages used by security systems engineers like MS Visio or AutoCAD.
No special PC hardware is required for JVSG computer aided design software. In case if you plan to import large site plan/floor plan images or work with large CCTV layouts it is recommended to use a modern graphics card from ATI or NVidia with more than 256 MB or RAM. Please feel free to download a 45 days trial version and check out the user comments at this link. In addition there is a special offer for bloggers to receive a license key for this CCTV software for free.