What are High Definition Security Cameras?
In short, high definition video has larger video image size, and more pixels when compared to standard surveillance cameras to make sure you obtain very clear and detailed video . HD video cameras are obtainable from many suppliers as well as in just about every camera style and design, ( bullet, dome , box, PTZ , ect ) as a result it’s simple to add high definition to your video surveillance system .
How does High Definition Work?
Resolution found in HD security cameras are often referenced as either 720p or even 1080p. 1080p, also known as full HD resolution, can record video at 1920 x 1080 pixels in size. 720p HD video comes in at 1280 x 720 pixels. In reference to the letter “p” in both 1080p and 720p, it represents what is called “progressive scan,” which assists to reduce blur brought on by movement.
Older CCTV analog cameras use horizontal lines to determine video resolution, which is termed TVL. Typically, the higher TV Lines a camera has, the higher the video resolution is. HD security cameras are digital and use a much different technology that is gauged in pixel resolution. HD cameras can easily fit more pixels into an image as compared to what CCTV analog cameras are able to accommodate in horizontal lines , providing you with a higher quality image. HD cameras simply use more pixels when compared to non-HD cameras, ultimately providing the best video image quality.
HD surveillance cameras record video using widescreen aspect ratio of 16:9. This makes the video image wider and larger than non-HD cameras. A wider image has the potential to monitor more space with less cameras which could save you time and money. Non-HD cameras will typically offer an aspect ratio of 4:3.
With a wider aspect ratio and more pixels, HD cameras provide high detailed video images that are not available with standard analog CCTV cameras.
How Can High Definition Surveillance Help You?
Since HD cameras can record bigger video images and offer crystal clear resolution, there is a good chance you will need far fewer cameras to cover an area than if you try and use regular analog resolution cameras. An HD camera system should be considered if :
- Personal details and facial recognition are considered important: HD cameras installed properly to monitor and capture clothing and faces, like behind checkout registers and in entrances will make it easier to identify individuals.
- LPR or LPC – You have a need for monitoring and recording license plates either for recognition or for capturing. HD cameras can help you properly identify and record license plate numbers. With a larger video image format, HD security cameras can monitor high traffic areas or parking lots and provide important documented information of possible incidents or crashes
- You need high detailed video footage for evidence: Areas with violence and high crime rates monitored with HD CCTV cameras can provide crystal clear detailed video of any possible conflicts, and the HD resolution will make more likely that, cars, actions and people in the video will be easily identifiable