Cyberwatch Security Communication Systems, Inc.

CCTV Imaging Systems

 

Analog Camera: The analog camera system is diminishing, but still remains a very active component of today Closed Circuit TV system designs. The improvements in resolution of these systems allow some cameras to provide up to 540 TVL resolutions at a very competitive pricing. These factors allow analog cameras to remain a compelling choice for smaller and cost constrained installations. The disadvantage with these systems is that some of the resolution is compromised in the process of conversion to digital format, recording, and playback of the video at the later stages. In addition, the combination of analog camera and Digital Video Recording limits the capacity of the archived video to be processed further for additional information acquisition and is generally restricted in the number of input ports of the DVR system

IP Camera Systems: Internet Protocol (IP) based Networking cameras are becoming the most pervasive technology platform for digital CCTV applications. The introduction of Mega-Pixel cameras has added the clear differentiation and comparative advantage of this platform compared to analog cameras. The Mega-Pixel camera systems can include multiple Integrated Optical Packaging (IOP) and image acquisition points which can acquire large amount of information from a particular field of view and reduce the need for additional systems to achieve full coverage of the field of view. The reduction in number of camera locations can assist in the reduction of the installation and operation costs of the CCTV systems and in the long run and can help in the reduction of the maintenance costs of the system as well. These advantages could offset the additional cost occurred for the purchase of Mega-Pixel cameras, and providing a positive return on investment for the end user.
    In the application of the mega pixel cameras system the designer need to be aware of not only the width and length of field of view, but the video compression ratios as well. These factors are important because the amount of information acquired in the low compression format can determine the resolution of the images acquired. Currently most field tested Mega Pixel cameras use Motion JPEG compression formats which would compromise the fidelity of the video signal to some extent.

Another important factor to keep in mind is even with high compression ratios,  these cameras are still bandwidth hogs and consume substantial amount of network capacity. The newest camera systems are going to the H.264 compression format which provides more efficient compression algorithms which requires lower network bandwidth and preserve the integrity of image as well. Additionally, the new wire line and wireless technologies are critical for the proper deployment of Mega-Pixel cameras. The Gigabit switches and new WiFi wireless technologies based on 802.11n which can provide up to 130Mbps data rate throughputs makes the deployment of large scale Mega-Pixel and High Definition cameras practical if the network engineering and network topologies are correctly designed and installed.

Video Servers and Encoders: Video Encoders and Servers are devices that can take one or multiple inputs of Composite Video (CV) signals and covert the signals to streaming IP video that can be put on the network and remotely access or recorded with a Network Video Recorder (NVR) system. Some more advanced systems also include storage capabilities on board and can store some video files before transmitting them to the recording servers. The Server/Encoder systems are good tools for integrating the legacy systems in to the digital platform and provide digital capabilities for some specialized cameras which are still using CV output but need to be integrated to the IP based network.

Specialized Camera Systems with night vision capabilities: These cameras provide specific application in field of transportation for license plate capture and low light recoding. In these systems, the combination of infrared lights and digital signal processing enable the recognition of images where the regular imaging systems are not capable of recognizing these images and filtering them out for presentation.

Please contact Cyberwatch regarding your design and applications, and the best solutions provided in the Digital CCTV industry.

 

About Us| Privacy Policy | Contact Us | 2015 © Cyberwatch Security Communication Systems, Inc.