Video Surveillance Systems

CCTV systems are important tools for managing security. Besides being used for security, CCTV systems can be used for personnel monitoring, process control, to reduce losses / incidents of insecurity, improving the effectiveness of workers, reduce monitoring costs, improving service quality, among other applications.

 

There are three main areas within the overall structure of CCTV system: the area camera, the control area and the transmission of video signals / data.

 

Thermal Cameras:

Thermal imaging cameras are used to complement conventional camera systems and for creating images of the thermal energy that is invisible to the naked eye. Due to the fact that all generates heat, thermal imaging cameras are able to capture images in great detail both day and night without the need for extra lighting (such as lasers). Thermal cameras have great performance even in places with smoke, dust, fog or foliage as mild heat energy can pass through without any problem. 


Conventional camera vs Thermal camera
 

Thermal cameras provide excellent results during the day because they do not rely on color contrast to provide information as with conventional CCD cameras.

The uses and applications of thermal imaging cameras are very different. They are used for port security in large areas where lighting is poor, in areas where the perimeter is restricted in applications requiring more detail than can be seen with the naked eye or where the infrastructure is critical, among other applications.

 

CCD and EMCCD cameras

CCD cameras (charge coupled device) use a chip to enhance the sensibility to capture light and therefore the capacity to form an image.  However, the performance of these cameras is affected by noise. Thus EMCCD cameras (for its acronym in English Electronic Multiplying CCD) is a technology for signal multiplication CCD detectors that effectively eliminates noise signal readout allowing for best results. Among the advantages that are high sensitivity, high spatial resolution low light and the fact that the reduction in sensitivity to bright lights provides better image quality and lower cost.

 
CCD vs. EMCCD