When designing a surveillance system that is to be used in the outdoors, changing lighting conditions are one of the biggest challenges to overcome. So over the past several years, low-light surveillance technology has been growing in importance as a means to improve outdoor surveillance designs, and megapixel imagers have been modified to improve identification.
Recently, these two technologies were competing with each other. While megapixel images are great for identification, they generally have been very poor in low lighting, while improved low lighting systems were 4CIF at best. Many times, these systems were less than that with terminal-type cameras. However, there are signs that we are finally seeing low-light detection and identification working together.