Denighting: Enhancement of Nighttime Images for a Surveillance Camera

Simple Fusion Based Night Video Enhancement

“…Fig-5 and Fig-6 shows the enhanced result through traditionalcontrast enhancement using tone mapping and global histogram equalization. Some of the related papers denighting [3] and day colour transfer based approach [5] are also implemented and is shown in the Fig-7 and Fig-8. The result of proposed method are also compared with these method and is tabulated in Table-1 It shows the proposed system perform well as compared with the denighting and colour transfer based approach.…”

“…There are different methods for night video enhancement [3][4][5][6][7][8] to produced improved results. Denighting [3] used retinex theory that produces illumination and reflectance component, illumination component is enhanced through the day time image.…”

“…Denighting [3] used retinex theory that produces illumination and reflectance component, illumination component is enhanced through the day time image. Finally the image is reconstructed by reflectance component and colour component.…”

“…Finally the image is reconstructed by reflectance component and colour component. But in [3] it may results in unusual artifacts, improper lighting like static illumination is not maintained like traffic light, for example if the background of traffic light is sky, then fusing with day image with white sky results in no traffic lights. Objects that are having problems, due to foreground is mixed with the background.…”

Image-based fusion for video enhancement of night-time surveillance

“…Since day-time videos are also available in many surveillance applications, there are many attempts to take this advantage to combine the day-time and the night-time scenes to enhance the night-time videos. [5][6][7] However, since there are different moving objects in the day-time video and night-time video, and also the condition in the background may be different, it is not easy to produce good results with fusion.…”