modeling and simulation of traffic lights on the high contrast and brightness conditions and structure technology

nowadays, the use of intelligent control systems to reduce human error is one of the most popularresearch fields. design and implementation of such controllers requires to actual knowledge of theenvironment conditions. traffic lights as one of the inputs of intelligent control systems are significant.usually the traffic lights have the various physical structure. also, generally in image processingimages is provided by a digital camera therefore having similar characteristics of images is anecessity. the light of environment conditions as backlight can lead to different results in the imageprocessing. it seems, design and practical implementation of this system with acceptable performancewill be hard achievable without a proper model for different lighting conditions. in this study wepropose a consistent and comprehensive model for traffic lights in various lighting conditions, such asday and night conditions.