Method of Improvement of Signal-to-noise Ratio of Registered Shots using Dark and Light Spatial Noise Portraits of Camera's Photosensor

Improvement of the signal-to-noise ratio of registered frames is necessary in scientific, technical and amateur tasks. Dark and light spatial noise portraits of camera's photosensor can be used for frames quality increase. Earlier method of improvement of the signal-to-noise ratio of shots by use of light spatial noise portraits of camera's photosensor was proposed. In this paper method of improvement of the signal-to-noise ratio of shots by use of both light and dark spatial noise portraits was analyzed. According to the results of numerical experiments, it was found that the signal-to-noise ratio can be increased up to 50÷60 times compared to that one of a single image.