E.A. Samoilin

In article questions of construction optimum inhabitants pulse hindrances with uniform brightness distribution to digital images are considered. The purpose of offered work is synthesis statistically optimum detections pulse hindrances for improvement of quality of a spatially-selective filtration of images. Procedure of synthesis of optimum algorithms of functioning detections is offered. Considered procedure is based on alarm distinction of the centre of a sliding window with distribution of its other elements and consists in formation of criterion of the optimality representing in the first case unconditional probability of the admission of hindrances at set unconditional probability of false operation, and in the second - unconditional probability of a false alarm at the fixed unconditional probability of the admission, and the subsequent definition of thresholds of the alarm distinction minimizing specified criterion. For the given two cases dependences of optimum threshold parameters on probability of presence of pulse hindrances on the image are resulted. Results of numerical researches synthesized and known not optimum detections in a probability range occurrences pulse hindrances from 0 to 1, showing advantage of the first are presented. Synthesized detections hindrances are realized the program and can be used at the first stage of a spatially-selective filtration of digital images which procedure of their restoration follows. The further researches can be directed on synthesis optimum detections with use of uncertain multipliers of Lagranzha, and also optimization of threshold parameters by criterion of a minimum of average risk.