Bieliaiev O. Signals and images processing methods improvement in multimedia shooting simulators

Object - the process of processing signals and images in a multimedia shooting simulator(MSS). Aim - development and research of signal and image processing methods in the MSS, which will allow objects detection and measuring their geometric and kinematic characteristics on the projection screen of the MSS using heterogeneous dynamic scenes with the necessary qualitative indicators. Subject - models, methods and algorithms for detecting and determining the coordinates of bullet holes and marks from the laser emitter on the dynamic background of the MSS target projection screen. Methods - the theory of statistical decisions for the synthesis of optimal signal processing algorithms in the MSS, the method of contour analysis of images, methods of experimental research and computer simulation to determine algorithms qualitative characteristics. Results - mathematical models of optical signals and noise on the image in MSS have been improved, which, unlike the known ones, take into account the shape and size of the laser spots and bullet hole in the background of photonic fractional noise, reading noise and quantization noise for two modes of operation of the MSS: with a laser simulator and with the use of military weapons, which made it possible to formulate the requirements for the accuracy of bullet hole measurements and the characteristics of the correct detection of signals; for the first time, an optimal method for detecting and measuring the coordinates of a useful signal in the projection screen image for the two modes of operation of the MSS based on the processing of binary quantized signals and, unlike the known methods, can improve the accuracy of the assessment of the spatial position of the center of the useful signal due to the shift of weight functions describing the shape of the signal relative to the adopted image implementation; For the first time the method of preliminary filtering of images in the MSS on the basis of contour analysis is proposed, which differs from the known methods in that it allows to perform image processing in conditions of a priori uncertainty (with a dynamically changing background); For the first time, the method of image processing in MSS was proposed using observation of the aiming process, which differs by the presence of three successive stages: extrapolation of the position of the laser spot, strobing of the measuring zone and image processing in the strobing zone, which allows to increase the speed of data processing during the dynamic mode of operation of the MST. Implementation - in scientific research activities at NURE (Kharkiv). Application - development of multimedia and multimedia shooting simulators.