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Objective. Currently, the task of increasing the spectral solvability of a video stream using modern frame filtering methods is urgent. Various methods of frame filtering are considered and analyzed in the work, and their detailed comparative analysis is carried out. The obtained data contribute to the further development of various materials to increase the spectral resolution of the video stream. Method. A large number of different approaches have been developed in the scientific literature to increase the spectral resolution of a video stream using modern frame filtering methods, and the most basic ones are analyzed in this paper: linear spatial filtering; nonlinear spatial filtering; spatial frequency filtering; filtering using Fourier analysis; filtering based on wavelet analysis. Result. A preliminary systematization of the characteristics of the methods under consideration has been carried out in order to develop new algorithms and implement them to improve image quality, increase detail and clarity of the video stream; various frame filtering methods have been analyzed, contributing to an increase in the spectral resolution of the video stream, and their impact on the quality of video content has been considered; during the analysis, it was found that in order to increase the spectral solvability of the video stream, it is necessary to use a combined filter. The above facts will allow us to further develop methodological recommendations for increasing the spectral solvability of the video stream. Conclusion. The considered approaches to increasing the spectral resolution of a video stream using modern frame filtering methods are preferable when increasing the spectral resolution of images, since they use all the positive aspects of linear, nonlinear and spatial frequency filtering.

Over the last years pipeline transport was developed due to widespread use of non-metallic pipes. In comparison with metallic pipes operating cost of non-metallic is low (there is no need for corrosion protection, special chemical treatment etc.). Since the 1980s, the extent of non-metallic pipelines across Russia exceeds 35 million km. During development of pipeline transport it is needed to solve the problem of residual work capacity determination. Existing technical diagnostics related to the assessment of efficiency of metal pipelines. The same method of estimation of non-metallic pipes state is not implemented because of significantly difference between physical and mechanical properties. Use of existing methods (in terms of metal pipes) is not possible. In this paper the approach to evaluation of technical condition of the pipeline, made of a polymer material is analyzed. The approach is based on the gradient change of wave front parameters, amplitude and frequency characteristics of spectral signal registered on tube cover. The behavior of pipelines during operation are poorly understood, so it is difficult to predict their residual work capacity under dynamic stress, i.e. under operating conditions. This leads to a large number of failures (pipeline ruptures), which has extremely negative impact on the environment. Today prevention and liquidation of environmental pollution is an urgent task, therefore, development the wave method for evaluation of polymer pipelines technical state during its operation is an important objective to reduce the risk of environmental pollution and to improve monitoring and forecasting its state.