Technology of Sliding Coding of Uneven Diagonal Sequences in Two-Dimensional Spectral Space of Transformants
DOI:
https://doi.org/10.20535/RADAP.2023.94.13-23Keywords:
dynamic sequence of video frames, completeness and integrity of video information, time delay of information delivery, bit size reduction, transformant coding, diagonals, truncated positional numbersAbstract
The requirements for the qualitative characteristics of the remote form of video interaction are substantiated. These include the following: completeness and integrity of video information; timeliness of video information delivery, which is determined by the time of delay in information delivery. This includes the time spent on processing and transmission via information and communication networks. Based on a comprehensive analysis, it is shown that there is a contradiction in the process of meeting these requirements. On the one hand, it is driven by the need to increase the capacity of information and communication networks. This is driven by the rapid growth of the information intensity of the video stream and the complexity of its processing and analysis. On the other hand, the remote form of information interaction is characterized by the use of wireless information and communication technologies based on mobile aerospace and ground-based platforms. These technologies have insufficient capabilities in terms of speed characteristics of information transmission. Hence, improving the quality of video information services using the mobile segment of an information and communication network in crisis conditions is an urgent scientific and applied problem. It is shown that the localization of the imbalance between the growth rate of information load on infocommunication networks and their bandwidth is achieved by using standardized technologies for encoding and formatting video data. At the same time, standardized technologies have vulnerabilities. This concerns the dependence of the level of bit rate reduction on the amount of psycho-visual redundancy that is reduced during the coding process. It is thoroughly proved that the elimination of this vulnerability is achieved by improving standardized platforms. For this reason, it is proposed to develop coding methods that reduce the bit volume of video frames without losing their integrity. Therefore, the purpose of the research is to develop a method for reducing the bit intensity of the dynamic video stream based on the coding of their segments in two-dimensional spectral space. Accordingly, the article substantiates the concept of interpreting a transform based on establishing the presence of a combinatorial configuration, which is determined by its structural, topological and psychovisual features. The potential advantages of taking into account the combinatorial configuration of a transform based on its reformatting according to the uneven diagonal structure are shown. The development of a technology for sliding truncated positional coding of uneven diagonal sequences in the two-dimensional spectral space of a transform is presented. The application of the created technology in the process of encoding transformed video segments for a sequence of video frames allows to reduce their bit volume by an average of 15-30%. This takes into account the dependence on the class of video frame in the local group and the level of structural and semantic information content of video segments.
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