The paper proposes an approach for visualizing objects on images obtained with active-pulse television measuring systems (AP TMS) by range. The calculation of the AP TMS active vision area shape allows getting data of the light energy distribution inside the active vision area. To distinguish the object of interest on the video frame, an inter-frame difference of several frames obtained with different gating delays can be found. The equation of inter-frame difference for three frames is proposed. The difference simulation for three active vision areas was performed. To test the method of images space-time filtration by range, we used images obtained as a result of experimental studies conducted using large aerosol chamber of the V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science (IAO SB RAS). In order to conduct the experiment video frames obtained under conditions of normal transparency of the propagation medium at different gating delays of the image intensifier tube (IIT) were taken. During the experiment, an image of the measuring table located at a distance of 15 m was distinguished, and the remaining objects located in the system’s field of view were successfully removed using space-time filtration. Removing of the “unwanted” information from images will increase the compression ratio and speed up the algorithms for further processing.The results obtained in this paper contribute to a more efficient use of the AP TMS for the purpose of detection and recognition of the objects under various conditions of visibility.
An algorithm for calculating the shape of the active vision area of active-pulse television measuring system is proposed and implemented in the MATLAB software. Methods for determining the range of such systems, implemented in this software environment, are described. The software environment corresponds to the operation of an active-pulse system with settings for illumination pulses duration from 1 ns to 250 ns and settings for strobe pulses duration from 1 ns to 500 ns, and the maximum observation depth of the vision area is 80 m.
The paper presents experimental results for obtaining the shapes of active-pulse television measuring systems vision zones, their statistical analysis, as well as comparison with the shapes of zones obtained as a result of modelling. A description of the active-pulse television measuring systems operation principle, and the main technical characteristics of the active-pulse television measuring systems prototype used in the experiment are given. It has been experimentally confirmed that the proposed mathematical models for the system’s active vision zones description adequately and effectively describes the process of their formation, and can be used in the active-pulse television measuring systems design and development processes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.