The Effect of Camera Exposure on the Results of Spatial-Frequency Processing and the Quality of the Obtained Amplitude Images

Abstract

The paper presents the results of experiments which purpose was disclosure the influence of image recording parameters, such as exposure time, on the quality of the resulting amplitude image. An amplitude image is a condensed data representation which is the result of spatial-frequency processing. It is an author’s method that uses spectral analysis and focuses on the study of changes in pixel intensity levels in time. The amplitude image, proposed by the authors, is something new in relation to known solutions using pulsating visual markers. The main motivation to start work in this area was the need to design a localization system that will generate position information from several independent sources. The method can be used in the issue of localization and navigation. The ability to search visual markers located at a great distance from the receiver is its special feature. The authors present the results of research into the impact of the recording camera exposure time on the quality of the resulting images in order to select the best value. The beginning of the manuscript presents a description how the exposure time of the camera can potentially affect the quality of the obtained images. The description of the problem was supported by a literature analysis of papers related to the issue of localization based on the visual markers and the camera. The next section presents the description of spatial-frequency processing and the main purposes of generating amplitude images. The research part describes the assumptions, equipment and research procedure. Then, the results of the research into the influence of the camera exposure time on the quality of the resulting amplitude images are presented.