Method for evaluating sound source positioning result of sound imaging instrument based on image processing

Abstract

The invention relates to a method for evaluating a sound source positioning result of a sound imaging instrument based on image processing. According to the method, an azimuth angle error and a pitchangle error of the sound source positioning result in a sound imaging cloud picture shot by the sound imaging instrument are used as evaluation indexes of a sound source positioning error of the soundimaging instrument. Then, an image processing technology is used for extracting a target sound source of the sound imaging cloud picture, and center coordinates of the target sound source are calculated. Position coordinate information of the target sound source in an actual physical space is obtained through image calibration. Finally, the sound source center coordinates of the target sound source in the sound imaging cloud picture are compared with the position coordinates of the target sound source in the actual physical space, and the azimuth angle error and the pitch angle error are obtained through calculation. From the image processing technology, the problem that the sound source positioning result of the sound imaging instrument is relatively difficult to evaluate in a long-distance state is solved; the evaluation method can accurately evaluate the sound source positioning result of the sound imaging instrument, so that the performance analysis of the sound imaging instrumentis facilitated; and the image processing technology is simple to operate.

Description

technical field [0001] The invention relates to the field of acoustic measurement, in particular to an image processing-based method for evaluating sound source localization results of an acoustic phase instrument. Background technique [0002] In recent years, sound source localization technology has played a pivotal role in the fields of video conferencing, navigation, radar, intelligent robots, sonar, and battlefield monitoring due to its strong anti-interference ability, good concealment, and high positioning accuracy. When the mechanical equipment fails, the failed parts will emit abnormal noise, and the sound source location technology can be used to locate the fault area. Quickly locating the location of the sound source is of great significance in providing test decision support and discovering test risks in a timely manner. [0003] As a means of sound source localization, sound source visualization makes the identification of sound source fast and accurate. Howev...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned problems, the present invention provides a method for evaluating the sound source localization results of the pan-wave instrument based on image processing, which is used to objectively evaluate the sound source localization error results of the pan-panel instrument. Starting from the image processing technology, it overcomes the It is difficult to evaluate the sound source localization results of the sound phase instrument at a long distance

Images