Determining method for sound field rebuilding plane in acoustics video camera system

A sound field reconstruction and camera technology, applied in radio wave measurement systems, positioning, measuring devices, etc., can solve problems such as the limitation of dynamic sound source and sound source positioning accuracy
CN101359043AInactive Publication Date: 2009-02-04TSINGHUA UNIV
0 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2009-02-04
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an acoustic field reconstruction plane confirming method in an acoustic camera system, belonging to the noise analysis and control technical field. First of all, sign points are pasted on the moving object to be tested; the synchronous images in two cameras in the system go through sign point identification through a template matching method, and the identified result is matched to find the corresponding image-point pairs; the matched image-point pairs are space-oriented through a binocular stereo vision method to obtain the coordinates of the sign points corresponding to the selected coordinate system; then a spatial plane of the sign points is calculated, and the plane serves as the reconstruction plane of the acoustic field. The method provides acoustic field reconstruction plane parameters for the acoustic camera system, and establishes the basis for the integration of the acoustic field images and the video images.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for determining a sound field reconstruction plane in an acoustic camera system, and belongs to the technical field of noise analysis and control. Background technique

[0002] The noise of complex moving machinery such as automobiles and trains has a great impact on the environment. Due to the movement, for this type of (multi-sound source) motion noise, it is more difficult to obtain its sound field more accurately, distinguish each sound source, and accurately locate it. The visualization of the sound field can make the positioning and analysis of the noise source more practical, thereby providing a basis for further noise control work, and is of great significance to noise measurement and control work.

[0003] In order to improve the efficiency of sound source localization and sound field visualization, and perform sound source analysis more intuitively, in the field of noise analysis in recent years, a method of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More