Sound source localization camera shooting tracking device

A sound source localization and tracking device technology, applied in positioning, measuring devices, image communication, etc., can solve problems such as insufficient practicability, limited monitoring range, and unstable estimation results, so as to achieve humanized camera functions and save monitoring costs , Improve the effect of monitoring ability

Inactive Publication Date: 2013-08-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF4 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problems that the existing sound source-location method cannot effectively realize the three-dimensional space positioning of multiple aliasing sound sources, and there are problems such as inflexible use of positioning methods, unstable estimation results, low precision, and insufficient practicability, etc., but it is ap

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sound source localization camera shooting tracking device
  • Sound source localization camera shooting tracking device
  • Sound source localization camera shooting tracking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] This system uses a pickup (microphone) array to pick up voice signals, and judges the sound direction according to the sound frequency domain and time domain, and locates the sound source. After that, the camera automatically turns to the direction of the sound to monitor the position of the sound source, and then the accuracy of the sound source position is improved through the living body recognition technology of the camera. It realizes the all-round monitoring of a single device, improves the monitoring ability and saves the cost.

[0044] In the present invention, the model used for the camera cloud platform is Putianshi PTS-303; wherein, the horizontal angle motor M1 that drives the camera to rotate up and down on the single-chip microcomputer PB1 and PB2 ends controls the cloud platform; Elevation motor M2.

[0045] microphone placement figure 2 As shown, the second pickup MIC2 is at the origin, the distance between it and other pickups is a, and the distance ...

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

PUM

No PUM Login to view more

Abstract

A sound source localization camera shooting tracking device comprises a cradle head for carrying a camera, a single chip microcomputer and four sound pick-ups, the first sound pick-up, the second sound pick-up and the third sound pick-up are in sequential arrangement along a horizontal straight line, the fourth sound pick-up is positioned right above the second sound pick-up, output ends of the four sound pick-ups are connected with four input ports of the single chip microcomputer respectively via four filters, and a horizontal angle motor and an elevation angle motor of the cradle head are connected with output ports of the single chip microcomputer. According to sound signals picked up by the four sound pick-ups, a time-delay estimation based positioning method is adopted for determining position of a monitored objective, dynamic tracking of a specific objective is achieved, and the device has the advantages of less operation quantity, easiness in implementation, high positioning accuracy and the like. By the device, multi-angle coverage monitoring can be realized only with a single camera, and monitoring capability is enhanced while monitoring cost is saved.

Description

technical field [0001] The invention relates to a sound source positioning camera tracking device based on a generalized cross-correlation algorithm, which can enable a camera to automatically track a monitoring target, and belongs to the field of measurement technology. Background technique [0002] At present, domestic and foreign video monitoring devices can be roughly divided into two types, one is a static monitoring device, and the other is a dynamic monitoring device. The camera of the static monitoring device is fixed, and can only shoot a certain scene, and cannot realize the dynamic tracking of the monitoring target, and its monitoring range is small. There are many kinds of dynamic monitoring devices, and some use the method of rotating the camera at a uniform speed to realize multi-angle monitoring. This kind of monitoring device cannot realize the dynamic tracking of the monitoring target, and the monitoring effect is not ideal; although some monitoring devices ...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S5/22H04N7/18H04N5/225
Inventor 张培华林陈伟翟俊义袁思远魏子辉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap