Intelligent video director method based on microphone array sound guidance

A microphone array and microphone technology, applied in the field of video director, can solve the problems of difficulty in capturing the target, inability to capture, and inconvenient deployment of microphones.

Inactive Publication Date: 2009-10-28
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

This method has the following deficiencies: 1. Tracking is a moving target, which cannot be captured by the method for a target that makes a sound and does not move; 2. It relies on the segmentation of the background image, so when the background image changes (such as in a playing video) In front of the projection screen), this method is difficult to capture the real target; 3. The user example training method is not adopted f

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  • Intelligent video director method based on microphone array sound guidance
  • Intelligent video director method based on microphone array sound guidance
  • Intelligent video director method based on microphone array sound guidance

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Embodiment Construction

[0050] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0051] Such as figure 1 As shown, the present embodiment realizes the video guide in an area of ​​4.5m * 4.5m, and the position adopts two-dimensional plane coordinates. , so at least 4 are required, and at least 5 are required if the space is 3-dimensional coordinates) to form a microphone array. The positions of these microphones are not collinear (if they are in space, they are required to be non-coplanar), they can be arranged in any shape and distance, and the sound emitted by a sound source at any position in the area can be heard by more than 4 (5 in space) mi...

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Abstract

The invention relates to an intelligent video director method based on microphone array sound guidance, belonging to the field of intelligent technology. The method comprises the following steps of: photographing several positions of a space/region by the user and taking the photos as demonstrations and memorizing the photos in a training set; collecting the sound in the space/region by a microphone array; analyzing the audio data of each microphone by a sound source localization method to locate the positions of the sound source; referring to the training set to calculate the photographing parameters of the camera/high-speed balls corresponding to the positions of the sound source by a K-neighbor method; and guiding the camera to photograph by the given parameters. The method can alternatively capture corresponding target videos automatically, needs not to measure or collate the position of the camera, and has excellent adaptability to the environment; the specified range GCC-PHAT time delay computation method and the least square method position-computation method adopted by the method have a certain immunity to the noise interference so that the method can inhibit the interference of the corresponding noise well.

Description

technical field [0001] The invention relates to a method in the technical field of video guidance, in particular to an intelligent video guidance method based on microphone array sound guidance. Background technique [0002] The technology of guiding the camera to automatically capture the video of a certain target (such as a person) in a space / area is a video guidance technology. This technology can capture the video of the target according to the user's preset requirements without the intervention of a human guide, so it is called It is an intelligent video guidance technology. According to the type and number of cameras used, the intelligent video guidance system can be divided into two different technologies: multi-camera guidance and single-camera guidance. [0003] There are multiple cameras in the multi-camera guidance system, and the system captures the video of the target by selecting one of the cameras (usually the one closest to the target and with the best shoot...

Claims

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Application Information

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IPC IPC(8): H04N5/232G01S5/18
Inventor 谷红亮申瑞民
Owner SHANGHAI JIAO TONG UNIV
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