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High-resolution region-of-interest image acquisition method of PTZ camera

A high-resolution image, region-of-interest technology, applied in image analysis, image data processing, instruments, etc., can solve the problem of not taking into account the direct capture of features, and meet the requirements of low system hardware requirements and reduced response delays, easy to use. applied effect

Inactive Publication Date: 2010-04-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology needs to use at least two cameras to complete the task of capturing high-resolution images; it does not consider directly capturing the features, but uses the position of the person as the focus target of the moving camera

Method used

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  • High-resolution region-of-interest image acquisition method of PTZ camera
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  • High-resolution region-of-interest image acquisition method of PTZ camera

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Embodiment Construction

[0030] 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.

[0031] This embodiment uses a PTZ camera with a preset point function and a PC connected through the network to monitor the entrance of a laboratory, including the following steps:

[0032] The first step is to set several capture fields of view for the PTZ camera according to the default camera scene, and record the switching path between each capture field of view and the default camera scene.

[0033] The default camera scene is as figure 1 As shown in , the dotted line box is the field of view suitable for photography, and the two solid line boxes represent two o...

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Abstract

The invention discloses a high-resolution region-of-interest image acquisition method of a PTZ camera, which belongs to the technical field of video monitoring technology and comprises the following steps: setting a plurality of capturing view fields and recording corresponding switching means; performing background modeling and detecting a moving target; modeling and tracking the motion states of the moving target and the region of interest of the moving target; predicting a motion path of the region of interest; switching to a selected view field; recovering motion detection and tracking prediction after shooting a plurality of frames in a selected capturing view field; and analyzing an obtained image and repeating the steps. In the method, the direct positioning of the region of interest is realized by using a PTZ camera through the preset capturing view fields and the prediction of the motion path of the region of interest, the requirements on system hardware are low, and the high-resolution region-of-interest image of the region of interest can be accurately and quickly acquired.

Description

technical field [0001] The present invention relates to a method in the technical field of video surveillance, in particular to a method for obtaining high-resolution images of an area of ​​interest by a PTZ (Pan-Tilt-Zoom, pan-tilt-zoom) camera. Background technique [0002] The basic form of video surveillance is to use cameras installed in important places to remotely monitor objects, pedestrians and events in the scene. Related intelligent applications include the use of computer vision and image processing methods for video target detection, target recognition, target tracking, and description and understanding of target behavior. At present, the main method of video surveillance is to arrange specialized personnel to observe the collected video, and some intelligent functions, such as face or gait-based identification, have played a certain role, but they cannot replace observers. How to provide more effective and critical information to the observer and the image pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18G06T7/20
Inventor 刘坤杨杰马波
Owner SHANGHAI JIAO TONG UNIV
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