Method and system for conducting real-time tracking on faces by monocular camera

A monocular camera and real-time tracking technology, which is applied in control/adjustment system, TV system components, image communication, etc., can solve the problems of complex tracking process and large amount of calculation, and achieve simple tracking method, small amount of calculation, Good real-time tracking effect

Inactive Publication Date: 2014-07-02
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for real-time tracking of a human face by a monocular

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  • Method and system for conducting real-time tracking on faces by monocular camera
  • Method and system for conducting real-time tracking on faces by monocular camera
  • Method and system for conducting real-time tracking on faces by monocular camera

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The present invention as figure 1 Shown is the flow chart of face tracking by monocular camera:

[0026] (1) Improve the existing face detection method so that it can detect and track faces with multiple angles and complex backgrounds;

[0027] (2) In order to save the time spent on detection and ensure the real-time performance of camera tracking, skin color detection is performed after compressing each frame of image, and then all image sub-windows that pass the detection are detected by AdaBoost classifier to obtain multiple Angle face, track the detected target;

[0028] (3) Combine the tracking result in (2) with the steering gear controller, so that the monocular camera can turn up and down, left and right at a certain angle driven by the steering gear, so that the detected face is always within the lens range of the camera In...

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Abstract

The invention discloses a method for conducting real-time tracking on faces by a monocular camera. The method comprises the steps that firstly, the camera is opened so as to search for whether the faces exist around the camera or not, images collected by the camera are transmitted to an image processor, the image processor calls an image processing program to conduct image compression, three AdaBoost cascade connection strong classifiers based on Haar characteristics are loaded on the image processing program, skin color detection is carried out on all the compressed images, a detected window is used for detecting the faces with multiple angles through the three AdaBoost cascade connection strong classifiers, after the faces are detected, real-time tracking is carried out on face targets, the difference between the central point coordinates of a face target area and the central point coordinates of the whole images is compared, the camera is adjusted to enable the central point coordinates of the face images to be approximately aligned with central point coordinates of the images, and real-time tracking on the faces is achieved. The method has the advantages that the tracking method is simple, the calculated amount is small in the tracking process, the hardware structure is simple, and real-time tracking of the face targets can be well achieved.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and relates to a method and a system for real-time tracking of a human face by a monocular camera. Background technique [0002] In recent years, with the rapid development of science and technology, the technology in the field of photography has also been continuously improved, such as the emergence of digital cameras, the continuous improvement of camera resolution, and the emergence of technologies such as automatic focus and distance adjustment, but these technologies still cannot avoid hand-held cameras. . So technicians thought of letting the camera lens rotate with the object to be photographed, or rotate according to people's wishes. For example, the Pixy color sensor that appeared on the market in recent years can enable the camera to follow a solid-color object of a specific color to rotate. When the solid-color object keeps moving, the camera can still keep the object within th...

Claims

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Application Information

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IPC IPC(8): H04N5/232G05D3/00G06K9/62
Inventor 张钦宇林威汪翠王培盛王伟志
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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