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Method and device for real-time adjusting face display scale in video image

A real-time adjustment and display ratio technology, applied in the field of image processing, can solve the problems of missed detection or false detection, high computational complexity and low efficiency of face recognition methods, and achieve the effect of improving efficiency

Active Publication Date: 2012-12-19
SHENZHEN TAISHAN SPORTS TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects and deficiencies of the prior art, and provide a method and device for adjusting the proportion of human faces in the video window in real time, which solves the problem of invisibility when the person in the video image is in a far position. In the case of clear faces, it is easy to miss detection or false detection, and the image-based face recognition method has high computational complexity and low efficiency.

Method used

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  • Method and device for real-time adjusting face display scale in video image
  • Method and device for real-time adjusting face display scale in video image
  • Method and device for real-time adjusting face display scale in video image

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with drawings and embodiments.

[0037] figure 1 The flow chart of the method for adjusting the display ratio of human faces in the video window in real time provided by the specific embodiment of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0038] S1: Obtain the distance of the user relative to the camera unit in real time;

[0039] Wherein, the step of obtaining the distance of the user relative to the camera unit in real time includes: measuring the attribute information of the user's relative marker through the infrared camera device with monocular vision or binocular vision through the user's subsidiary marker, and calculating the distance of the user relative to the camera unit; Alternatively, a distance measurement method using Doppler scanning, or a visible light camera device, or a depth camera device is used to obtain the distance of the user...

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Abstract

The invention discloses a method and a device for real-time adjusting a face display scale in a video window. The method comprises the following steps: a face matching window is adjusted through the actually measured distance information between a user and a camera unit, a face location is carried out in a video image according to the confirmed face matching window; when the face displayed in the video window is relatively small, the positioned face is captured and tracked; the positioned face image is zoomed and output to the video window through an interpolation algorithm. According to the method, the size of the face matching window can be automatically adjusted according to the distance between the user and the camera unit; the face is quickly and exactly positioned, and the efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to face recognition technology in image processing, and in particular to a method and device for real-time adjusting the display ratio of faces in video images. Background technique [0002] Face recognition in video images is usually based on knowledge or statistical methods to model the face, compare the matching degree of all possible regions to be detected with the face model, and obtain the possible face regions. Face recognition in the prior art is usually a feature-based face recognition method and an image-based face recognition method. [0003] Feature-based face recognition methods are mainly divided into low-level feature analysis methods (grayscale features, face contour features, organ features, etc.), group feature analysis methods, and deformation model analysis methods. This kind of face recognition method is intuitive, easy to be accepted and adopt...

Claims

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Application Information

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IPC IPC(8): H04N5/232G06K9/00
Inventor 陈济棠师丹玮袁江龙
Owner SHENZHEN TAISHAN SPORTS TECH CO LTD
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