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Face setting method based on structured light

A technology of face positioning and structured light, which is applied in the field of face positioning to achieve the effects of improving positioning speed, avoiding matching calculations, and enhancing anti-interference ability

Inactive Publication Date: 2006-12-13
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the method of using structured light to locate the face

Method used

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  • Face setting method based on structured light
  • Face setting method based on structured light
  • Face setting method based on structured light

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Experimental program
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Embodiment Construction

[0023] figure 1 The flow chart of the active illumination type face positioning algorithm is as follows: In the flow process of the present invention, after the image is taken or input, it is processed, specifically as follows:

[0024] Such as Figure 4 As shown, it is a face position detection and tracking device applied to a stereoscopic display. The lower part of the screen uses a structured light generating device, and the upper part of the screen uses a camera as an image input device. The distance from the face to the screen is generally between 30 cm and 60 cm. When viewing the screen, it is generally not lower than the lower edge of the screen, and not higher than the 30-degree long angle range of the upper edge.

[0025] Taking a 17-inch stereoscopic display as an example, the relative arrangement dimensions of the components are as follows: Figure 5 shown. The 17-inch LCD panel is 338 mm long and 268 mm wide. Plus the surrounding frame is about 420 mm long and...

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Abstract

The related human face positioning method based on structural light comprises: projecting human face actively vertically or horizontally by the generator for said structural light on inferior part of a video device, filtering by 3*3 window, extracting light stripe by device, and determining face central position by PCA, PPCA or other ways according to the opposite structural feature. Wherein, the projected structural light can bend on opposite convex and concave face plane.

Description

technical field [0001] The invention relates to a method for locating a human face, in particular to a method for locating a human face based on structured light used by a video device. Background technique [0002] The research on face recognition has a long history. The earliest research work was carried out by the Frenchman Galton in the last century, but it has really developed in the last 30 years. There are usually three types of input images for face recognition: front, side, and oblique. Since Kanade's work in 1973, most face recognition research works have focused on frontal or near-frontal face images. [0003] Face image recognition is a very challenging topic with important theoretical research value and application value, and face location is the premise of face image recognition. Face positioning refers to checking whether an image contains a human face. If so, it is necessary to further determine the position and size of the human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 王元庆
Owner NANJING UNIV