Intelligent display system automatically tracking head posture

A head posture and automatic tracking technology, applied in the field of intelligent recognition, can solve the problems of large impact of lighting on facial expressions, high image quality requirements, and low accuracy, and achieve the effects of protecting eyesight, improving usability, and wide viewing angle
CN103558910AActive Publication Date: 2014-02-05BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2014-02-05

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Abstract

The invention relates to an intelligent display system automatically tracking a head posture. The system can capture the head posture of a human body in real time, a display follows the head of the human body, the display and the head are constantly kept at optimum positions, eye fatigue can be relieved, and myopia can be prevented. The system comprises an image acquisition module, a vision algorithm processing module and a display control module. The image acquisition module is used for acquiring the image of the head of the human body in real time; the vision algorithm processing module is used for firstly preprocessing the image, constantly keeping the head at a vertical position in the image, secondly extracting feature points of a human face by the aid of an ASM (active shape model) algorithm, and finally acquiring the spatial posture of the head according to the triangular surveying principle of elevation angles and side-tipping angles. Head posture information is transmitted to a steering gear control module and then calculated by a single chip microcomputer to form a PWM (pulse width modulation) signal for controlling a steering gear, so that the display follows the head posture at two degrees of freedom of elevation and side-tipping.
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Description

technical field

[0001] The invention relates to an intelligent display system, in particular to an intelligent display system for automatically tracking the posture of a head, and belongs to the technical field of intelligent recognition. Background technique

[0002] As an indispensable human-computer interaction terminal for computers, monitors can be seen everywhere in our work and life. The current display posture (that is, the viewing angle) can only be adjusted manually, and cannot be adjusted automatically according to the change of the user's head posture. The horizontal and clear visual field of the human eye is 35°, and the vertical clear visual field is 20°. The change of head posture changes the area of ​​clear vision; at this time, if the posture of the monitor remains unchanged, it is difficult to have clear vision and it is easy to cause eye fatigue. However, frequent manual adjustments are not only cumbersome, but also cannot ensure that the monitor is exac...

Claims

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