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Sight tracking method and sight tracking device

A gaze tracking and gaze direction technology, applied in the fields of computer vision and image processing, which can solve the problems of reducing accuracy, not allowing rotation, and not being able to move.

Inactive Publication Date: 2012-12-19
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many eye-tracking systems, the user's head is restricted from moving, or only allowed to translate, not allowed to rotate, or only allowed to rotate within a small range, or not allowed to change facial expressions, which all reduce the user's ability to use The comfort and application range of the tracking system
Some technologies only determine the line of sight direction according to the head position, which greatly reduces the accuracy
In addition, most eye-tracking systems require a calibration process, which reduces ease of use

Method used

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  • Sight tracking method and sight tracking device
  • Sight tracking method and sight tracking device

Examples

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Embodiment Construction

[0057] Various example embodiments will now be described more fully with reference to the accompanying drawings.

[0058] figure 1 A block diagram of a gaze tracking device 100 according to an embodiment of the present invention is shown. Such as figure 1 As shown, the gaze tracking device 100 according to the present invention includes: a video acquisition module 110 , a head video processing module 120 , an eye video processing module 130 , and a gaze direction calculation module 140 .

[0059] The video capture module 110 acquires an image including the user's head as an input image. For example, the image may be acquired using a camera placed in front of the user.

[0060] The head video processing module 120 tracks key points of the user's face (for example, face outline, facial organ parts, etc.) based on the images acquired by the video acquisition module 110 .

[0061] Various existing face tracking methods can be used to track key points of the user's face. For e...

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Abstract

The invention provides a sight tracking method and a sight tracking device. The sight tracking device comprises a video acquiring module, a head video processing module, an eye video processing module and a sight direction calculating module, wherein the video acquiring module is used for obtaining an image of the head part of a user, and the image is used as an input image; the head video processing module is used for tracking facial key points according to the input image; the eye video processing module is used for positioning a pupil center and an eyeball center according to the tracked facial key points so as to determine a three-dimensional coordinate of the pupil center and a three-dimensional coordinate of the eyeball center; and the sight direction calculating module is used for calculating a sight direction of a user by using the three-dimensional coordinate of the pupil center and the three-dimensional coordinate of the eyeball center.

Description

technical field [0001] The invention relates to computer vision and image processing technology, in particular to a line of sight tracking method and device. Background technique [0002] Gaze direction tracking technology has a very wide range of applications, such as in cognitive science, psychology, medicine, assisting the disabled and other fields. With the development of computer technology, eye-tracking technology is also used in human-computer interaction, virtual reality and other aspects. For example, some research works try to use line-of-sight or point-of-view detection devices as the input interface of the computer to obtain faster response and replace the mouse and keyboard to a certain extent. In addition, by obtaining the viewer's line of sight, the position of interest is obtained, so as to optimize the design of web pages and advertisements. [0003] Using different classification methods, gaze tracking technology can be divided into many categories, such ...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 冯雪涛沈晓璐张辉金亭培
Owner BEIJING SAMSUNG TELECOM R&D CENT
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