Gaze estimation method

A technology of line of sight estimation and gaze point, applied in the field of human-computer interaction, can solve problems such as poor head movement adaptability, and achieve the effect of reducing additional auxiliary equipment, improving accuracy, and reducing restrictive conditions.

Active Publication Date: 2012-09-12
BINHAI IND RES INST OF TIANJIN UNIV CO LTD
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Problems solved by technology

Its accuracy is generally 10-20mm, but it usually uses binocular cameras or multiple auxiliary light sources, and its adaptability to head movement is poor
In recent years, there are also many research technologies on line-of-sight estimation methods in China. Although the accuracy of line-of-sight estimation is relatively good, additional auxiliary light sources are also required.

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] In order to reduce additional auxiliary equipment, improve the adaptability to head movement and have better accuracy, the embodiment of the present invention provides a line of sight estimation method, see figure 1 , see the description below:

[0028] 101: The user gazes at several specified points on the screen according to the preset conditions, and obtains the horizontal and vertical coordinate data of the estimated value of the gaze point, and the horizontal and vertical coordinate data are used to calculate the calibration error S′ h ;

[0029] Wherein, when the user estimates the line of sight for the first time, a calibration is required, and the number of designated points is set according to the needs in practical ap...

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Abstract

The invention discloses a gaze estimation method. The gaze estimation method comprises the following steps: finding out calibration error by aligning; then estimating the distance between a face plane and a screen and establishing a three-dimensional model to obtain optical axis information of eyeballs by offset correction of the head and rotary correction of the head; and finally, obtaining the position of a fixation point. According to the gaze estimation method, only a camera is used and no auxiliary equipment is needed; the aim of furthering increasing the estimation precision is achieved by using a correction link by a user; in addition, due to the utilization of estimation of the distance between the face plane and the screen and the offset and rotation correction of the head, limiting conditions are reduced as much as possible, a comfortable use environment for a user is provided and the gaze estimation method has better precision and adaptability of the head motion; and on the basis of an eyeball of a human eye, the gaze estimation method based on a three-dimensional model is established so as to achieve the aim of increasing the estimation precision. According to the gaze estimation method, extra auxiliary equipment is reduced, the adaptability to the head motion is improved, and the better precision for sight light estimation is obtained.

Description

technical field [0001] The invention relates to the field of human-computer interaction, in particular to a line of sight estimation method. Background technique [0002] Human-computer interaction develops with the continuous development of science and technology. Human-computer interaction technology has undergone tremendous changes since the advent of computers. The development history of human-computer interaction is from humans adapting to computers to computers continuously adapting to humans. In the early stage of manual operation, the computer was a very large and clumsy binary computer. Users had to use computer code language and manual operation to use the computer; in the stage of job control language and interactive command language, the main users of computers (programmers) ) can debug programs and understand computer execution by memorizing many commands and typing keyboards, using batch job language or interactive command language; In the user interface (GUI)...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01G06K9/00
Inventor 车明张磊岑坤昉
Owner BINHAI IND RES INST OF TIANJIN UNIV CO LTD
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