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Desktop portable sight line tracking method and apparatus

An eye-tracking and portable technology, applied in the field of eye-tracking research and human eye detection, can solve the problems of cumbersome operation, cumbersome device and low tracking accuracy.

Inactive Publication Date: 2016-09-21
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, some eye-tracking devices currently on the market still have shortcomings such as bulky devices, high prices, cumbersome operations, low tracking accuracy, and the need for users to wear helmets. The eye-tracking method and device are of great significance

Method used

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  • Desktop portable sight line tracking method and apparatus
  • Desktop portable sight line tracking method and apparatus
  • Desktop portable sight line tracking method and apparatus

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Experimental program
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Embodiment 1

[0039] The desktop portable eye-tracking method described in this embodiment is based on figure 1 The device described above is installed at a suitable position between the screen and the user, and includes two infrared LED light sources with a wavelength of 850nm, an infrared CCD camera and a control host. The two infrared LED light sources are horizontally symmetrically distributed and installed on On a support, the three-dimensional direction position of the support is adjustable. An infrared filter is provided in the infrared CCD camera. The infrared CCD camera is connected with the control host, which includes an image acquisition control module and a line of sight tracking module, and the line of sight tracking module adopts the desktop portable line of sight tracking method described below to realize the function of line of sight tracking.

[0040] Combine below Figure 2-Figure 5 The steps of the desktop portable eye-tracking method of this embodiment will be describ...

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Abstract

The invention discloses a desktop portable sight line tracking method and apparatus. The method comprises the steps of clicking a preset calibration point on a screen by a user to perform calibration, and capturing a facial image of the user by a system; performing pupil localization and Purkinje hot spot localization on the captured facial image of the user, extracting an eigenvector, and standardizing the eigenvector; obtaining a mapping relationship through calibration point data, and substituting the standardized eigenvector of each frame of image into the mapping relationship to obtain actual fixation point coordinates; and extracting fixation point coordinates in all image frames to realize sight line tracking. According to the method and apparatus, an ellipse fitting-based improvement method is proposed for accurately locating the pupil; two Purkinje hot spots are simultaneously located through a clustering-based method; and the method and apparatus have the advantages of quickness and accuracy for localization.

Description

technical field [0001] The invention relates to the research field of human eye detection and line of sight tracking, in particular to a desktop portable line of sight tracking method and device. Background technique [0002] People obtain external information through various senses, and about 80% of the information is obtained through vision. Accurately measuring a person's gaze point or gaze direction is an important means to study their psychological activities. At present, eye-tracking technology has a wide range of applications in the fields of human-computer interaction and psychological research, such as car safety driving, market research and advertising analysis, assistive devices for the disabled, criminal psychology analysis and virtual reality, etc., and has a very broad prospect. [0003] Gaze tracking technology is mainly aimed at the detection and recognition of human eye movement, so as to detect the user's gaze point or gaze direction. In the early days, du...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06K9/00
CPCG06F3/013G06V40/193G06V40/197
Inventor 欧阳丹罗斌何赛灵蔡夫鸿
Owner SOUTH CHINA NORMAL UNIVERSITY
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