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Sight line tracking method

A line-of-sight tracking and line-of-sight technology, applied in the field of virtual reality, can solve the problems of users' relative motion sensitivity, affecting user experience, long time consumption, etc., and achieve the effect of improving user experience, increasing effective use time, and improving operating efficiency

Inactive Publication Date: 2018-06-01
深圳纬目信息技术有限公司
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Problems solved by technology

[0003] The problems with this method are: 1. The user looks at the sequential appearance of each point, the overall interaction steps are too many, and the time consumption is long (about 30 seconds), which greatly affects the user experience; 2. The relative movement of the user is relatively Sensitive, will affect the accuracy of the calibration

Method used

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  • Sight line tracking method

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Embodiment Construction

[0035] refer to figure 1 Shown is a schematic flow chart of a line of sight tracking method, the present invention adopts the following technical solutions:

[0036] A line of sight tracking method, characterized in that, comprising the following steps:

[0037] Step 1. Determine whether the system needs to be calibrated;

[0038] Step 2. If the result of step 1 is necessary, guide the user to calibrate;

[0039] Step 3. Use the system normally.

[0040] When the user uses or actively activates the calibration program for the first time, a special pattern is displayed on the screen to guide the user to adjust the eyes so that the eight bright spots are located in the user's iris, and the positions of the eight bright spots at this time are stored.

[0041] According to the standard process of nine-point calibration, let the user stare at nine points on the screen respectively, and detect the pupil center P and the centroid C of the detected bright spot in the image. The lin...

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Abstract

The present invention discloses a sight line tracking method. The method comprises the following steps: Step 1, pupil identification; Step 2, Purkinje image identification; and Step 3, calculation ofthe sight line on the screen landing point. The technical effects that can be achieved by the present invention are that: the time cost caused by the calibration of the user can be reduced, the use accuracy can be improved, the use efficiency can be improved, and user experience effect in virtual reality interaction can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of virtual reality methods, and in particular relates to a line of sight tracking method. Background technique [0002] Gaze tracking is a technology that uses mechanical, electronic, optical and other detection methods to obtain the subject's current "gaze direction". According to the composition and methods, it can be roughly divided into two types: invasive and non-invasive. , With the rapid development of smart devices, non-intrusive eye tracking technology based on digital video analysis has become more mainstream. Virtual reality technology presents the virtual world in front of users more realistically, while augmented reality and mixed reality combine virtual and reality. In the virtual reality (VR) experience in the prior art, some HMDs (head-mounted visual devices) use visual tracking technology, which requires the user's eyes to fixate on the interactive interface for calibration preprocessing. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01G02B27/01
CPCG02B27/017G06F3/013G06F2203/012
Inventor 张建虎栗明
Owner 深圳纬目信息技术有限公司
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