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A gaze tracking system and method based on a standardized eye image

A technology of eye image and gaze tracking, applied in the field of human-computer interaction, to overcome inaccurate gaze tracking

Active Publication Date: 2017-12-12
BEIJING 7INVENSUN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to provide a system and method for tracking gaze based on standardized eye images, thereby solving the aforementioned problems in the prior art

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  • A gaze tracking system and method based on a standardized eye image
  • A gaze tracking system and method based on a standardized eye image
  • A gaze tracking system and method based on a standardized eye image

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Embodiment Construction

[0074] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0075] The line-of-sight tracking system based on the standardized eye image of the present invention includes k light sources arranged around the target screen to determine the position of the viewpoint toward the user's eyes and capable of forming k non-collinear corneal reflection spots on the user's cornea, and A camera arranged at any point around the target screen to capture the image of the user's eyes, and an image conversion and analysis device, the image conversion and analysis device is connected to the camera, and this connection can be wired or wireless Connection, such as connection ...

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Abstract

The invention discloses a line-of-sight tracking system and method based on a standardized eye image. The system of the invention includes three or more infrared light sources and an infrared camera. Three or more light sources are used to form corneal reflection spots on the cornea, and the camera is located at any point around the target screen to capture images of the user's eyes. The method of the present invention transforms the position of the eyeball marker point in the current eye image to the position of the eyeball marker point in the standardized eye image, and then obtains the position of the viewpoint in the target screen by solving the transformation of the position of the eyeball marker point in the standardized eye image, thereby performing eye tracking. The system and method of the present invention effectively overcome the problems in the existing gaze tracking method based on eye image information: the inaccurate gaze tracking caused by head movement, the need for complex hardware devices, and the need for more calibration points.

Description

technical field [0001] The present invention relates to the field of human-computer interaction technology, in particular to a system and method for tracking gaze based on standardized eye images. Background technique [0002] Sight is the imaginary straight line between the eyes and the object when looking at things with the eyes, which reflects the interaction between people and the environment. The eye point is where the eye falls, and it is imaged in the fovea (the area of ​​the retina where vision is sharpest). Gaze tracking is a technology that uses eye movement measurement equipment to measure the movement of the eyes to estimate the direction of the gaze or the position of the viewpoint. Gaze tracking has a wide range of applications in human-computer interaction, virtual reality, medical diagnosis, advertising analysis, and driver safety monitoring. [0003] Existing eye-tracking methods are divided into two types: invasive and non-invasive, according to whether a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01
Inventor 黃通兵
Owner BEIJING 7INVENSUN TECH