Standardized eye image based eye gaze tracking system and method

An eye image and gaze tracking technology used in the field of human-computer interaction

Active Publication Date: 2015-11-25
BEIJING 7INVENSUN TECH
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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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  • Standardized eye image based eye gaze tracking system and method
  • Standardized eye image based eye gaze tracking system and method
  • Standardized eye image based eye gaze tracking system and method

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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 through wif...

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Abstract

The invention discloses a standardized eye image based eye gaze tracking system and method. The system comprises three or more than three infrared sources and an infrared camera. The three or more than three infrared sources are used for forming corneal reflex light spots on a cornea. The infrared camera is arranged at any point of the periphery of a target screen, and is used for capturing an eye image of a user. According to the method, an eyeball mark point position in a current eye image is changed into an eyeball mark point position in the standardized eye image, the position of a viewpoint in the target screen is solved through transformation of the eyeball mark point position in the standardized eye image, so that eye gaze tracking can be performed. In the conventional eye image information based eye gaze tracking method, the eye gaze tracking is inaccurate due to head moving, complicated hardware devices are required, and more fixed points are required. Through adoption of the system and method, the above problems in the prior art are overcome effectively.

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 Applications(China)
IPC IPC(8): G06F3/01
Inventor 黃通兵
Owner BEIJING 7INVENSUN TECH
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