Wearable device for sight focus positioning and sight focus positioning method

Abstract

A wearable apparatus for sight line focus positioning and a method for sight line focus positioning. The apparatus comprises: a glasses stand (1), wherein left and right eyeglass frames of the glasses stand (1) are respectively mounted with a plurality of infrared light sources (2), the plurality of infrared light sources (2) are distributed at different positions on the left and right eyeglass frames for illuminating irises from different angles, and the left and right eyeglass frames are further respectively mounted with a camera (3) used for shooting an iris image illuminated by the infrared light sources; the glasses stand (1) is further mounted with a signal processing unit (4), wherein the signal processing unit (4) comprises: a synchronization control module used for controlling turn-on of the plurality of infrared light sources respectively according to a set order, and while the infrared light sources are turned on, synchronously triggering the cameras (3) on the eyeglass frames where the infrared light sources are turned on to shoot the iris image illuminated by the infrared light sources, and an image processing module used for processing the iris image to establish a 3D model of the left-eye and right-eye irises; and a left-eye and right-eye sight line focus is positioned according to the 3D model of the left-eye and right-eye irises. Sight line focus positioning of high precision can be realized.

Description

technical field [0001] The invention relates to the technical field of gaze tracking, in particular to a wearable device for gaze focus positioning and a gaze focus positioning method. Background technique [0002] Humans obtain a lot of information through the eyes, and at the same time use the eyes to express emotions and ideas. People can obtain the rich information transmitted by the eyes by tracking the focus of sight; and then carry out effective human-computer interaction, as well as research in communication, psychology and other fields. Gaze tracking is the process of using various detection methods to obtain the "gaze point" and ensure that it can be continuously tracked for a period of time. This technology is widely used in human-computer interaction, virtual reality and other fields. [0003] The existing eye-tracking technology often collects faces or facial images through cameras, and uses optical methods to calculate and track the direction of sight. Accor...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of non-wearable devices is that it needs an infrared point light source to illuminate the eyes accurately, so the head position cannot be moved casually; at the same time, it requires high precision of the camera and is easily affected by environmental factors, so it is not easy to promote

Compared with 2D tracking technology, the accuracy and stability have been improved. The main problem is that there are relatively few 3D features available, and only a few feature points can be used to obtain the approximate 3D motion information of the eyeball, but it is impossible to achieve high-precision line of sight positioning.

Images