Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Line of sight tracking method and device

A technology of sight direction and eyeball, which is applied in the field of video analysis and eyeball tracking, can solve the problems of high technical cost, not being widely applicable to mobile devices, and not suitable for wearing, etc., and achieve the effect of low computing cost, low cost, and convenient wearing

Active Publication Date: 2017-09-22
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing technology has high cost, is not suitable for wearing, cannot be widely applied to various mobile devices, and requires manual calibration and user training.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Line of sight tracking method and device
  • Line of sight tracking method and device
  • Line of sight tracking method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] like figure 1 As shown, this embodiment discloses a line-of-sight tracking method, including:

[0022] S1. Construct an eyeball model using the current eyeball picture collected by a single camera, and establish a projection model of the eyeball model in the camera coordinate system; wherein, the eyeball model includes a spherical eyeball and a circular iris;

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sight direction tracking method and device. The sight direction tracking method and device can solve the problem that the prior art is high in cost and requires manual calibration and user training. The method comprises structuring an eyeball model through current eyeball images collected by a single camera, and establishing a projection model of the eyeball model in a camera coordinate system; determining a transformation matrix between an eyeball coordinate system, where the eyeball model is located, and the camera coordinate system; determining a sight direction according to the transformation matrix. The device comprises a camera for collecting the eyeball images of a user in real time, a structuring unit for structuring the eyeball model according to the eyeball images collected by the camera and establishing the projection model of the eyeball model in the camera coordinate system, a transformation matrix determining unit for determining the transformation matrix between the eyeball coordinate system where the eyeball model is located, and the camera coordinate system, and a sight direction determining unit for determining the sight direction.

Description

technical field [0001] The present invention relates to the field of video analysis and eye tracking, in particular to a method and device for tracking the direction of sight. Background technique [0002] Gaze tracking technology was widely used in the fields of psychology and medicine in the early days. By analyzing the user's eye movements, it can judge the user's psychological state and health status. With the development of eye-tracking technology, more and more everyday applications are using eye-tracking technology to provide a lot of useful and interesting functions. For example, tracking the gaze direction of the eyeball can help locate the position the user is looking at, so that the mouse can be manipulated through eye movement, and even input; the gaze direction of the eyeball is also applied to shopping malls, supermarkets and other places to help merchants analyze the product area that the user is interested in ; In addition, there are many games that can use ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F3/01
CPCG06F3/013
Inventor 张兰刘克彬刘云浩
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com