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Pupil center positioning device and method, virtual reality equipment

A center positioning and pupil technology, applied in character and pattern recognition, instruments, acquisition/recognition of eyes, etc., can solve problems such as low calculation accuracy and poor anti-interference ability

Active Publication Date: 2021-01-26
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a pupil center positioning device and method, and virtual reality equipment to solve the technical problems of low calculation accuracy and poor anti-interference ability of existing methods

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  • Pupil center positioning device and method, virtual reality equipment
  • Pupil center positioning device and method, virtual reality equipment
  • Pupil center positioning device and method, virtual reality equipment

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Embodiment Construction

[0051] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0052]Eye tracking technology is based on the image processing method, and the camera device installed in front of the eye captures the image of the eye in real time, and the image includes a high-brightness spot (purkinje image) formed on the cornea of ​​the eye. When the eyes fixate on different positions, the spherical eyeball turns and the light spot as the reference point does not move. After the position coordinates of the pupil center are obtained through data processing, the relationship betwe...

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Abstract

Embodiments of the present invention provide a pupil center positioning device and method, and a virtual reality device. The pupil center positioning device includes a matrix operation circuit, a parameter operation circuit and a coordinate operation circuit; the matrix operation circuit is used to obtain linear normal equations according to the obtained coordinates of N boundary points of the pupil area, and N is a positive integer greater than 5; the parameter operation circuit is used According to the linear normal equations, the parameters of the ellipse equation are obtained by using Cramer's rule; the coordinate operation circuit is used to obtain the center coordinates of the pupil area according to the parameters of the ellipse equation. The invention locates the pupil center based on the ellipse fitting algorithm. Compared with the projection coordinate method adopted in the prior art, it not only improves the calculation accuracy and improves the anti-interference ability, but also facilitates hardware implementation and integration in virtual reality equipment, and the processing speed is faster. , less processing time and less logic resource usage.

Description

technical field [0001] The invention relates to the technical field of eye control, in particular to a pupil center positioning device and method, and a virtual reality device. Background technique [0002] In recent years, virtual reality (Virtual Reality, VR) / augmented reality (Augmented Reality, AR) technologies have been gradually applied to fields such as display, games, and medical treatment. With the development of technology, people's expectations for VR / AR are getting higher and higher. The interaction method of changing the viewing angle by turning the head can no longer bring people a satisfactory product experience. An important technology for AR device experience. Eye Tracking technology is an intelligent human-computer interaction technology that uses eye movements to control machines. All operations can be completed by "seeing" with eyes. It not only frees hands, but also is the fastest and most humanized control method. The introduction of eye tracking tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G06K9/00
CPCG06F3/013G06F2203/012G06V40/19G06F17/12G06V40/193G06V10/955G06V10/443G06F17/16
Inventor 孙高明
Owner BOE TECH GRP CO LTD
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