Pupil center locating device and method as well as VR (virtual reality) equipment

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

Active Publication Date: 2018-09-25
BOE TECH GRP CO LTD
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  • Application Information

AI Technical Summary

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,

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  • Pupil center locating device and method as well as VR (virtual reality) equipment
  • Pupil center locating device and method as well as VR (virtual reality) equipment
  • Pupil center locating device and method as well as VR (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

An embodiment of the invention provides a pupil center locating device and method as well as VR (virtual reality) equipment. The pupil center locating device comprises a matrix operation circuit, a parameter operation circuit and a coordinate operation circuit, wherein the matrix operation circuit is used for acquiring a linear normal equation set according to acquired N boundary point coordinatesof a pupil area, and N is a positive integer larger than 5; the parameter operation circuit is used for acquiring parameters of an elliptic equation according to the linear normal equation set with the Cramer's rule; the coordinate operation circuit is used for acquiring center coordinates of the pupil area according to the parameters of the elliptic equation. The pupil center is located on the basis of an ellipse fitting algorithm. Compared with a projection coordinate method in the prior art, the method has the advantages that the computing accuracy is improved, the anti-interference capacity is improved, hardware can be implemented and integrated in the VR equipment, the processing speed is high, the processing time is short, and few logic resources are used.

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 care. 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 technolog...

Claims

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Application Information

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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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