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Pupil positioning method and device based on angular point detection

A technology for pupil positioning and corner detection, which can be used in instruments, calculations, character and pattern recognition, etc., to solve problems such as low detection speed, achieve high precision and reduce errors.

Pending Publication Date: 2022-07-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a pupil positioning method and device based on corner point detection, to at least solve the technical problem of low detection speed of existing pupil positioning methods

Method used

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  • Pupil positioning method and device based on angular point detection
  • Pupil positioning method and device based on angular point detection
  • Pupil positioning method and device based on angular point detection

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Embodiment 1

[0071] According to an embodiment of the present invention, a method for locating pupil based on corner detection is provided, see figure 1 , including the following steps:

[0072] S101: perform rough positioning on the face image to extract the partial image of the human eye;

[0073] S102: segment the partial image of the human eye, and extract the left-eye image and the right-eye image;

[0074] S103: Perform pupil positioning on the left-eye image and the right-eye image by means of joint positioning of corner points.

[0075] In the pupil positioning method based on corner detection in the embodiment of the present invention, firstly, the face image is roughly positioned to extract the partial image of the human eye; then the partial image of the human eye is segmented to extract the left eye image and the right eye image; finally The pupil positioning of the left eye image and the right eye image is carried out by means of joint positioning of corner points. The inve...

Embodiment 2

[0164] According to another embodiment of the present invention, a pupil positioning device based on corner detection is provided, see Figure 8 ,include:

[0165] A coarse positioning extraction unit 201, configured to perform coarse positioning on a face image to extract a partial image of the human eye;

[0166] A segmentation and extraction unit 202, configured to segment the partial image of the human eye, and extract the left-eye image and the right-eye image;

[0167] The pupil positioning unit 203 is configured to perform pupil positioning on the left-eye image and the right-eye image by means of joint positioning of corner points.

[0168] In the pupil positioning device based on corner detection in the embodiment of the present invention, the coarse positioning and extraction unit 201 first performs coarse positioning on the face image to extract the partial image of the human eye; the segmentation and extraction unit 202 then divides the partial image of the human ...

Embodiment 3

[0215] A storage medium storing a program file capable of implementing any one of the above-mentioned methods for locating pupils based on corner detection.

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Abstract

The invention relates to the field of machine vision image processing, in particular to a pupil positioning method and device based on angular point detection. According to the method and device, firstly, a face image is subjected to coarse positioning, and a human eye part image is extracted; segmenting the human eye part image, and extracting a left eye image and a right eye image; and finally, performing pupil positioning on the left eye image and the right eye image by adopting a corner joint positioning mode. According to the invention, the angular point detection algorithm is applied to the eye image and is improved, so that errors are reduced when pupil positioning is carried out, and higher precision is obtained.

Description

technical field [0001] The invention relates to the field of machine vision image processing, in particular, to a method and device for locating pupils based on corner detection, which is a single-frame detection technology. Background technique [0002] The eye is an extremely important organ of the human body. Through the human eye, we can obtain image and text information from the outside world and convey emotions. At the same time, the eye also contains rich content. Through the eyes, we can learn a lot of information about a person, such as emotions, identity, etc. Gaze tracking is a technology that tracks the visual direction and attention of the human eye. It is of great research value in many applications such as driver fatigue driving detection, attention analysis, identity recognition, and gaze control equipment. [0003] Gaze tracking is an important research topic in the field of computer vision, which is valuable from scientific research to commercial applicatio...

Claims

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Application Information

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IPC IPC(8): G06V40/18G06V10/774G06V10/26G06V10/25G06K9/62
CPCG06F18/214
Inventor 陈小林吴志佳李荅群王雨青王博
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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