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Differential two-dimensional fixation point detection method and device

A detection method, gaze point technology, applied in the field of visual analysis

Active Publication Date: 2021-08-20
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, most of the existing appearance-based methods are designed for fixed-type equipment. The size and camera parameters of these equipment are easy to obtain. equipment

Method used

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  • Differential two-dimensional fixation point detection method and device
  • Differential two-dimensional fixation point detection method and device
  • Differential two-dimensional fixation point detection method and device

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Embodiment Construction

[0053] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0054] An embodiment of the present invention provides a differential two-dimensional fixation point detection method, such as figure 1 Shown is the flow chart of differential two-dimensional fixation point detection method of the present invention;

[0055] The method includes the following steps:

[0056] S1: Obtain the coordinates of the calibration point preset on the screen, and the calibration picture of the tester looking at the calibration point; wherein, the calibration picture includes the face image of the tester;

[0057] S2: Obtain a picture to be detected in which the tester gazes at the point to be detected, wherein the picture to be detected includes a face image of the tester;

[0058] S3: Input the obtained calibration picture, the co...

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Abstract

The invention discloses a differential two-dimensional fixation point detection method and device, and belongs to the technical field of visual analysis. The method comprises the following steps: acquiring a face image of a tester watching a preset calibration point and a face image watching a to-be-tested point; according to the feature extraction neural network and the collected calibration data, performing calculation to obtain calibration image features of the testee and to-be-detected image features; obtaining coordinates of a fixation point of the tester on a screen according to the calibration image features and the to-be-detected features; and carrying out weighted summation on prediction results obtained by multiple times of calibration to obtain a fixation point sequence of the testee, thereby rapidly and accurately mining an interested region of the testee.

Description

technical field [0001] The invention relates to the technical field of visual analysis, in particular to a differential two-dimensional fixation point detection method and device. Background technique [0002] Eye movement detection and analysis technology has received extensive attention and plays an important role in virtual reality, human-computer interaction, medical health and other fields. Interaction based on actions such as eye movement and blinking can effectively improve user experience, and has considerable application prospects in virtual reality environments. In the field of medical and health, eye movement signals are considered to be closely related to the psychological state of patients, and the analysis of eye movement signals is of great significance for the early detection of mental diseases. [0003] Early eye movement detection methods mainly relied on professional equipment such as infrared eye trackers. Their portability and ease of use limited their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/20G06K9/32G06N3/04G06N3/08
CPCG06N3/08G06V40/168G06V40/193G06V10/22G06V10/25G06N3/045
Inventor 马惠敏李润桐王荣全丁家伟
Owner UNIV OF SCI & TECH BEIJING