Device and method for synchronistically acquiring human face image and gazing angle

Abstract

The invention relates to a device for synchronously collecting a face image and a visual fixation and a method thereof. In the method, an image collecting device collects the face image of a collected person: step 1, the receiver of a position tracker is respectively arranged on the head of the collected person, a visual fixation device and the image collecting device; step 2, a launcher of the position tracker emits a signal and the receiver receives the signal and generates position data and direction data of the receiver corresponding to the launcher; step 3, the position data and the direction data are processed by a calculating device, and the visual fixation of the collected person is obtained; step 4, the calculating device stores the face image and the visual fixation. The device for synchronously collecting the face image and the visual fixation and the method thereof can ensure space positions of each part while images are collected and further obtain the sight fixation direction which is indicated by Euler angle in a Cartesian coordinate system of the image collecting device.

Description

technical field [0001] The invention relates to the field of image acquisition, in particular to a device and method for synchronously acquiring face images and gaze angles. Background technique [0002] On the public database, the image data provided for the field of face recognition research includes changes in illumination, posture, expression, age and decoration, etc., but does not include the gaze direction data of the human eye, so it cannot be used by the field of visual tracking research. The gaze tracking and recognition research field is concerned with the relative relationship of the gaze direction relative to the reference frame. Different researchers adopt different technical methods. Some researchers regard the world coordinate system as the reference system, but the image normal vector as the reference system is currently the mainstream. In order to clarify the relationship between the reference frame and the viewing angle, the 880nm LED is often placed on t...

AI Technical Summary

Problems solved by technology

Although the contrast between the pupil and iris can be improved by using the LED light source, the invisible LED light source will not interfere with the test, but it is required to limit the head movement of the person, or use a head-mounted implementation, and calculate the error generated by the geometric model and instability, both are bottlenecks in the research field of gaze tracking

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