A line of sight measurement method and device based on a binocular camera
A technology of a binocular camera and a measurement method, which is applied in the field of sight measurement based on the binocular camera, achieves the effects of simple scene layout, saving layout costs, and real-time measurement
Active Publication Date: 2022-05-03
杭州锐见智行科技有限公司
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Problems solved by technology
[0003] The present invention provides a line of sight measurement method and device based on a binocular camera to solve the technical problem of tracking the subject while obtaining the line of sight observation direction of the subject
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Embodiment 1
[0045] Please refer to figure 1 , figure 1 A line-of-sight measurement method based on a binocular camera provided for an embodiment of the present invention includes steps S1 to S4; wherein,
[0046] Step S1, the first photo is taken by the first camera, and the second photo is taken by the second camera; both the first photo and the second photo include the face of the subject and the calibration plate; wherein, the two The target cameras are the first camera and the second camera.
[0047] In this embodiment, a distance of 1.1 meters is set between the calibration board and the observation area, the observation area is a table, and the intersection of the horizontal frame line and the vertical frame line of the table is the observation point, which is also the subject’s observation point during the measurement of sight line. point of gaze. The subject faces away from the calibration board and faces the observation area, the first camera B and the second camera C (B and C...
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The present invention provides a line of sight measurement method and device based on a binocular camera. The method includes: taking a first photo and a second photo through a binocular camera; each photo includes an observation point and a calibration plate; One face and the second face in the second photo, according to the first face and the second face, pupil information is obtained; the third coordinate in the coordinate system of the observation point calibration plate is obtained through the third camera; according to the third coordinate, A line of sight vector is obtained by combining the first information and the second information. Compared with the prior art, the present invention obtains the coordinates of the pupil in the coordinate system of the calibration plate based on the binocular camera, and combines the coordinates of the observation point to realize real-time measurement of various posture sight lines, and at the same time, it can track the subject in real time The pupil moves, the layout of the scene is relatively simple, and a lot of layout costs are saved.
Description
technical field [0001] The present invention relates to the field of sight tracking, in particular to a sight measurement method and device based on a binocular camera. Background technique [0002] At present, eye-tracking technology mainly uses methods such as electronics, optics, mechanics, and computer algorithms to obtain the current observation direction of the subject. Gaze tracking technology is widely used in virtual reality, fatigue detection, human-computer interaction and other fields. The existing technology mainly uses machine learning algorithms to track gaze, but the existing technology generally needs to collect a large amount of sight data and the premise is that the subject cannot move during the measurement process, so the limitations are large, and the layout of the scene is extremely cumbersome. Contents of the invention [0003] The invention provides a line of sight measurement method and device based on a binocular camera to solve the technical pr...
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IPC IPC(8): G06V40/18G06T7/70
CPCG06T7/70
Inventor 郭锡刘国清王启程杨广徐涵全丹辉
Owner 杭州锐见智行科技有限公司