Fixation point track description method and system based on video analysis

Abstract

The invention discloses a fixation point trajectory description system based on video analysis. The fixation point trajectory description system comprises a data acquisition and preprocessing module,a pupil positioning module, a fixation point calibration module and a fixation point trajectory description module. The invention further discloses a fixation point track description method based on video analysis. A video eye movement image is collected; pretreatment operation is carried out, the coordinates of the pupil center and the corneal reflection facula center in an eye pattern are solvedthrough a pupil coarse positioning method and a pupil fine positioning method, the three-dimensional space mapping relation between a vector formed by the pupil center and the corneal reflection facula center and a fixation point is solved in combination with a dynamic head compensation model, and fixation point track description is conducted through the mapping function. According to the invention, the fixation point track of the user is obtained on the basis of establishing the fixation point three-dimensional space mapping relation, the pre-judgment capability of people on the region of interest of the user is improved, the optimization of advertisement webpage layout can be effectively supported, and the method has the advantages of being simple to use, high in method precision, largein application potential and the like.

Description

technical field [0001] The present invention relates to the technical field of eye movement tracking, in particular to a gaze point trajectory description method and system based on video analysis. Background technique [0002] In recent years, thanks to the development of virtual reality, human-computer interface technology, computer vision and other fields, iris recognition, gesture recognition, human eye detection, eye tracking and other technologies have been rapidly improved. Popularized in. The fixation point trajectory description method is a branch of human-computer interaction technology, and it is also the key to eye movement tracking technology. The accuracy of the fixation point trajectory description method directly affects the effect of eye movement tracking. [0003] Traditional gaze point trajectory description methods are mainly divided into two types: intrusive and non-intrusive. Intrusive methods, such as the electromagnetic coil method, mainly embed har...

AI Technical Summary

Problems solved by technology

Intrusive methods, such as the electromagnetic coil method, mainly embed hardware devices into the human eye, which leads to direct contact between the device and the human eye, which will cause direct or potential harm to the health of the human eye

The non-intrusive detection method is mainly based on the gaze point description method based on video image processing. This method detects and locates the pupil based on the contour of the eye. Compared with the previous invasive method, it has a great improvement in terms of comfort and accuracy. Improvement, but the detection tools required are large in size, inconvenient to carry, expensive, and the accuracy will be greatly reduced when the head moves

Images