Geometric parameter measurement method and device thereof, augmented reality device, and storage medium

A geometric parameter measurement device, comprising:

• a sight line determination unit, configured to acquire a left eye image and a right eye image upon a user gazing at a target object and determine a left eye sight line and a right eye sight line based on the left eye image and the right eye image, which images are acquired upon the user gazing at the target object;
• a convergence point determination unit, configured to determine, according to the left eye sight line and the right eye sight line, a convergence point of the left eye sight line and the right eye sight line;
• and
• a geometric parameter calculation unit, configured to calculate geometric parameters of the target object in a case where the convergence point coincides with a desired position on the target object;
• wherein the sight line determination unit comprises:
• a determination sub-unit of pupil positions and center positions of a left eye and a right eye, configured to, based on the left eye image and the right eye image, which images are acquired upon the user gazing at the target object, determine a left eye pupil position, a right eye pupil position, a left eye center position, and a right eye center position;
• and
• a sight line acquisition sub-unit, configured to determine the left eye sight line and the right eye sight line according to the left eye pupil position, the right eye pupil position, the left eye center position, and the right eye center position;
• wherein the geometric parameter calculation unit comprises:
• a distance calculation sub-unit, configured to respectively calculate a plurality of distances between positions of a plurality of convergence points and the user in a case where the positions of the plurality of convergence points coincide with a plurality of desired positions on the target object;
• and
• a geometric parameter calculation sub-unit, configured to determine the geometric parameters of the target object according to the plurality of distances, which are calculated, between the positions of the plurality of convergence points and the user, and a sight line deflection angle upon the user gazing at different desired positions on the target object.