An adjustable iris 3D information acquisition and measurement device

Abstract

The invention provides a kind of iris 3D information acquisition and measurement equipment, comprising image acquisition device, rotation device, X track, Y track; the rotation device drives the image acquisition device to rotate with the point on the iris direction as the center of circle; and the rotation device is located at Behind the image acquisition device, away from the direction of the iris; the X track and the Y track are used to carry the image capture device, and enable the image capture device to slide on them simultaneously, and the composite motion trajectory is a curve. For the first time, it is proposed that through the cooperation of the rotating shaft and the two-dimensional guide rail, the concave motion trajectory of the camera suitable for iris collection can be realized without increasing the volume of the device.

Description

technical field [0001] The invention relates to the technical field of iris shape measurement, in particular to the technical field of 3D shape measurement. Background technique [0002] When performing 3D measurement, image methods, structured light methods, infrared spot methods, and camera plus depth sensor methods can usually be used. The latter three methods all need to actively emit light to illuminate the target. This will cause additional damage to the human eye. Although the power of the light source can be controlled, whether it is safe for long-term use will still cause users to worry. Therefore, the image method is a more acceptable method. [0003] However, the current common solutions for iris detection using images are to take photos of iris and use two-dimensional images to extract feature points for detection and recognition. However, this method does not utilize the real three-dimensional characteristics of the iris, so the detection and recognition acc...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that unless there is an accurate angle measurement device, the user is not sensitive to the angle, and it is difficult to determine the angle accurately; the size of the target object is difficult to accurately determine, especially in some applications where the target object needs to be replaced frequently. A lot of extra work is required, and professional equipment is required to accurately measure irregular targets

Measurement errors lead to camera position setting errors, which will affect the speed and effect of acquisition and synthesis; the accuracy and speed need to be further improved

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