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Measurement method of structured-light panoramic measurement system

A measurement system and measurement method technology, applied in the field of structured light panoramic measurement system, can solve the problems of complicated operation and easy loss of accuracy, and achieve high-precision effects

Active Publication Date: 2017-03-15
TSINGHUA UNIV +1
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Problems solved by technology

Since the camera can only shoot scenes within the field of view and the projector can only project images within its field of view, their field of view is generally less than 180 degrees, and to achieve a 360-degree panoramic measurement, the projector and the projector must be rotated. Camera, registration after measurement, complex operation and easy loss of accuracy

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  • Measurement method of structured-light panoramic measurement system
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  • Measurement method of structured-light panoramic measurement system

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Embodiment Construction

[0035] The measurement method of the structured light panoramic measurement system according to the present invention will be described in detail below with reference to the accompanying drawings.

[0036] refer to Figure 1 to Figure 8 , the measurement method of the structured light panorama measurement system of the present invention comprises steps:

[0037] S1: Design the first hyperboloid mirror 11 of the camera panorama subsystem 1 and the second hyperboloid mirror 21 of the projector panorama subsystem 2;

[0038] S2: the relative position of the camera 12 in the camera panorama subsystem 1 and the first hyperboloid mirror 11 and the relative position of the projector 22 in the projector panorama subsystem 2 and the second hyperboloid mirror 21 are set, so that the first hyperboloid The axis of symmetry of the hyperboloid of the mirror 11 is on the same straight line as the optical axis of the camera 12 and the outer focal point F1 of the first hyperboloid mirror 11 c...

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Abstract

The invention provides a measurement method of a structured-light panoramic measurement system. In the measurement method of the structured-light panoramic measurement system, two hyperbolic mirrors, which are a first hyperbolic mirror and a second hyperbolic mirror, are used to form a camera panorama subsystem and a projector panorama subsystem with a camera and a projector so as to form the structured-light panoramic measurement system. Because nonlinearity of the hyperbolic mirrors can cause precision losses so that a requirement to hardware is high, a frequency-conversion annular stripe template image and a constant-frequency umbrella stripe template image are designed to reduce the requirement to the hardware so as to guarantee high precision. And then a camera panorama subsystem imaging model and a projector panorama subsystem imaging model are established, and a phase-shift-method structured light measuring principle is combined to measure a three-dimensional coordinate of an object to be measured so that panorama measurement can be realized through a simple operation under the condition that the high precision is guaranteed.

Description

technical field [0001] The invention relates to a structured light panorama measurement system, in particular to a measurement method for the structured light panorama measurement system. Background technique [0002] Structured light measurement is an important measurement method in visual measurement. The camera is used to capture the template image projected by the projector and deformed on the surface of the measured target, so as to realize the reconstruction and measurement of the three-dimensional object. Since the camera can only shoot scenes within the field of view and the projector can only project images within its field of view, their field of view is generally less than 180 degrees, and to achieve a 360-degree panoramic measurement, the projector and the projector must be rotated. Camera, registration after measurement, complex operation and easy loss of accuracy. Contents of the invention [0003] In view of the defects existing in the prior art, the object...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 徐静刘顺涛王朋陈恳陈雪梅郑林斌何凤涛郭喜锋刘大鹏
Owner TSINGHUA UNIV
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