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Three-dimensional image measuring method

A measurement method and three-dimensional image technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of three-dimensional measurement accuracy limitation, fringe detection accuracy limitation, and inability to obtain measurement accuracy, etc., to achieve high-precision three-dimensional measurement, large solution The effect of adjusting precision and high judgment precision

Inactive Publication Date: 2012-08-22
SUZHOU FUTUO INFORMATION TECH
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Problems solved by technology

[0017] However, there is still a problem in the above technology, that is, for objects with complex surface color or reflection characteristics, since the intensity of reflected light stripes is affected by the surface color and reflection characteristics of the object, the detection accuracy of stripes is limited, and the three-dimensional measurement The accuracy is also limited, which means that although the above technology can achieve three-dimensional measurement with only one projection, it cannot obtain higher measurement accuracy for objects with complex surface colors or reflective properties.

Method used

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Embodiment Construction

[0047] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0048] Figure 5 It is a system structure block diagram of the present invention, and the present invention uses common equipment such as computers, projectors and cameras. The color and light intensity dual modulation structured light information is generated by the computer 1, the projector 2 projects the projected light onto the measured object 3, the camera 4 captures the projected light image reflected by the measured object 3 and inputs it to the computer 1, and the computer 1. Perform image processing such as color and intensity demodulation and three-dimensional information calculation on the digital image, and calculate the three-dimensional information of each point on the surface of the measured object 3 . The measurement method can realize high-speed and high-precision three-dimensional measurement.

[0049] Image 6 It is a structural dia...

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Abstract

The invention provides a non-contact three-dimensional image measuring method. The steps include that a projection light composited by a color modulation and a light intensity modulation is projected by a projecting apparatus (2) to an object (3) to be measured, the projection light is reflected by the object (3) to be measured, and then is shot by a digital camera (4) and input into a computer (1) for an image processing, and three-dimensional information of a surface of the object (3) to be measured can be calculated. A high speed, high accuracy three-dimensional measurement can be achieved.

Description

technical field [0001] The invention relates to a three-dimensional image measurement method, specifically, a three-dimensional image measurement method that projects modulated strip-shaped structured light onto a measured object, uses a digital camera to capture its reflected image, and calculates the three-dimensional information of its surface by a computer . Background technique [0002] Three-dimensional image measurement is a non-contact measurement method. By taking images of the measured object and using computer image analysis, it can calculate the three-dimensional information of the surface of the measured object, that is, the three-dimensional coordinates of each measurement point on the surface of the object, so that it can be calculated. Measure the distance, surface area and volume between various measurement points on the surface of the object. [0003] The existing three-dimensional image measurement technology can be divided into two categories: passive an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
Inventor 卢存伟
Owner SUZHOU FUTUO INFORMATION TECH
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