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Geometrical shape and surface color real time imaging device

A real-time imaging and geometric shape technology, applied in the field of optical measurement and computer vision, can solve the problem of losing color information on the surface of objects, achieve the effect of avoiding matching and speeding up measurement

Inactive Publication Date: 2013-07-10
南京楚通自动化科技有限公司
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Problems solved by technology

[0004] However, the shortcomings of the existing methods are: the above method only obtains the three-dimensional shape of the measured object, but loses the color information of the object surface

Method used

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  • Geometrical shape and surface color real time imaging device

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Embodiment Construction

[0018] Such as figure 1 As shown, a real-time imaging device for geometric shape and surface color, including a near-infrared light source 1 with a wavelength of 800nm, a DLP projection module 2 of 0.3WVGA, a beam splitter 3, and a HAMAMATSU C2400-79 near-infrared light source arranged in sequence along the light propagation direction Camera 4, color camera 5, also includes computer 6, image acquisition card 7, Advantech IO acquisition card 8; wherein, computer 6 controls DMD projection module 2 to produce four near-infrared coded image projections with four-step phase shift through IO acquisition card 8 to the measured object in space; the reflected light reflected by the object is divided into two paths through the beam splitter 3, wherein the near-infrared light enters the near-infrared camera 4, and the visible light enters the color camera 5. Under the control of the IO acquisition card 8, the synchronization of the near-infrared camera 4 and the DMD projection module 2 i...

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Abstract

The invention discloses a geometrical shape and surface color real time imaging device which comprises a near-infrared source, a digital mirror device (DMD) projection module, a spectroscope, a near-infrared camera, a color camera and a computer. The computer controls the DMD projection module to generate different near-infrared coding rays to project to a space object to be tested through an IO capture card, and a reflection ray reflected by the object is divided into two paths through the spectroscope, wherein near-infrared light enters the near-infrared camera, and visible light enters the color camera. Images obtained by the near-infrared camera and the color camera are input into the computer through the image capture card, the images of the near-infrared camera are used for three-dimensional coordinate calculation of the object to be tested, and the images of the color camera are used for displaying surface texture and color of the object to be tested. Through projection of the near-infrared coding rays, the geometrical shape and surface color real time imaging device can not only obtain the three-dimensional coordinate calculation of the object to be tested, but also obtain the surface texture and the color of the object to be tested.

Description

technical field [0001] The invention relates to a real-time imaging device for geometric shape and surface color, which belongs to the technical field of optical measurement and computer vision. Background technique [0002] The three-dimensional measurement method of active vision is a non-contact three-dimensional measurement. Due to the advantages of fast measurement speed, high measurement point cloud density and low cost of active vision measuring tools, it has been developed rapidly in recent years and is widely used in online detection, reverse engineering, etc. Engineering, virtual reality, robot navigation, etc. The hardware equipment of active vision mainly consists of a projection device and a camera. The projection device projects a series of coded images to the object to be measured in space. The image projected on the surface of the object is deformed due to the change of the object's contour height, and the camera collects the deformed image. The analysis the...

Claims

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Application Information

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IPC IPC(8): G01B11/25G01J3/46
Inventor 徐静高丙团
Owner 南京楚通自动化科技有限公司
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