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A 3D measurement and acquisition device based on a spatial light modulator

A technology of spatial light modulator and measuring device, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of increasing lens requirements and costs, high ambient light requirements, and large camera matrix volume, etc., to achieve guaranteed effects and Effects of stability, improved resolution, and improved utilization

Active Publication Date: 2019-08-06
天目爱视(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this increases the requirements and cost of the lens, and the camera shutter and ambient light requirements are higher when shooting with a telephoto lens
To sum up, the camera matrix composed of multiple cameras has a large volume, low resolution, and high requirements on the camera
[0004] In particular, there is currently no effective means for 3D imaging and 3D measurement of tiny objects by using multiple images for 3D synthesis

Method used

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  • A 3D measurement and acquisition device based on a spatial light modulator
  • A 3D measurement and acquisition device based on a spatial light modulator
  • A 3D measurement and acquisition device based on a spatial light modulator

Examples

Experimental program
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Embodiment 1

[0044] Embodiment 1 (microlens array)

[0045] In order to solve the above technical problems, an embodiment of the present invention provides a 3D information acquisition / measurement device. Please refer to figure 1 ,to Figure 5 , specifically including: a microlens array (spatial light modulator) 101 , an image acquisition device 201 , and an image processing device 100 . Each small lens on the microlens array 101 reflects images of different areas of the target object to different areas of the image acquisition unit 2011 of the image acquisition device 201 .

[0046] The image acquisition unit 2011 is an independent CCD or CMOS chip, and there can be one or more image acquisition units.

[0047] The matrix points of the above-mentioned virtual matrix are determined by the position of the image acquisition device 201 when the target image is collected, and the optical axes of the two adjacent reflectors of the microlens array 101 at least meet the following conditions...

Embodiment 2

[0081] Embodiment 2 (multi-reflection mirror, multi-transmission mirror)

[0082] Such as Figure 4 and Figure 5 The shown spatial light modulator 101 can be a mirror group composed of multiple mirrors 1011, and the number of mirrors 1011 can be determined according to the requirements for image quality, but generally should be more than three. If the number of reflecting mirrors 1011 is too small, the 3D information that can be obtained is not comprehensive; Figure 6 The shown spatial light modulator 101 can be a prism group composed of polygonal prisms 1012, and the number of prisms 1012 can be determined according to the requirements for image quality, but generally should be more than three. If the number of prisms 1012 is too small, the 3D information that can be obtained is not comprehensive; Figure 7 The shown spatial light modulator 101 may be a liquid crystal modulator 1013, and voltage is applied to change the refractive index of light in different regions of...

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Abstract

The invention provides a 3D collection device based on an optical array, and the device comprises an image collection device which is used for collecting an image; an optical array which is used for receiving light in different directions of the target object so as to transmit images of different areas of the target object to different areas of the image collection device; and an image processingdevice which is used for processing the plurality of images acquired by the image collection device to obtain 3D information of the target object. The technical problem that the multi-camera matrix acquisition resolution is low due to the size of the camera is noticed and proposed for the first time. Light rays in different directions of the target object are received by utilizing the optical array, so that images of different areas of the target object are transmitted to different areas of the image collection device, the size is reduced, and the 3D measurement / synthesis resolution is improved.

Description

technical field [0001] The invention relates to the technical field of 3D measurement of objects, in particular to the technical field of 3D acquisition of objects by using pictures and measurement of geometric dimensions such as length. Background technique [0002] At present, 3D acquisition / measurement equipment is mainly aimed at a specific object. After the object is determined, multiple cameras simultaneously collect multiple photos of the object to synthesize a 3D image of the object, and use the 3D point cloud data to measure the length and contour of the object. [0003] However, the use of multiple cameras makes the entire device bulky. And because the size of the lens and body of the current camera itself is fixed, the distance between adjacent cameras has a limit value (determined by the geometric size of the camera). In this case, the acquisition intervals of multiple cameras are relatively large, so that the final 3D point cloud or image synthesis effect is po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/24
CPCG01B11/00G01B11/02G01B11/24
Inventor 左忠斌左达宇
Owner 天目爱视(北京)科技有限公司