Single lens structured light stereo imaging device and method for realizing stereo imaging of scenes in pipeline

A technology of stereo imaging and structured light, which is applied in the direction of using optical devices, measuring devices, stereo photography, etc., can solve the problems such as the inability to widely adapt to the measurement process of the inner wall of the pipeline, the inability to more effectively adapt to social needs, and the imaging methods are not ideal. Achieve the effect of improving the accuracy of 3D ranging, reducing the amount of data processing, and being easy to implement.

Inactive Publication Date: 2013-10-09
SHANGHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-dimensional measurement technology of structured light is becoming more and more mature, but because of its high-precision mechanical drive device, the cost is greatly increased, which brings certain difficulties to popularization and application
However, in the actual shooting process of the existing three-dimensional measurement stereo imaging method, two cameras need to be synchronized when zooming, changing the aperture, and changing the position, which is also a difficult problem in technical implementation.
The existing three-dimensional measurement stereoscopic imaging device and imaging method are not ideal enough, and cannot be widely used in the measurement process of the inner wall of the pipeline in the fields of industry and medicine, and cannot be more effectively adapted to social needs

Method used

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  • Single lens structured light stereo imaging device and method for realizing stereo imaging of scenes in pipeline
  • Single lens structured light stereo imaging device and method for realizing stereo imaging of scenes in pipeline
  • Single lens structured light stereo imaging device and method for realizing stereo imaging of scenes in pipeline

Examples

Experimental program
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Embodiment 1

[0026] In this example, see Figure 1~3 , a single-lens structured light three-dimensional imaging device, mainly composed of a camera 1, a half-mirror 2 and a grating projector 3, the camera 1 collects images on the inner wall of the pipeline 4 through the half-mirror 2, and the half-mirror 2 The structured grating 6 projected by the grating projector 3 is projected onto the inner wall 4 of the pipeline through reflection, and the camera 1 and the grating projector 3 are pulse-controlled by the controller, so that the structured grating 6 projected by the grating projector 3 is interrupted on the inner wall 4 of the pipeline Alternately appear, and then make the camera 1 pass through the half mirror 2 to collect images of the scene of the inner wall of the pipeline 4, and alternately obtain the image of the unstructured grating 6 and the image of the superimposed structured grating 6. The single-lens structured light stereoscopic imaging device in this embodiment adopts singl...

Embodiment 2

[0039] This embodiment is basically the same as Embodiment 1, especially in that:

[0040] In this embodiment, during the entire shooting process, the camera 1 and the grating projector 3 are pulse-controlled by the controller, wherein the cycle of the control pulse of the camera 1 is half of the control pulse cycle of the grating projector 3, so that the grating projector 3 projects The resulting structured grating 6 alternately appears intermittently on the inner wall 4 of the pipeline, so that the camera 1 can collect images of the scene on the inner wall 4 of the pipeline, so that each group of shooting can obtain a set of comparison consisting of an original image of the scene and a gridded image. image. In this embodiment, the controller is used to carry out pulse control synchronous coordination to control the camera 1 and the grating projector 3, so that the projection and shooting are carried out in sequence according to the set pace, which further simplifies the dete...

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Abstract

The invention discloses a single lens structured light stereo imaging device. The single lens structured light stereo imaging device comprises a camera, a semi-permeable mirror and an optical grating projector, wherein the camera carries out image acquisition on the inner wall of a pipeline through the semi-permeable mirror, the semi-permeable mirror transmits structural optical gratings projected by the optical grating projector to the inner wall of the pipeline through reflection, and the camera and the optical grating projector are respectively controlled, so that the structural optical gratings appear on the inner wall of the pipeline alternatively, and further the camera obtains images without the structural optical gratings and images with overlapped structural optical gratings alternatively. The invention further discloses a method for realizing stereo imaging of scenes in the pipeline. In the whole camera shooting process, single lens camera shooting and the structural optical gratings are combined to carry out image gridding, and the position coordinates of the camera are adjusted to shoot a series of images. Imaging of the inner wall of the pipeline is achieved by adopting an imaging method combining the single lens camera and the structural optical gratings, the shape variation of the surface of the inner wall of the pipeline is reflected according to the variation situations of light modes, and image acquisition of the scenes in the pipeline is simplified.

Description

Technical field [0001] The invention involves a image collection system and imaging method, especially the device and imaging method that involves an imaging method for internal scenes of the pipeline. It is used in industrial testing, biomedical engineering, medical diagnosis and three -dimensional measurement technology. Background technique [0002] With the development of science and technology, the research of intelligent and non -contact three -dimensional measurement methods has been widely valued.Three -dimensional measurement technology of structural light is becoming increasingly mature, but due to its high -precision mechanical driver device, the cost greatly improves the cost, which has some difficulties in popularization and application.In the actual shooting process of the existing three -dimensional measurement three -dimensional imaging method, two cameras need to be synchronized when zooming, changing aperture, and changing positions, and it is also difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G03B35/02
Inventor 林志鹏沈达王子驰薛雷师明系
Owner SHANGHAI UNIV
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