Device for stereoscopic imaging of single-lens structured light and method for stereoscopic imaging of scenes in pipelines

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

Inactive Publication Date: 2016-08-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • 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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  • Device for stereoscopic imaging of single-lens structured light and method for stereoscopic imaging of scenes in pipelines
  • Device for stereoscopic imaging of single-lens structured light and method for stereoscopic imaging of scenes in pipelines
  • Device for stereoscopic imaging of single-lens structured light and method for stereoscopic imaging of scenes in pipelines

Examples

Experimental program
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Effect test

Embodiment 1

[0026] In this example, see Figures 1 to 3 , a single-lens structured light stereo imaging device, which is mainly composed of a camera 1, a half-lens 2 and a grating projector 3. The camera 1 collects images of the inner wall of the pipe 4 through the half-lens 2, and the half-lens 2 will The structured grating 6 projected by the grating projector 3 is emitted to the inner wall 4 of the pipeline by 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 discontinuous on the inner wall 4 of the pipeline Alternately appear, so that the camera 1 transmits the image of the scene of the inner wall 4 of the pipeline through the semi-mirror 2 to obtain the image of the unstructured grating 6 and the image of the superimposed structured grating 6 alternately. The single-lens structured light stereo imaging device of this embodiment adopts single-lens imaging, the system ...

Embodiment 2

[0039] This embodiment is basically the same as the first embodiment, and the special features are:

[0040] In this embodiment, in the whole shooting process, the camera 1 and the grating projector 3 are pulse-controlled by the controller, wherein the period of the control pulse of the camera 1 is half of the control pulse period of the grating projector 3, so that the grating projector 3 projects The structure gratings 6 appear intermittently and alternately on the inner wall 4 of the pipeline, so that the camera 1 can capture images of the scene on the inner wall 4 of the pipeline, so that each group of shots can obtain a set of contrasts consisting of an original scene image and a gridded image. image. In this embodiment, the controller is used to control the camera 1 and the grating projector 3 by synchronizing and coordinating pulse control, so that the projection and shooting are performed in sequence according to the set pace, which further simplifies the detection met...

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Abstract

The invention discloses a single-lens structured light three-dimensional imaging device, which is composed of a camera, a half-lens and a grating projector. The camera and the grating projector are controlled separately, so that the structured grating alternately appears intermittently on the inner wall of the pipeline, and then the camera alternately obtains the image of the unstructured grating and the image of the superimposed structured grating. The invention also discloses a method for three-dimensional imaging of the scene in the pipeline. During the whole shooting process, the combination of single-lens photography and structured grating for image gridding is adopted to adjust the camera position coordinates to perform a series of images. The invention adopts an imaging method combining a single-lens camera and a structured grating to image the inner wall of the pipeline, reflects the shape change of the surface of the inner wall of the pipeline according to the change of the light mode, and simplifies the image collection of the scene in the pipeline.

Description

technical field [0001] The invention relates to an image acquisition system and an imaging method, in particular to a device and an imaging method for imaging interior scenes of a pipeline, which are applied to the technical fields of industrial inspection, biomedical engineering, medical diagnosis and three-dimensional topography measurement. Background technique [0002] With the development of science and technology, the research of intelligent, non-contact three-dimensional measurement stereo imaging method has been widely paid attention to. Structured light three-dimensional measurement technology 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 and consistent when zooming, changing the...

Claims

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Application Information

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Patent Type & Authority Patents(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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