Image restoration method, device and three-dimensional reconstruction system

A technology of 3D reconstruction and camera device, which is applied in the field of image processing, can solve problems such as inaccurate information collected by the camera and affect the 3D reconstruction results of the measured object, achieve accurate 3D reconstruction results, realize error areas, and reduce multipath errors.

Active Publication Date: 2020-03-10
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The multi-path effect will lead to inaccurate information collected by the camera, thus affecting the 3D reconstruction results of the measured object

Method used

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  • Image restoration method, device and three-dimensional reconstruction system
  • Image restoration method, device and three-dimensional reconstruction system
  • Image restoration method, device and three-dimensional reconstruction system

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no. 1 example

[0039] Please refer to image 3 , image 3 A flowchart of the image restoration method provided by the embodiment of the present invention is shown. The image inpainting method includes the following steps:

[0040] Step S101 , acquiring an original image collected by a camera, wherein the original image is an image of an object to be measured covered with a sinusoidal grating.

[0041] In the embodiment of the present invention, the projection device 120 projects the sinusoidal grating on the measured object 110, and the original image may be the image of the measured object 110 collected by the camera 130 when the measured object 110 is covered with a sinusoidal grating, and the sinusoidal grating It may be a coding pattern projected by the projection device 120 onto the measured object 110 . The multi-path effect is generated in the sampling process of the camera device 130, the sampling result is the original image, and the actual pixel gray value imaged by the camera d...

no. 2 example

[0096] Please refer to Figure 11 , Figure 11 A schematic block diagram of an image restoration apparatus 200 provided by a preferred embodiment of the present invention is shown. The image restoration device 200 includes an original image restoration module 201 , a light intensity modulation value calculation module 202 , an error region determination module 203 and an image restoration module 204 .

[0097] The original image restoration module 201 is configured to acquire an original image collected by a camera, wherein the original image is an image of a measured object covered with a sinusoidal grating.

[0098] In this embodiment of the present invention, the original image restoration module 201 may be configured to perform step S101.

[0099] The light intensity modulation value calculation module 202 is configured to calculate the light intensity modulation value of each pixel in the original image.

[0100] In this embodiment of the present invention, the light i...

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Abstract

The present invention relates to the technical field of image processing, and provides an image restoration method, device and three-dimensional reconstruction system. The method includes: acquiring an original image collected by a camera, wherein the original image is an image of a measured object covered with a sinusoidal grating; Calculate the light intensity modulation value of each pixel point in the original image; determine the error area in the original image according to the light intensity modulation value of each pixel point; in the corrected image according to the reference point corresponding to each error pixel point in the error area The gray value of each error pixel is corrected to obtain a repaired image. The invention does not need to establish an additional model, realizes the repair of the error area by performing gray value correction on each error pixel point, can effectively reduce the multi-path error in the existing phase measurement profilometry, and obtains a more accurate three-dimensional reconstruction result.

Description

technical field [0001] The present invention relates to the technical field of image processing, and in particular, to an image restoration method, device and three-dimensional reconstruction system. Background technique [0002] Phase measuring profilometry (PMP) refers to the use of phase time domain coding to generate multiple projected patterns, which are projected onto the surface of the measured object through a projector, and then captured by a camera. Then, the three-dimensional coordinates of the measured object are calculated, and the three-dimensional reconstruction of the measured object is completed. [0003] In phase measurement profilometry, when the measured object has areas with sharp changes in reflectivity, since the image acquisition of the camera is an integration process, and each integration unit of the camera has a certain size, the size of the integration unit inside the camera is different. It may be infinitely small, so when each integration unit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/514G06T7/90
CPCG06T5/007G06T7/514G06T7/90G06T2207/10024
Inventor 刘凯孙伟伦卢勇
Owner SICHUAN UNIV
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