Title:
PIV IMAGE CALIBRATION APPARATUS AND METHOD BASED ON LASER LINEAR ARRAY
Document Type and Number:
WIPO Patent Application WO/2023/023961
Kind Code:
A1
Abstract:
Disclosed in the present invention are a PIV image calibration apparatus and method based on a laser linear array, which relate to the technical fields of laser velocimetry and image inpainting, and can solve the problem of image distortion caused by a model shock wave in a high tide wind tunnel, thereby realizing distortion capture and correction. The apparatus comprises: a laser emission component, which is used for emitting a laser linear array with the characteristic of equal intervals; an optical assembly, which is used for performing light-splitting processing on laser lines, so as to form a laser raster in an experimental observation area; a camera, which is used for acquiring a distorted laser raster image obtained when a working condition of a wind tunnel experimental section model is adjusted to a PIV experimental working condition; and a background processor, which is used for performing calibration and inpainting on the distorted laser raster image on the basis of a distortion recovery and calibration algorithm of a neural network. By means of the present invention, a distorted shock wave image during a real model experiment can be accurately acquired, and the image spatial resolution at each position is then obtained.
Inventors:
WANG SHAOFEI (CN)
PAN CHONG (CN)
WANG JINJUN (CN)
PAN CHONG (CN)
WANG JINJUN (CN)
Application Number:
PCT/CN2021/114416
Publication Date:
March 02, 2023
Filing Date:
August 25, 2021
Export Citation:
Assignee:
NINGBO INSTITUTE OF TECHNOLOGY BEIHANG UNIV (CN)
International Classes:
G01P5/20; G01M9/02; G01M9/08; G01P21/02; G06T5/00; G06T7/80
Foreign References:
| CN112577697A | 2021-03-30 | |||
| CN105488807A | 2016-04-13 | |||
| US20130242286A1 | 2013-09-19 | |||
| CN111347431A | 2020-06-30 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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