Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing
Based on image processing technology, a solution to the interference of moving boundary in wind wave flow field calculation is proposed. Invariant background is extracted from image sequence by means of the minimum method, and the differences between image sequence and invariant background image are...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek
2021-01-01
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| Series: | Tehnički Vjesnik |
| Subjects: | |
| Online Access: | https://hrcak.srce.hr/file/379354 |
| _version_ | 1797206920000438272 |
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| author | Yajun Fang* Chuanqi Yu Xihua Wang Jun Zheng |
| author_facet | Yajun Fang* Chuanqi Yu Xihua Wang Jun Zheng |
| author_sort | Yajun Fang* |
| collection | DOAJ |
| description | Based on image processing technology, a solution to the interference of moving boundary in wind wave flow field calculation is proposed. Invariant background is extracted from image sequence by means of the minimum method, and the differences between image sequence and invariant background image are used to remove the invariant background of image sequence. The image segmentation threshold is determined based on maximum interclass variance method, and the scatter interference is removed by image filtering and morphological technology, to obtain the target image. Then the flow field is calculated by PIV technology and the results of the flow field before and after the boundary treatment are compared. The experimental results show that the accuracy and speed of flow field calculation are greatly improved after removal of moving boundary disturbance, and the results of wind wave flow field calculation accord with the motion mechanism of hydraulic wind wave. |
| first_indexed | 2024-04-24T09:14:40Z |
| format | Article |
| id | doaj.art-43ad2e5f5dc3414a80cbc9adb1b32175 |
| institution | Directory Open Access Journal |
| issn | 1330-3651 1848-6339 |
| language | English |
| last_indexed | 2024-04-24T09:14:40Z |
| publishDate | 2021-01-01 |
| publisher | Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek |
| record_format | Article |
| series | Tehnički Vjesnik |
| spelling | doaj.art-43ad2e5f5dc3414a80cbc9adb1b321752024-04-15T17:06:34ZengFaculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in OsijekTehnički Vjesnik1330-36511848-63392021-01-012841075108110.17559/TV-20210401114628Computation of Wind Wave Flow Field with Moving Boundary Based on Image ProcessingYajun Fang*0Chuanqi Yu1Xihua Wang2Jun Zheng3School of Economics and Management, Beijing Jiaotong University, Beijing, Beijing Tongzhou District Water Bureau, ChinaBeijing Tongzhou District Water Bureau, Beijing, ChinaTsinghua Sichuan Energy Internet Research Institute, Chengdu, Sichuan, ChinaTsinghua Sichuan Energy Internet Research Institute, Chengdu, Sichuan, ChinaBased on image processing technology, a solution to the interference of moving boundary in wind wave flow field calculation is proposed. Invariant background is extracted from image sequence by means of the minimum method, and the differences between image sequence and invariant background image are used to remove the invariant background of image sequence. The image segmentation threshold is determined based on maximum interclass variance method, and the scatter interference is removed by image filtering and morphological technology, to obtain the target image. Then the flow field is calculated by PIV technology and the results of the flow field before and after the boundary treatment are compared. The experimental results show that the accuracy and speed of flow field calculation are greatly improved after removal of moving boundary disturbance, and the results of wind wave flow field calculation accord with the motion mechanism of hydraulic wind wave.https://hrcak.srce.hr/file/379354flow fieldimage filteringinvariant backgroundmoving boundarymorphology |
| spellingShingle | Yajun Fang* Chuanqi Yu Xihua Wang Jun Zheng Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing Tehnički Vjesnik flow field image filtering invariant background moving boundary morphology |
| title | Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing |
| title_full | Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing |
| title_fullStr | Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing |
| title_full_unstemmed | Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing |
| title_short | Computation of Wind Wave Flow Field with Moving Boundary Based on Image Processing |
| title_sort | computation of wind wave flow field with moving boundary based on image processing |
| topic | flow field image filtering invariant background moving boundary morphology |
| url | https://hrcak.srce.hr/file/379354 |
| work_keys_str_mv | AT yajunfang computationofwindwaveflowfieldwithmovingboundarybasedonimageprocessing AT chuanqiyu computationofwindwaveflowfieldwithmovingboundarybasedonimageprocessing AT xihuawang computationofwindwaveflowfieldwithmovingboundarybasedonimageprocessing AT junzheng computationofwindwaveflowfieldwithmovingboundarybasedonimageprocessing |