Calibration of smartphone’s rear dual camera system
This paper aims to calibrate smartphone’s rear dual camera system which is composed of two lenses, namely; wide-angle lens and telephoto lens. The proposed approach handles large sized images. Calibration was done by capturing 13 photos for a chessboard pattern from different exposure positions. Fir...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Vilnius Gediminas Technical University
2021-12-01
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| Series: | Geodesy and Cartography |
| Subjects: | |
| Online Access: | https://journals.vgtu.lt/index.php/GAC/article/view/13434 |
| _version_ | 1819228025198215168 |
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| author | Mohammed Aldelgawy Isam Abu-Qasmieh |
| author_facet | Mohammed Aldelgawy Isam Abu-Qasmieh |
| author_sort | Mohammed Aldelgawy |
| collection | DOAJ |
| description | This paper aims to calibrate smartphone’s rear dual camera system which is composed of two lenses, namely; wide-angle lens and telephoto lens. The proposed approach handles large sized images. Calibration was done by capturing 13 photos for a chessboard pattern from different exposure positions. First, photos were captured in dual camera mode. Then, for both wide-angle and telephoto lenses, image coordinates for node points of the chessboard were extracted. Afterwards, intrinsic, extrinsic, and lens distortion parameters for each lens were calculated. In order to enhance the accuracy of the calibration model, a constrained least-squares solution was applied. The applied constraint was that the relative extrinsic parameters of both wide-angle and telephoto lenses were set as constant regardless of the exposure position. Moreover, photos were rectified in order to eliminate the effect of lens distortion. For results evaluation, two oriented photos were chosen to perform a stereo-pair intersection. Then, the node points of the chessboard pattern were used as check points. |
| first_indexed | 2024-12-23T10:50:43Z |
| format | Article |
| id | doaj.art-f5c82f116c84458aad2319f618a70380 |
| institution | Directory Open Access Journal |
| issn | 2029-6991 2029-7009 |
| language | English |
| last_indexed | 2024-12-23T10:50:43Z |
| publishDate | 2021-12-01 |
| publisher | Vilnius Gediminas Technical University |
| record_format | Article |
| series | Geodesy and Cartography |
| spelling | doaj.art-f5c82f116c84458aad2319f618a703802022-12-21T17:49:55ZengVilnius Gediminas Technical UniversityGeodesy and Cartography2029-69912029-70092021-12-0147410.3846/gac.2021.13434Calibration of smartphone’s rear dual camera systemMohammed Aldelgawy0Isam Abu-Qasmieh1Civil Engineering Department, Faculty of Engineering, Fayoum University, Fayoum, EgyptDepartment of Biomedical Systems and Informatics Engineering, Yarmouk University, Irbid, JordanThis paper aims to calibrate smartphone’s rear dual camera system which is composed of two lenses, namely; wide-angle lens and telephoto lens. The proposed approach handles large sized images. Calibration was done by capturing 13 photos for a chessboard pattern from different exposure positions. First, photos were captured in dual camera mode. Then, for both wide-angle and telephoto lenses, image coordinates for node points of the chessboard were extracted. Afterwards, intrinsic, extrinsic, and lens distortion parameters for each lens were calculated. In order to enhance the accuracy of the calibration model, a constrained least-squares solution was applied. The applied constraint was that the relative extrinsic parameters of both wide-angle and telephoto lenses were set as constant regardless of the exposure position. Moreover, photos were rectified in order to eliminate the effect of lens distortion. For results evaluation, two oriented photos were chosen to perform a stereo-pair intersection. Then, the node points of the chessboard pattern were used as check points.https://journals.vgtu.lt/index.php/GAC/article/view/13434camera calibrationdual camerasmartphoneZhang’s techniquechessboard patterncross ratio |
| spellingShingle | Mohammed Aldelgawy Isam Abu-Qasmieh Calibration of smartphone’s rear dual camera system Geodesy and Cartography camera calibration dual camera smartphone Zhang’s technique chessboard pattern cross ratio |
| title | Calibration of smartphone’s rear dual camera system |
| title_full | Calibration of smartphone’s rear dual camera system |
| title_fullStr | Calibration of smartphone’s rear dual camera system |
| title_full_unstemmed | Calibration of smartphone’s rear dual camera system |
| title_short | Calibration of smartphone’s rear dual camera system |
| title_sort | calibration of smartphone s rear dual camera system |
| topic | camera calibration dual camera smartphone Zhang’s technique chessboard pattern cross ratio |
| url | https://journals.vgtu.lt/index.php/GAC/article/view/13434 |
| work_keys_str_mv | AT mohammedaldelgawy calibrationofsmartphonesreardualcamerasystem AT isamabuqasmieh calibrationofsmartphonesreardualcamerasystem |