Multi-Color Channel Gamma Correction in Fringe Projection Profilometry
Three-dimensional shape measurement plays an important role in various fields. As a way of three-dimensional measurement, fringe projection profilometry (FPP) is widely used because of its non-contact, simple structure, and high stability. One of the key challenges affecting measurement accuracy is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/1/74 |
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| author | Xiang Sun Yunpeng Zhang Lingbao Kong Xing Peng Zhenjun Luo Jie Shi Liping Tian |
| author_facet | Xiang Sun Yunpeng Zhang Lingbao Kong Xing Peng Zhenjun Luo Jie Shi Liping Tian |
| author_sort | Xiang Sun |
| collection | DOAJ |
| description | Three-dimensional shape measurement plays an important role in various fields. As a way of three-dimensional measurement, fringe projection profilometry (FPP) is widely used because of its non-contact, simple structure, and high stability. One of the key challenges affecting measurement accuracy is the gamma effect. With the development of FPP technology, multi-color channels are gradually applied to the measurement, and the response of different colors in the projector-camera system (pro-cam system) is not exactly the same. Therefore, more accurate gamma correction for different color channels is required. To solve this problem, a model of joint gamma correction for different color channels is proposed. In this model, the light is subdivided into three channels: red; green; and blue (RGB). In the pro-cam system, the different responses of different colors and the influence of background light intensity on gamma correction are comprehensively considered, and some error compensation is made for color crosstalk. Compared with the traditional gamma correction methods, the gamma correction method proposed in this paper is more accurate and has a larger effective working range after correction. This method is particularly beneficial in scenarios where multiple color channels are used for measurement, as it more accurately reflects the true measurement results for each channel. The effectiveness and accuracy of the method are validated through experiments. |
| format | Article |
| id | doaj-art-79b4eeabc101435f991e94e343c68e91 |
| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-79b4eeabc101435f991e94e343c68e912025-01-24T13:46:25ZengMDPI AGPhotonics2304-67322025-01-011217410.3390/photonics12010074Multi-Color Channel Gamma Correction in Fringe Projection ProfilometryXiang Sun0Yunpeng Zhang1Lingbao Kong2Xing Peng3Zhenjun Luo4Jie Shi5Liping Tian6School of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, ChinaSchool of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, ChinaShanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, School of Information Science and Technology, Fudan University, Shanghai 200438, ChinaCollege of Intelligent Science and Technology, National University of Defense Technology, Changsha 410073, ChinaSchool of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, ChinaSchool of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, ChinaSchool of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, ChinaThree-dimensional shape measurement plays an important role in various fields. As a way of three-dimensional measurement, fringe projection profilometry (FPP) is widely used because of its non-contact, simple structure, and high stability. One of the key challenges affecting measurement accuracy is the gamma effect. With the development of FPP technology, multi-color channels are gradually applied to the measurement, and the response of different colors in the projector-camera system (pro-cam system) is not exactly the same. Therefore, more accurate gamma correction for different color channels is required. To solve this problem, a model of joint gamma correction for different color channels is proposed. In this model, the light is subdivided into three channels: red; green; and blue (RGB). In the pro-cam system, the different responses of different colors and the influence of background light intensity on gamma correction are comprehensively considered, and some error compensation is made for color crosstalk. Compared with the traditional gamma correction methods, the gamma correction method proposed in this paper is more accurate and has a larger effective working range after correction. This method is particularly beneficial in scenarios where multiple color channels are used for measurement, as it more accurately reflects the true measurement results for each channel. The effectiveness and accuracy of the method are validated through experiments.https://www.mdpi.com/2304-6732/12/1/74fringe projectiongamma correctionmulti-color channel |
| spellingShingle | Xiang Sun Yunpeng Zhang Lingbao Kong Xing Peng Zhenjun Luo Jie Shi Liping Tian Multi-Color Channel Gamma Correction in Fringe Projection Profilometry Photonics fringe projection gamma correction multi-color channel |
| title | Multi-Color Channel Gamma Correction in Fringe Projection Profilometry |
| title_full | Multi-Color Channel Gamma Correction in Fringe Projection Profilometry |
| title_fullStr | Multi-Color Channel Gamma Correction in Fringe Projection Profilometry |
| title_full_unstemmed | Multi-Color Channel Gamma Correction in Fringe Projection Profilometry |
| title_short | Multi-Color Channel Gamma Correction in Fringe Projection Profilometry |
| title_sort | multi color channel gamma correction in fringe projection profilometry |
| topic | fringe projection gamma correction multi-color channel |
| url | https://www.mdpi.com/2304-6732/12/1/74 |
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