A Calibration Method for a Laser Triangulation Scanner Mounted on a Robot Arm for Surface Mapping [PDF]
Sensors, 2019 This paper presents and discusses a method to calibrate a specially built laser triangulation sensor to scan and map the surface of hydraulic turbine blades and to assign 3D coordinates to a dedicated robot to repair, by welding in layers, the damage on ...
Gerardo Antonio Idrobo-Pizo +2 more
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Advancements in 3D field-crop phenotyping using point clouds: a comparative review of sensor technology, target traits, and challenges under controlled and field conditions [PDF]
Frontiers in Plant Science3D phenotyping refers to the quantitative characterization of a plant’s structural and morphological traits in three-dimensional space, allowing for a detailed analysis of plant architecture and growth patterns. In recent years, rapid advancements in non-
Emmanuel Omia +5 more
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For a clinical application of optical triangulation to assess respiratory rate using an RGB camera and a line laser [PDF]
BMC Medical ImagingThis paper presents a non-contact and unrestrained respiration monitoring system based on the optical triangulation technique. The proposed system consists of a red-green-blue (RGB) camera and a line laser installed to face the frontal thorax of a human ...
Yoosoo Jeong +3 more
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STRICT GEOMETRIC CALIBRATION OF AN UNDERWATER LASER TRIANGULATION SYSTEM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 This paper will describe a novel approach for the calibration of an underwater laser triangulation system. Underwater triangulation systems, consisting of a line laser and a camera can be used to determine the geometry of submerged objects or the ...
H. Sardemann, C. Mulsow, H.-G. Maas
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SINGLE IMAGE LASER TRIANGULATION SYSTEM FOR 360° EXTERNAL INSPECTION OF CYLINDRICAL SHAPED OBJECTS USING INVERSE TRIANGULATION ALGORITHM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 This paper proposes a new Laser Triangulation System (LTS) that allows an 360° external inspection for each acquired image using two planar mirrors, one laser line projector, and one camera.
S. A. B. Petrovcic +3 more
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ROV Navigation in a Fish Cage with Laser-Camera Triangulation
Journal of Marine Science and Engineering, 2021 Aquaculture net cage inspection and maintenance is a central issue in fish farming. Inspection using autonomous underwater vehicles is a promising solution.
Magnus Bjerkeng +6 more
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A Laser Triangulation Displacement Sensor Based on a Cylindrical Annular Reflector
Photonics, 2023 The ellipticity of the spot caused by laser jitter has a significant effect on the measurement accuracy of the traditional laser triangulation method. In order to overcome the influence of laser characteristics on measurement and improve the accuracy of ...
Jiaqi Li, Wei Tao, Hui Zhao
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Laser Displacement Sensor Measurement Method Based on Residual Compensation [PDF]
Jisuanji gongcheng, 2018 Due to linear fitting,the measurement error of laser triangulation ranging technique is large,and the linearity decreases in the case of large range ranging.To solve this problem,a high precision laser displacement sensor measurement method based on ...
ZHAO Jinghai,SUN Feixian
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Sensors, 2023 Acoustic and optical sensing modalities represent two of the primary sensing methods within underwater environments, and both have been researched extensively in previous works.
Fredrik Fogh Sørensen +4 more
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Sensors, 2021 Surface flatness assessment is necessary for quality control of metal sheets manufactured from steel coils by roll leveling and cutting. Mechanical-contact-based flatness sensors are being replaced by modern laser-based optical sensors that deliver ...
Marcos Alonso +4 more
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