What are 3D Scanners?There are multiple types of 3D Scanners for different purposes. Conclusion: Future studies will need to focus on the improvement of the scanning speed and the quality of the scanned image. Therefore, the accuracy of the 3D scanner is acceptable. The differences between the measurements by the direct anthropometry method and the 3D scanner were not statistically significant. Results: The minimum and maximum measurement differences from three consecutive scans by the 3D scanner were 0.03 mm and 18 mm, respectively. The obtained data were analyzed using an independent sample t test with the SPSS software. The precision and accuracy of the measurements of the 3D scanner were then evaluated. The measurements of the 3D scanner were compared to the measurements of the same dimensions by a direct anthropometric method. ![]() After the 3D scans were imported to the Geomagic software, 10 anthropometric dimensions of 10 subjects were obtained. Methods: In this work, a 3D scan of the human body was obtained using DAVID Laser Scanner software and its calibration background, a linear low-power laser, and one advanced webcam. The aim of this study was to evaluate the precision and accuracy of a modified 3D scanner fabricated in this study. One of the applications of 3D scanners is the acquisition of anthropometric dimensions for ergonomics and the creation of an anthropometry data bank. Introduction: Three-dimensional (3D) scanners are widely used in medicine. Our study confirms that a carefully selected low-cost sensor is able to replace an expensive laser scanner in many plant phenotyping scenarios.Keywords: low-cost sensors 3D imaging David laser scanning system Microsoft Kinect parameterization close-up scanning In the present study, low-cost 3D imaging devices have been shown to be highly reliable for the demands of plant phenotyping, with the potential to be implemented in automated application procedures, while saving acquisition costs. The evaluation scenarios were chosen with respect to recorded plant parameters in current phenotyping projects. These parameters are compared regarding accuracy and correlation to reference measurements. Parameters extracted from the volumetric shape of sugar beet taproots, the leaves of sugar beets and the shape of wheat ears were evaluated. The 3D measuring accuracy of both low-cost sensors was estimated based on the deviations of test specimens. ![]() As low-cost systems, the David laser scanning system and the Microsoft Kinect Device were used. The aim of the present study is a comparison between two current 3D imaging low-cost systems and a high precision close-up laser scanner as a reference method. The use of RGBcameras for 3D reconstruction requires a significant amount of post-processing, whereas in this context, laser scanning needs huge investment costs. Several sensing techniques, like 3D reconstruction from multiple images and laser scanning, are the methods of choice in different research projects. Abstract:Over the last few years, 3D imaging of plant geometry has become of significant importance for phenotyping and plant breeding.
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