|
|
|
|
|
Husein Aji Pratama, Bima Sena Bayu Dewantara, Dadet Pramadihanto
Pág. 294 - 310
In stereo vision, an omnidirectional camera has high distortion compared to a standard camera, so the camera calibration is very decisive in its stereo matching. In this study, we will perform stereo matching for an omnidirectional camera with vertical a...
ver más
|
|
|
|
|
|
|
|
|
|
|
Shuwei Gan, Xiaohu Zhang, Sheng Zhuge, Chenghao Ning, Lijun Zhong and You Li
Space exploration missions involve significant participation from astronauts. Therefore, it is of great practical importance to assess the astronauts? performance via various parameters in the cramped and weightless space station. In this paper, we propo...
ver más
|
|
|
|
|
|
|
|
|
|
|
Hoyong Kim, Chanil Jeon, Kiwon Kim and Jeonghwa Seo
The present study suggests a methodology for acquiring wave elevation fields using a depth camera sensor, with assessment results for the test uncertainty. The depth camera module of an Azure Kinect is calibrated using marker arrays on the optic table, t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mariolino De Cecco, Alessandro Luchetti, Isidro Butaslac III, Francesco Pilla, Giovanni Maria Achille Guandalini, Jacopo Bonavita, Monica Mazzucato and Kato Hirokazu
In rehabilitation settings that exploit Mixed Reality, a clinician risks losing empathy with the patient by being immersed in different worlds, either real and/or virtual. While the patient perceives the rehabilitation stimuli in a mixed real?virtual wor...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yiran Li, Dong Zhao, Xueyi Ma, Jianzhong Zhang and Jian Zhao
In full-field 3D displacement measurement, stereo digital image correlation (Stereo-DIC) has strong capabilities. However, as a result of difficulties with stereo camera calibration and surface merging, 360-deg panoramic displacement measurements remain ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kuk Cho and Dooyong Cho
This paper describes a method that precisely estimates the position of images of traffic surveillance camera objects. We suggest a projection method with multiple traffic surveillance cameras through a local coordinate system into a global coordinate sys...
ver más
|
|
|
|
|
|
|
|
|
|
|
Alberto J. Perez, Javier Perez-Soler, Juan-Carlos Perez-Cortes and Jose-Luis Guardiola
Several calibration algorithms use spheres as calibration tokens because of the simplicity and uniform shape that a sphere presents across multiple views, along with the simplicity of its construction. Among the alternatives are the use of complex 3D tok...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jaime Arriaga, Gabriela Medellin, Elena Ojeda and Paulo Salles
Video monitoring has become an indispensable tool to understand beach processes. However, the measurement accuracy derived from the images has been taken for granted despite its dependence on the calibration process and camera movements. An easy to imple...
ver más
|
|
|
|
|
|
|
|
|
|
|
Hang Trieu, Per Bergström, Mikael Sjödahl, J. Gunnar I. Hellström, Patrik Andreasson and Henrik Lycksam
This study describes a multi-camera photogrammetric approach to measure the 3D velocity of free surface flow. The properties of the camera system and particle tracking velocimetry (PTV) algorithm were first investigated in a measurement of a laboratory o...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yanli Hou, Xianyu Su and Wenjing Chen
The alignment problem of a rotating optical measurement system composed of a charge-coupled device (CCD) camera and a turntable is discussed. The motion trajectory model of the optical center (or projection center in the computer vision) of a camera rota...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mingxin Liu, Xin Zhang, Tao Liu, Guangwei Shi, Lingjie Wang and Yi Li
A complete framework of on-orbit polarization calibration for the multichannel polarimetric camera is presented. Its advantage is that it shares the same calibration assembly with the radiometric calibration and doesn?t need the extra polarized light sou...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jiayuan Tao, Yuwei Wang, Bolin Cai and Keyi Wang
Planar targets with known features have been widely used for camera calibration in various vision systems. This paper utilizes phase-shifting wedge grating (PWG) arrays as an active calibration target. Features points are encoded into the carrier phase, ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Alessio Radice and Barbara Zanchi
The realization of hydromorphologic laboratory experiments on the propagation of aggrading or degrading sediment fronts requires simultaneous measurements of the sediment feeding rate, the profile of the free surface, and the flume bed elevation. In this...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kang Hyeok Choi, Changjae Kim and Yongil Kim
|
|
|
|
|
|
|
|
|
|
|
Huanan Dong, Ming Wen and Zhouwang Yang
Vehicle speed estimation is an important problem in traffic surveillance. Many existing approaches to this problem are based on camera calibration. Two shortcomings exist for camera calibration-based methods. First, camera calibration methods are sensiti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Christian Bräuer-Burchardt, Christoph Munkelt, Ingo Gebhart, Matthias Heinze, Stefan Heist, Peter Kühmstedt and Gunther Notni
In this study, we introduce a new calibration method for underwater optical stereo scanners. It uses air calibration, additional underwater parameters, and extended camera modeling. The new methodology can be applied to both passive photogrammetric and s...
ver más
|
|
|
|
|
|
|
|
|
|
|
Bin Liu, Fan Yang, Yixuan Huang, Ye Zhang and Guanhao Wu
Structured-light vision methods are widely employed for three-dimensional reconstruction. As a typical structured light pattern, grid pattern is extensively applied in single-shot three-dimensional reconstruction. The uniqueness of the grid feature retri...
ver más
|
|
|
|
|
|
|
|
|
|
|
Enzhan Zhang, Liang Li, Weiche Huang, Yucheng Jia, Minghu Zhang, Faming Kang and Hu Da
Large-scale particle image velocimetry (LSPIV) is a computer vision-based technique renowned for its precise and efficient measurement of river surface velocity. However, a crucial prerequisite for utilizing LSPIV involves camera calibration. Conventiona...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ayman Wagdy, Veronica Garcia-Hansen, Gillian Isoardi and Kieu Pham
High Dynamic Range (HDR) imaging using a fisheye lens has provided new opportunities to evaluate the luminous environment in visual comfort research. For glare analysis, strict calibration is necessary to extract accurate luminous maps to achieve reliabl...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jonas Gliß, Kerstin Stebel, Arve Kylling, Anna Solvejg Dinger, Holger Sihler and Aasmund Sudbø
Ultraviolet (UV) SO2 cameras have become a common tool to measure and monitor SO2 emission rates, mostly from volcanoes but also from anthropogenic sources (e.g., power plants or ships). Over the past decade, the analysis of UV SO2 camera data has seen m...
ver más
|
|
|
|
|
|