Results 21 to 30 of about 7,481 (164)
Optics Express, 2014 A multispectral imaging technique with a new CMOS camera is proposed. With a four channel Bayer patterns, the camera can acquire four spectral images simultaneously. We have developed a color correction process to obtain accurate color information, and we have also demonstrated its applications on portrait enhancement, shadow removal, and vein ...
Zhenyue, Chen +2 more
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Efficient Multispectral Facial Capture With Monochrome Cameras [PDF]
Color and Imaging Conference, 2018 We propose a variant to polarized gradient illumination facial scanning which uses monochrome instead of color cameras to achieve more efficient and higher-resolution results. In typical polarized gradient facial scanning, sub-millimeter geometric detail is acquired by photographing the subject in eight or more polarized spherical gradient lighting ...
Chloe LeGendre +5 more
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Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesWe present THEIA, a novel underwater 3D multispectral imaging system. THEIA integrates a 4MP multispectral field array camera and a high-resolution RGB stereo camera pair in a specially built underwater housing to simultaneously capture spectral and ...
S. Spanos +6 more
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Theoretical and Applied Mechanics Letters, 2022 The hot-section parts easily occur the creep-fatigued interaction under the condition of mechanical-thermal coupled load during the period of service, which may lead to the damage of the parts, and therefore, the measurement and characterization of ...
Wenxiong Shi +6 more
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Geometric Multispectral Camera Calibration [PDF]
, 2009 A large number of multispectral cameras uses optical bandpass filters to divide the electromagnetic spectrum into passbands. If the filters are placed between the sensor and the lens, the different thicknesses, refraction indices and tilt angles of the filters cause image distortions, which are different for each spectral passband.
Johannes Brauers, Til Aach
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Compact multispectral pushframe camera for nanosatellites [PDF]
Applied Optics, 2020 In this paper we present an evolution of the single-pixel camera architecture, called “pushframe,” which addresses the limitations of pushbroom cameras in space-based applications. In particular, it is well-suited to observing fast-moving scenes while retaining high spatial resolution and sensitivity.
Yoann Noblet +7 more
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Camera response function assessment in multispectral HDR imaging
Electronic Imaging, 2022 Recently, spatially varying Bidirectional Reflectance Distribution Functions (svBRDF) is widely used as a model to characterize the appearance of materials with varying visual properties over the surface. One of the challenges in image-based svBRDF capture systems rises for surfaces with high specularity and sparkles, which require a dynamic range ...
Ansari-Asl, Majid +2 more
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INTEGRATION OF A LOW-COST MULTISENSORY UAV SYSTEM FOR FOREST APPLICATION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 To integrate the multi-spectral imagery and laser scanning data for forest management, a low-cost multisensory UAV system, named Kylin Cloud, is introduced in this paper.
J. Li, B. Yang, Y. Cong, S. Li, Y. Yue
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The Geometric Calibration and Validation for The ZY3-02 Satellite Optical Image [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Chinese ZY3-02 satellite, which is the second of ZY3 series satellites, was launched in May 30th 2016 for complementing the mapping and earth observation.
X. Tang, X. Zhu, X. Zhu
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智慧农业, 2021 The digital elevation model (DEM) of maize population in field was constructed by using optical imaging equipment mounted on unmanned aerial vehicle (UAV) to study the accuracy difference of maize population height monitoring at different growth stages ...
YANG Jin +8 more
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