Results 271 to 280 of about 1,316,422 (315)

Multispectral video camera optical system

Journal of Optical Technology
V. Batshev, A. V. Krioukov, A. S. Machikhin, A. Zolotukhina   +3 more
semanticscholar   +2 more sources

Multispectral EO LOROP camera

SPIE Proceedings, 1998
Results of an investigation into the concept of a multi- spectral (Vis/MWIR) electro-optical long-range oblique-looking digital camera are presented. Choice of the medium-wave band for the IR channel is discussed. An advanced EO camera would take advantage of available multi-element two-dimensional focal-plane-array sensors. Such detectors being of the
Jens-Rainer Hoefft, Traugott Tietz
openaire   +1 more source

Generic MSFA mosaicking and demosaicking for multispectral cameras

SPIE Proceedings, 2006
In this paper, we investigate the potential application of the multispectral filter array (MSFA) techniques in multispectral imaging for reasons like low cost, exact registration, and strong robustness. In both human and many animal visual systems, different types of photoreceptors are organized into mosaic patterns.
Lidan Miao, Hairong Qi 0001, Rajeev Ramanath   +2 more
openaire   +2 more sources

Design of a multispectral plenoptic camera and its application for pyrometry

Applied Optics, 2022
A multispectral imaging system, based on a modified plenoptic camera, is presented. By adding a color filter in the aperture plane of the imaging system, it is possible to simultaneously image multiple discrete colors of light—seven in this design. To develop a measurement system that does not rely onin situcalibrations, each of the optical elements ...
Timothy W. Fahringer, Paul M. Danehy, William D. Hutchins, Brian S. Thurow   +3 more
openaire   +2 more sources

Autofocus for multispectral camera using focus symmetry

Applied Optics, 2012
A multispectral camera acquires spectral color images with high fidelity by splitting the light spectrum into more than three bands. Because of the shift of focal length with wavelength, the focus of each channel should be mechanically adjusted in order to obtain sharp images. Because progressive adjustment is quite time consuming, the clear focus must
Shen, HL, Zheng, ZH, Wang, W, Du, X, Shao, S, Xin, JH   +5 more
openaire   +3 more sources

Camera system for multispectral imaging of documents

SPIE Proceedings, 2009
A spectral imaging system comprising a 39-Mpixel monochrome camera, LED-based narrowband illumination, and acquisition/control software has been designed for investigations of cultural heritage objects. Notable attributes of this system, referred to as EurekaVision, include: streamlined workflow, flexibility, provision of well-structured data and ...
William A. Christens-Barry, Kenneth Boydston, Fenella G. France, Keith T. Knox, Roger L. Easton, Jr., Michael B. Toth   +5 more
openaire   +1 more source

Compact CMOS multispectral/polarimetric camera

SPIE Proceedings, 2006
A novel, compact visible multispectral, polarimetric camera is under development. The prototype is capable of megapixel imaging with sixteen wavebands and three polarimetric images. The entire system encompasses a volume less than 125mm x 100mm x 75mm.
Brian Catanzaro, Jim Lorenz, Mark Dombrowski   +2 more
openaire   +1 more source

The optical design of multispectral camera

SPIE Proceedings, 2013
According to the technical requirements of multi-spectral camera, using telecentric of TMA system, to meet the low distortion request of surveying and mapping. Considering factors, such as processing, assembly and adjustment, spherical surface shape is designed for the second mirror to ensure the fabrication reliability. The image quality is excellent,
openaire   +1 more source

Gain control strategy for multispectral camera

SPIE Proceedings, 2011
Multispectral camera is the principal payload in China's first hazards mitigation satellite, which is designed for hazards monitoring, assessment, and management. However, the camera's dynamic range of scenery is not as wide as expected and partly influences imaging quality on-orbit.
Dianzhong Wang, Yiyun Man, Xinhua Shi
openaire   +1 more source

Estimating the nitrogen nutrition index in grass seed crops using a UAV-mounted multispectral camera

International Journal of Remote Sensing, 2019
The application of adequate nitrogen (N) fertilizers to grass seed crops is important to achieve high seed yield. Application of N will inevitably result in over-fertilization on some fields and, concomitantly, an increased risk of adverse environmental ...
Hui Wang, A. Mortensen, Pei-Sheng Mao, B. Boelt, R. Gislum   +4 more
semanticscholar   +1 more source