Results 191 to 200 of about 7,830 (229)
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Automatic exposure control for multispectral cameras
2013 IEEE International Conference on Image Processing, 2013In this paper we present a method to automatically control the exposure of multispectral cameras. To this end, we use an input image taken using camera pre-sets. This pre-set exposure time and the input image are then used to recover an updated exposure time making use of the spectral power.
Ahmed Sohaib +2 more
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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
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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
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RADIOMETRIC CALIBRATION OF A MULTISPECTRAL CAMERA
2006We describe in detail a method for calibrating a multispectral imaging system based on interference filters. The calibration aims to remove systematic noises introduced by the sensor, and optic and/or filters from multispectral images. After which, we can correct the non-linearity of the sensor response.
Alamin Mansouri +3 more
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Development of a multispectral camera system
SPIE Proceedings, 2000A highly accurate multispectral camera and the application software have been developed as a practical system to capture digital images of the artworks stored in galleries and museums. Instead of recording color data in the conventional three RGB primary colors, the newly developed camera and the software carry out a pixel-wise estimation of spectral ...
Hiroaki Sugiura +5 more
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Multispectral and Hyperspectral CAOS camera
Light, Energy and the Environment, 2016Proposed is the multispectral and hyperspectral CAOS camera. This camera simultaneously and independently detects image information for two different spectral bands providing special features such as extremely high dynamic range.
Nabeel A. Riza, J. Pablo La Torre
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Generic MSFA mosaicking and demosaicking for multispectral cameras
SPIE Proceedings, 2006In 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 +2 more
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Autofocus for multispectral camera using focus symmetry
Applied Optics, 2012A 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 +5 more
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Design of a multispectral plenoptic camera and its application for pyrometry
Applied Optics, 2022A 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 +3 more
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The optical design of multispectral camera
SPIE Proceedings, 2013According 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,
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Camera system for multispectral imaging of documents
SPIE Proceedings, 2009A 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 +5 more
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