Results 211 to 220 of about 694,763 (254)

Radiometric calibration for HDR imaging

2015 IEEE International Conference on Image Processing (ICIP), 2015
In this paper we present a method to estimate the radiance map and camera response function for high dynamic range (HDR) imaging which is devoid of free parameters and can reliably recover HDR images with as few as two low-dynamic range (LDR) views acquired at different exposures.
Ahmed Sohaib, Antonio Robles-Kelly
openaire   +1 more source

FY-3D HIRAS Radiometric Calibration and Accuracy Assessment

IEEE Transactions on Geoscience and Remote Sensing, 2020
The High-Spectral Infrared Atmospheric Sounder (HIRAS) is a Fourier transform spectrometer onboard the fourth polar-orbiting FengYun 3D satellite (FY-3D).
Chunqiang Wu, Chengli Qi, Xiuqing Hu, Mingjian Gu, Tianhang Yang, Hanlie Xu, Lu Lee, Zhongdong Yang, Peng Zhang   +8 more
semanticscholar   +1 more source

Radiometric Calibration of SDGSAT-1 Nighttime Light Payload

IEEE Transactions on Geoscience and Remote Sensing
Nighttime light plays an important role in social economy and human activities by observing artificial light at night. Accurate radiometric calibration is the basis of quantitative applications and influences the accuracy of surface information revision.
Lin Yan, Yonghong Hu, Changyong Dou, Xiao-Ming Li   +3 more
semanticscholar   +1 more source

Robust Radiometric Calibration and Vignetting Correction

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008
In many computer vision systems, it is assumed that the image brightness of a point directly reflects the scene radiance of the point. However, the assumption does not hold in most cases due to nonlinear camera response function, exposure changes, and vignetting.
Seon Joo Kim, Marc Pollefeys
openaire   +2 more sources

Radiometric calibration of SeaWiFS in the near infrared

Applied Optics, 2005
The radiometric calibration of the Sea-Viewing Wide-Field-of-View Sensor (SeaWiFS) in the near infrared (band 8, centered on 865 nm) is evaluated by use of ground-based radiometer measurements of solar extinction and sky radiance in the Sun's principal plane at two sites, one located 13 km off Venice, Italy, and the other on the west coast of Lanai ...
Martiny, Nadège, Frouin, R., Santer, R.
openaire   +3 more sources

RADIOMETRIC CALIBRATION OF A MULTISPECTRAL CAMERA

2006
We 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, M. Sanchez, Franck Marzani, Pierre Gouton   +3 more
openaire   +1 more source

Radiometric calibration of MERIS

SPIE Proceedings, 2004
Envisat is ESA's environmental research satellite launched on 1 March 2002. It carries a suit of sensors offering opportunities for a broad range of scientific research and applications. The radiometric calibration results from the first 2 years of operation of the MEdium Resolution Imaging Spectrometer (MERIS) will be presented.
Steven Delwart, Ludovic Bourg
openaire   +1 more source

Radiometric Calibration from Faces in Images

2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2017
We present a method for radiometric calibration of cameras from a single image that contains a human face. This technique takes advantage of a low-rank property that exists among certain skin albedo gradients because of the pigments within the skin. This property becomes distorted in images that are captured with a non-linear camera response function ...
Chen Li 0031, Stephen Lin 0001, Kun Zhou 0001, Katsushi Ikeuchi   +3 more
openaire   +1 more source

Status of MODIS instrument and radiometric calibration

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013
Since launch, Terra and Aqua MODIS have successfully operated for more than 13 and 11 years, respectively. MODIS observations, made in 36 spectral bands covering wavelengths from visible to long-wave infrared, have enabled a broad range of science and research activities and made significant contributions to the earth remote sensing applications. MODIS
Xiaoxiong Xiong, Brian Wenny, Amit Angal, Junqiang Sun, Vincent V. Salomonson, William L. Barnes   +5 more
openaire   +1 more source

Precise prelaunch radiometric calibration of VIIRs

SPIE Proceedings, 2015
The paper presents the new approach that includes technique, scheme and instruments for precise calibration of space-borne and airborne visible infrared imaging radiometers (VIIRs). The key component of this technique is the precise uniform light source based on optically-interconnected integrating spheres.
Leonid Mikheenko, Volodymyr Borovytsky, Oleksii Hudz   +2 more
openaire   +1 more source