Results 21 to 30 of about 1,089,333 (288)
Geometric calibration of distributed microphone arrays [PDF]
2009 IEEE International Workshop on Multimedia Signal Processing, 2009 Computational auditory scene analysis exploits signals acquired by means of microphone arrays. In some circumstances, more than one array is deployed in the same environment. In order to effectively fuse the information gathered by each array, the relative location and pose of the arrays needs to be obtained solving a problem of geometric inter-array ...
REDONDI, ALESSANDRO ENRICO CESARE +3 more
openaire +2 more sources
Automatic planning for machine tool calibration: A case study [PDF]
, 2012 Machine tool owners require knowledge of their machine’s capabilities, and the emphasis increases with areas of high accuracy manufacturing. An aspect of a machine’s capability is its geometric accuracy. International Standards and best-practice guides
P. Gregory +13 more
core +1 more source
Calibration of geometric distortion in the ACS detectors [PDF]
SPIE Proceedings, 2003 The off-axis location of the Advanced Camera for Surveys (ACS) is the chief (but not sole) cause of strong geometric distortion in all detectors: the Wide Field Camera (WFC), High Resolution Camera (HRC), and Solar Blind Camera (SBC). Dithered observations of rich star cluster fields are used to calibrate the distortion.
Meurer, G. R. +11 more
openaire +2 more sources
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
openaire +1 more source
Efficient generic calibration method for general cameras with single centre of projection [PDF]
, 2007 Generic camera calibration is a non-parametric calibration technique that is applicable to any type of vision sensor. However, the standard generic calibration method was developed with the goal of generality and it is therefore sub-optimal for the ...
John Mallon +5 more
core +2 more sources
Improvement of Gaofen-3 Absolute Positioning Accuracy Based on Cross-Calibration
Sensors, 2017 The Chinese Gaofen-3 (GF-3) mission was launched in August 2016, equipped with a full polarimetric synthetic aperture radar (SAR) sensor in the C-band, with a resolution of up to 1 m.
Mingjun Deng +4 more
doaj +1 more source
INDEPENDENT ON-ORBIT GEOMETRIC CALIBRATION OF OPTICAL SATELLITE BASED ON WEIGHTED VIRTUAL OBSERVATION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 On-orbit geometric calibration is an essential technology to improve the initial geometric accuracy of the optical satellite images. The presented methods usually take the absolute constraint from calibration site data into the imaging model to deduce ...
B. Yang, Y. Pi
doaj +1 more source
Laboratory Calibration of an Ultraviolet–Visible Imaging Spectropolarimeter
Remote Sensing, 2022 The ultraviolet–visible imaging spectropolarimeter (UVISP), developed by the Anhui Institute of Optics and Fine Mechanics (AIOFM), Chinese Academy of Science (CAS), is a dual-beam snapshot instrument for measuring the spectral, radiometric, and linear ...
Jingjing Shi +6 more
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LOW FREQUENCY ERROR ANALYSIS AND CALIBRATION FOR HIGH-RESOLUTION OPTICAL SATELLITE’S UNCONTROLLED GEOMETRIC POSITIONING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 The low frequency error is a key factor which has affected uncontrolled geometry processing accuracy of the high-resolution optical image. To guarantee the geometric quality of imagery, this paper presents an on-orbit calibration method for the low ...
M. Wang, C. Fang, B. Yang, Y. Cheng
doaj +1 more source
SENSOR CALIBRATION OF THREE-LINE CCD SCANNERS ON ZY-3 [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 ZY-3 is the first Chinese civilian high-resolution stereo mapping satellite. ZY-3 is equipped with three-line scanners (nadir, backward and forward views with 2.5 m and 4.0 m resolutions, respectively) and an additional multispectral scanner.
S. Fang, Y. Chen
doaj +1 more source