Enhancement of satellite image data by data cumulation

Albertz, Jörg; Zelianeos, Konstantinos

doi:10.1016/0924-2716(90)90056-h

Cited by 15 publications

(7 citation statements)

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“…The relation between tie-point coordinates and the corresponding surface point is mathematically defined through so-called collinearity equations (Albertz & Wiggenhagen 2009) via the orientation and camera calibration data (Sect. 3.2).…”

Section: Stereo-photogrammetric Bundle Block Adjustmentmentioning

confidence: 99%

Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko – Stereo-photogrammetric analysis of Rosetta/OSIRIS image data

Preusker

Scholten

Matz

et al. 2015

A&A

204

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We analyzed more than 200 OSIRIS NAC images with a pixel scale of 0.9−2.4 m/pixel of comet 67P/Churyumov-Gerasimenko (67P) that have been acquired from onboard the Rosetta spacecraft in August and September 2014 using stereo-photogrammetric methods (SPG). We derived improved spacecraft position and pointing data for the OSIRIS images and a high-resolution shape model that consists of about 16 million facets (2 m horizontal sampling) and a typical vertical accuracy at the decimeter scale. From this model, we derive a volume for the northern hemisphere of 9.35 km 3 ± 0.1 km 3 . With the assumption of a homogeneous density distribution and taking into account the current uncertainty of the position of the comet's center-of-mass, we extrapolated this value to an overall volume of 18.7 km 3 ± 1.2 km 3 , and, with a current best estimate of 1.0 × 10 13 kg for the mass, we derive a bulk density of 535 kg/m 3 ± 35 kg/m 3 . Furthermore, we used SPG methods to analyze the rotational elements of 67P. The rotational period for August and September 2014 was determined to be 12.4041 ± 0.0004 h. For the orientation of the rotational axis (z-axis of the body-fixed reference frame) we derived a precession model with a half-cone angle of 0.14 • , a cone center position at 69.54• /64.11• (RA/Dec J2000 equatorial coordinates), and a precession period of 10.7 days. For the definition of zero longitude (x-axis orientation), we finally selected the boulder-like Cheops feature on the big lobe of 67P and fixed its spherical coordinates to 142.35• right-hand-rule eastern longitude and -0.28• latitude. This completes the definition of the new Cheops reference frame for 67P. Finally, we defined cartographic mapping standards for common use and combined analyses of scientific results that have been obtained not only within the OSIRIS team, but also within other groups of the Rosetta mission.

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Section: Stereo-photogrammetric Bundle Block Adjustmentmentioning

confidence: 99%

Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko – Stereo-photogrammetric analysis of Rosetta/OSIRIS image data

Preusker

Scholten

Matz

et al. 2015

A&A

204

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“…Figure 2 is an enhanced-resolution composite of 6 AVHRR scenes of the Siple Dome area. This image has been enhanced by combining 6 scenes acquired by the NOAA-10, -11, and -12 satellites on December 3 and December 8, 1992 using a data cumulation technique (Albertz and Zelianeos, 1988). The scenes were roughly georegistered, and then coregistered to within ~0.25 pixel size.…”

Section: Surface Morphologymentioning

confidence: 99%

Changes in the configuration of ice stream flow from the West Antarctic Ice Sheet

Jacobel¹,

Scambos²,

Raymond³

et al. 1996

J. Geophys. Res.

125

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Surface‐based ice‐penetrating radar profiles on the northeast flank of Siple Dome support the hypothesis that a curvilinear scar first observed in advanced very high resolution radiometer satellite imagery represents the margin of a formerly active ice stream. The scar defines the southwestern boundary of an ice stream flowing from ice stream C to ice stream D, close to where it enters the Ross Ice Shelf. Our studies show that the scar coincides with a trough and upward step in surface topography approximately 5 km across, underlain by a zone of disturbed internal stratigraphy revealed by the radar. Burial depth of the disturbed zone enables us to calculate the time of shutdown as occurring prior to approximately 1.3 ka. The configuration of the ice streams draining the West Antarctic Ice Sheet into the Ross Ice Shelf evidently changes with time, and attempts to predict the evolution of the ice sheet must incorporate this observation.

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“…In recent years, some researchers proposed some views of the enhancement method for satellite cloud images. For instance, Albertz and Zelianeos [1] developed an approach that merges the data from several images of the same area and the same time in order to improve the image resolution. In [2], satellite image enhancement and smoothing towards automatic feature extraction is accomplished through an effective serial application of anisotropic diffusion processing and alternating sequential filtering.…”

Section: Introductionmentioning

confidence: 99%

A novel nonlinear algorithm for typhoon cloud image enhancement

Zhang

Yang

2011

Int. J. Autom. Comput.

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A novel nonlinear gray transform method is proposed to enhance the contrast of a typhoon cloud image. Generally, the typhoon cloud image obtained by a satellite cannot be directly used to make an accurate prediction of the typhoon s center or intensity because the contrast of the received typhoon cloud image may be bad. Our aim is to extrude the typhoon s eye in the typhoon cloud image. A normalized arc-tangent transformation operation is designed to enhance global contrast of the typhoon cloud image. Differential evolution algorithm is used to choose the optimal nonlinear transform parameter. Finally, geodesic activity contour model is used to extract the typhoon s eye to verify the performance of the proposed method. Experimental results show that the proposed method can efficiently enhance the global contrast of the typhoon cloud image while greatly extruding the typhoon s eye.

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Enhancement of satellite image data by data cumulation

Cited by 15 publications

References 0 publications

Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko – Stereo-photogrammetric analysis of Rosetta/OSIRIS image data

Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko – Stereo-photogrammetric analysis of Rosetta/OSIRIS image data

Changes in the configuration of ice stream flow from the West Antarctic Ice Sheet

A novel nonlinear algorithm for typhoon cloud image enhancement

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