Automatic co-registration of space-based sensors for precision change detection and analysis

Bryant, N. A.; Zobrist, A. L.; Logan, T. L.

doi:10.1109/igarss.2003.1294112

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…1). Hence, for all columns c and for all rows r in the raw image, the look directions u 1 are given by u 1 (c, r) = u 1 (c, r) u 1 (c, r) 2 , for all c, r = 1, . .…”

Section: ) Navigation Reference Coordinate System and Look Directionsmentioning

confidence: 99%

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Automatic and Precise Orthorectification, Coregistration, and Subpixel Correlation of Satellite Images, Application to Ground Deformation Measurements

Leprince

Barbot

Ayoub

et al. 2007

IEEE Trans. Geosci. Remote Sensing

822

735

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Abstract-We describe a procedure to accurately measure ground deformations from optical satellite images. Precise orthorectification is obtained owing to an optimized model of the imaging system, where look directions are linearly corrected to compensate for attitude drifts, and sensor orientation uncertainties are accounted for. We introduce a new computation of the inverse projection matrices for which a rigorous resampling is proposed. The irregular resampling problem is explicitly addressed to avoid introducing aliasing in the ortho-rectified images. Image registration and correlation is achieved with a new iterative unbiased processor that estimates the phase plane in the Fourier domain for subpixel shift detection. Without using supplementary data, raw images are wrapped onto the digital elevation model and coregistered with a 1/50 pixel accuracy. The procedure applies to images from any pushbroom imaging system. We analyze its performance using Satellite pour l'Observation de la Terre (SPOT) images in the case of a null test (no coseismic deformation) and in the case of large coseismic deformations due to the Mw 7.1 Hector Mine, California, earthquake of 1999. The proposed technique would also allow precise coregistration of images for the measurement of surface displacements due to ice-flow or geomorphic processes, or for any other change detection applications. A complete software package, the Coregistration of Optically Sensed Images and Correlation, is available for download from the Caltech Tectonics Observatory website.

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“…1). Hence, for all columns c and for all rows r in the raw image, the look directions u 1 are given by u 1 (c, r) = u 1 (c, r) u 1 (c, r) 2 , for all c, r = 1, . .…”

Section: ) Navigation Reference Coordinate System and Look Directionsmentioning

confidence: 99%

“…Precise images coregistration is a prerequisite in such applications, and this critical step is often a major source of limitation [1], [2]. For instance, a registration accuracy of less than 1/5 of a pixel is required to achieve a change detection error of less than 10% in Landsat Thematic Mapper images [3].…”

mentioning

confidence: 99%

Automatic and Precise Orthorectification, Coregistration, and Subpixel Correlation of Satellite Images, Application to Ground Deformation Measurements

Leprince

Barbot

Ayoub

et al. 2007

IEEE Trans. Geosci. Remote Sensing

822

735

View full text Add to dashboard Cite

show abstract

“…One detailed example of a TIR anomaly prior to a major earthquake is found in the work of Piroddi et al (2010Piroddi et al ( , 2012Piroddi et al ( , 2014. This study concerns the spatial and temporal distribution of TIR anomalies preceding the M=6.3 L'Aquila earthquake of April 06, 2009 in central Italy using the Nighttime Thermal Gradient (NTG) technique of Bryant et al (2002Bryant et al ( , 2003Bryant et al ( , 2004aBryant et al ( , 2004b. The NTG technique is based on the recognition that, under clear skies, the Earth's surface tends to cool during the night.…”

Section: Thermal Infrared (Tir) Anomaliesmentioning

confidence: 99%

Earthquake precursors in the light of peroxy defects theory: Critical review of systematic observations

Freund

Ouillon²,

Scoville

et al. 2021

Eur. Phys. J. Spec. Top.

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Forecasting earthquakes implies that there are time-varying processes, which depend on the changing conditions deep in the Earth's crust prior to major seismic activity. These processes may be linearly or non-linearly correlated. In seismology, the research has traditionally been centered on mechanical variables, including precursory ground deformation (revealing the build-up of stress deep below) and on prior seismic events (past earthquakes may be related to or even trigger future earthquakes). Since the results have been less than convincing, there is a general consensus in the geoscience community that earthquake forecasting on time scales comparable to meteorological forecasts are still quite far in the future, if ever attainable.The starting point of the present review is to acknowledge that there are innumerable reports of other types of precursory phenomena ranging from emission of electromagnetic waves from ultralow frequency (ULF) to visible (VIS) and near-infrared (NIR) light, electric field and magnetic field anomalies of various kinds (see below), all the way to unusual animal behavior, which has been reported again and again. These precursory signals are intermittent and seem not to occur systematically before every major earthquake and reports on pre-earthquake signals are not widely accepted by the geoscience community at large because no one could explain their origins. In addition, the diversity of the signals makes them look disparate and unrelated, hampering any progress.We review a credible, unifying theory for a solid-state mechanism, which is based on decades of research bridging semi-conductor physics, chemistry and rock physics. This theory, which we refer to as the "peroxy defect theory", is capable of providing explanations for the multitude of reported pre-earthquake phenomena. A synthesis has emerged that all pre-earthquake phenomena could trace back to one fundamental physical process: the activation of electronic charges (electrons and positive holes) in rocks subjected to ever-increasing tectonic stresses prior to any major seismic activity, via the rupture of peroxy bonds. The holes are unusual I-Introduction 1.1 The cost of earthquakesLarge earthquakes are, by far, the deadliest of all natural disasters, claiming an average of 60,000 lives a year, featuring gigantic fluctuations (e.g. 80,000 victims from 1994 to 2004, and 780,000 from 2001 to 2010; see e.g. Knopoff and Sornette, 1995, for the size distribution of death tolls related to seismic events), which partly mirrors the highly intermittent distribution of seismicity in space, time, and magnitude. On more economic grounds, such disasters are also causing colossal property and industrial damage, with that of the 1989 Loma Prieta earthquake in California alone estimated at $6 billions (over €4 billions), the 1995 Kobe event in Japan estimated at $200 billions (€150 billions), while the 2011 Tohoku earthquake followed by its great tsunami already stands with much higher losses, with costs continuing to rise with the on-going m...

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“…As reported in [21], the anomaly recognition (dT /dt > 0) could also be done applying less physical (i.e. losing physical units in final indices) and more statistical strategies such as frequency analyses [29][30][31][32], standard deviation normalisation [9,15,33] or other robust techniques [20,34]. Fig.…”

Section: Ntg Theoretical Assumptions: Index Stabilization and Expected Resolution Increasementioning

confidence: 99%

From high temporal resolution to synthetically enhanced radiometric resolution: insights from Night Thermal Gradient results

Piroddi

2021

Eur. Phys. J. Spec. Top.

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Electromagnetic emissions in thermal infrared bands are an important research topic on pre-earthquake studies. Satellite thermal data have been investigated by many independent research groups looking for their anomalous behaviour before main earthquake's occurrences. Among them, geosynchronous satellite data are reported as less prone to artefacts during data processing. In this work, the Night Thermal Gradient (NTG) algorithm is presented, which has been specifically proposed for geostationary thermal infrared data processing. NTG method relies on the exploitation of high temporal resolution data to find coherent low frequency components of a hypothetical precursory signal of seismic activity. In this paper, the method is presented by giving details about the applied procedures, steps, theoretical assumptions and results obtained during the studies of L'Aquila 2009 earthquake and the seismic activity of Central Italy and Sardinia.

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Automatic co-registration of space-based sensors for precision change detection and analysis

Cited by 5 publications

References 5 publications

Automatic and Precise Orthorectification, Coregistration, and Subpixel Correlation of Satellite Images, Application to Ground Deformation Measurements

Automatic and Precise Orthorectification, Coregistration, and Subpixel Correlation of Satellite Images, Application to Ground Deformation Measurements

Earthquake precursors in the light of peroxy defects theory: Critical review of systematic observations

From high temporal resolution to synthetically enhanced radiometric resolution: insights from Night Thermal Gradient results

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