An original active contour algorithm applied to snow avalanches

Latombe, Bertrand; Ladret, Patricia; Granada, F.; Villemain, P.

doi:10.1049/cp:19970925

Cited by 2 publications

(2 citation statements)

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“…Automatic acoustic detection [18]; Automatic digital photography [19,20]; Automatic Weather Stations [21]; Avalanche dynamics models [22]; Decision trees and knowledge-based models [23]; Digital image [20,24,25]; Digital scanner [26,27]; Electronic sensors [28][29][30][31][32][33]; ELF Extreme Low Frequency detection [34]; Extended Kalman Filter, 1 [33, 35, 36,]; FMCW Radars High Frequency Microwave [37][38][39]; Gaussian sums Filter SOGS [35,36]; Geographic Information Systems [40][41][42][43][44][45][46]; GPS Global Position System [47][48][49][50][51][52]; High speed video [53]; Images MODIS Moderate Resolution Spectroradiometer [21]; Images X and Ku band satellite [54]; Impact pressure sensors [55,28]; Indices; Infrasound [56][57][58]; Inverse analysis techniques, …”

Section: Technologiesmentioning

confidence: 99%

The Production of Patents and Evolution of the Production of Knowledge around Snow Avalanches

Lopez-Cobo¹

2015

JEASE

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Scientific research on snow avalanches is relatively modern, yet in constant and rapid evolution, as the multiple disciplines involved in its development will, in turn, become more specialized and more technical. Patents are part of research and knowledge production. The scientific community and policy makers are increasingly interested in production of knowledge collaboratively. Almost all of the research being conducted on snow avalanches uses technology, technique or instrumentation. One main objective of this study is to draw from the literature the many technologies, techniques and instrumentations that are being used in research related to avalanches. Thus, a textual analysis of the most significant literature in the field of snow avalanches was done. In this analysis, techniques, technologies and instrumentations have emerged. A patent search has been done in databases. Subsequently, patents were conceptualized. The proportion of applicants for patents is higher in industry than in universities. The measure of exploration of the ongoing sociocognitive transformations of science and technology systems presents a useful tool to conduct a study to explore these transformations. It would be interesting for the scientific community, but also for the industry, to elaborate concept mapping when applied to avalanche research, which would help in determining referents.

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Section: Technologiesmentioning

confidence: 99%

The Production of Patents and Evolution of the Production of Knowledge around Snow Avalanches

Lopez-Cobo¹

2015

JEASE

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“…After digitizing the image, preprocessing to correct the apparent motion was carried out. Next, a simple and original tracking algorithm, which uses an extraction contour algorithm (Latombe and others, 1997) to segment the “Raspes Roies” avalanche, was applied.…”

Section: Image Processingmentioning

confidence: 99%

Study of avalanche dynamics by seismic methods, image-processing techniques and numerical models

Sabot

Naaim²,

Granada

et al. 1998

Ann. Glaciol.

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ABSTRACT. Seismi c sig na ls of ava la nches, rela ted vid eo im ages a nd num e ri ca l m odels were compa red to improve th e cha racteri zati on o f avala nche phenomena. Se ismic d ata and video im ages from two a rtificially released avalanches were a na lysed to obtain more inform ati on abo ut the origin of the sig na ls. Im age p rocessing was used to compare the evolution of one avala nche front a nd the co rres ponding seismic signa ls. A numerica l model was a lso used to simul ate a n avalanche Oow in order to obtain mean-a nd maximum-velocity p rofil es. Pri or to this, the sim ul a ted avala nche was verifi ed using vid eo im ages. The res ul ts indicate th at the seismic signals recorded correspond to cha nges in avala nche type a nd path slope, interacti on with obstacles a nd to phenomena associated with the stopping stage of the avalanche, suggesting that onl y p a rt of the ava lanche was r ecorded. These results account for the seismic signa ls p reviously obtained a uto maticall y in a wide avalanche a rea.

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An original active contour algorithm applied to snow avalanches

Cited by 2 publications

References 0 publications

The Production of Patents and Evolution of the Production of Knowledge around Snow Avalanches

The Production of Patents and Evolution of the Production of Knowledge around Snow Avalanches

Study of avalanche dynamics by seismic methods, image-processing techniques and numerical models

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