Results 221 to 230 of about 7,714 (260)

Visual feature extraction for lunar surface images

2012 5th International Congress on Image and Signal Processing, 2012
Visual feature extraction is foundation of lunar surface topography reconstruction. The paper studies visual feature extraction for lunar surface images, and then offers the visual feature extraction algorithm for lunar surface images. The experimental results show that the algorithm has good adaptability to illumination change, scale change and ...
Guicai Wang, Jianguo Tang, Ying Hou
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Estimation of Local Lunar Gravity Features

Radio Science, 1970
A quantitative estimate of the gravity features on the near surface of the moon has been obtained by iteratively constructing a mass density model to improve the agreement between actual Doppler tracking data from Lunar‐Orbiter spacecraft and theoretical trajectory predictions.
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Volcanic features of the nearside equatorial lunar maria

Journal of the Geological Society, 1976
A map is presented of the distribution of volcanic features in the lunar maria between longitudes 50°E. and 100°W, and latitudes 50°N. and S. Flood basaltic flows predominate, and where individual flow units can be identified they may be hundreds of kilometres long.
J. E. GUEST, J.B. MURRAY
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Infrared Emission Spectra: Enhancement of Diagnostic Features by the Lunar Environment

Science, 1970
Information diagnostic of general rock type is available as a well-defined emission maximum (related to the Christiansen frequency), rather than as contrast-depleted minima, in the infrared spectra of particulate solids. The amount of spectral information varies directly with the sharpness of the thermal gradient at the sample surface.
L M, Logan, G R, Hunt
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Evidence for lunar volcano-tectonic features

Journal of Geophysical Research, 1971
Lunar volcano-tectonic processes, considering primary circular or polygonal surface features ...
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Lunar Impact Features and Processes

Reviews in Mineralogy and Geochemistry, 2023
Osinski, Gordon R., Melosh, H. Jay, Andrews-Hanna, Jeff, Baker, David, Denevi, Brett, Dhingra, Deepak, Ghent, Rebecca, Hayne, Paul O., Hill, Patrick, James, Peter B., Jaret, Steven, Johnson, Brandon, Kenkmann, Thomas, Kring, David A., Mahanti, Prasun, Minton, David, Neish, Catherine D., Neumann, Greg, Plescia, Jeff, Potter, Ross W. K., Richardson, Jim, Silber, Elizabeth A., Soderblom, Jason M., Zanetti, Michael, Zellner, Nicolle   +24 more
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Large-Scale Features of the Lunar Surface

1969
In the preceding chapter our aim has been to reconstruct an average microstructure of the lunar surface from evidence obtained through diverse channels of information. In what follows, we wish to conclude this discussion — and this entire volume — by a few retrospective considerations concerning the structure of the lunar surface on a larger scale.
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Albedo of Lunar Features

2022
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Taking a Measure of Lunar Features, Brightness, and Temperature

2020
And as the tops of these mountains are considerably elevated above the other parts of the surface, they are oft en illuminated when they are at a considerable distance from the line which separates the enlightened from the unenlightened part of the disc, and by this means aff ord us a method of even determining their height.
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Characterization of geomorphological features of lunar surface using Chandrayaan-1 Mini-SAR and LRO Mini-RF data

Quaternary International, 2021
Shashi Kumar
exaly