Global color variations on the Martian surface

Global Color Variations on Io

“…The resulting mosaics thus approximate the appearance of Io at 4.1 • to 4.9 • phase. The seam-removal technique of Soderblom et al (1978) was applied before the data were finally assembled into a global mosaic.…”

The sedimentology and dynamics of crater-affiliated wind streaks in western Arabia Terra, Mars and Patagonia, Argentina

“…5). Arabia Terra wind streaks extend many tens to a few hundred kilometers southeast or southwest and have been the subject of Mars geologic research since the early 1970s using image data from the Mariner 9 (Sagan et al, 1972(Sagan et al, , 1973Arvidson, 1974), Viking Orbiter, (Soderblom et al, 1978;Thomas and Veverka, 1979;Kieffer et al, 1981;Peterfreund, 1981;Thomas et al, 1981;Thomas et al, 1984;Thomas and Veverka, 1986;Henry and Zimbelman, 1988;Presley and Arvidson, 1988;Arvidson et al, 1989;Strickland, 1989), and Mars Global Surveyor (Mustard, 1997;Cooper and Mustard, 1998;Edgett and Malin, 2000;Pelkey et al, 2001;Wyatt et al, 2001) missions. A few wind streaks similar to those in Arabia Terra occur in neighboring Xanthe Terra; in the opposite hemisphere to Arabia Terra near Marte Vallis, Tartarus Colles, and Gale crater (Thomas et al, 1981;Peterfreund, 1981;Zimbelman, 1986); and in at least one crater in the circum-polar plains of Planum Boreum (Fig.…”

Radiometric framework for image mosaicking

“…(12). Note that each element W͑n , n͒ varies according to the values of the intensities used in the corresponding row n of R. For regularization, we add matrix rows expressing second-order derivatives of g and l. We use the common approximation for the one-dimensional (1D) secondderivative operator:…”

“…Mosaicking has been used extensively in various scientific fields. [7][8][9][11][12][13][14][15][16][17] Typically, a radiometric mismatch exists between the different frames, owing to the above-mentioned problems. This results in seams in the stitched image mosaic.…”

“…This results in seams in the stitched image mosaic. Various methods were developed to feather the seams 12,[18][19][20] or camouflage them 10 in scene edges. However, those pure image-processing methods address the perceptual effects of seams rather than accounting for the root cause of the mismatch.…”