Dec 23 2009 MEX-VMC Composite of Valles Marineris and Argyre Planitia ---- Composite image of MEX-VMC images taken on December 23, 2009. ---- The raw images were then converted to rgb.png files using Gordan Ugarkovic's VMC2RGB utility with flatfield correction. MEX-VMC Images No 11, 15, 19, and 24 were coordinated to Image No 19. The set was converted to 16-bit, then increased in size 5x. All the images werecontrast-adjusted to image no 24. Layer masks were used to blend the mosaic. The final image is a HiPassLRGB composite. ---- To make the RGB Color layer, a Hue/Saturation level was added (+40) and a Channel Mix layer was added (R: +170%Red, -50%Green, -20%Blue; G: -20%Red, +140%Green, -20%Blue; B: -50%Red, -20%Green, +170% Blue). The color image was Gaussian Blurred 1.5 pixels. ---- To make the luminance (L) layer, the unblurred color layer was converted using a B&W conversion layer with R:+60%,Y:+70%,G:+70%, C:+20%, B: +50%, M: +50%). The luminance layer was combined in the stack with the Luminance blending mode. Above this was placed another B&W converted layer, this time with a 30 pixel HiPass filter that was blended with the other layers in the stack. A final Curves layer were added to make the final composite. ---- The combined image was then downsampled to 100% and rotated so that north is at top. ---- In the image, Valles Marineris and Eos Chaos can be seen at top center. At the extreme south of the composite, the bright Argyre Planitia can be seen. ---- Image credits: ESA / Mike Malaska ---- Original via: http://www.flickr.com/photos/31678681@N07/4230483496/