{"id":297,"date":"2013-01-03T05:33:00","date_gmt":"2013-01-03T05:33:00","guid":{"rendered":"http:\/\/factualfiction.com\/marsartists\/2013\/01\/03\/mother-mars-a-living-mars-a-visualization-of-mars-very-much-alive-thanks-to-kevin-gill\/"},"modified":"2016-11-01T19:18:30","modified_gmt":"2016-11-01T19:18:30","slug":"mother-mars-a-living-mars-a-visualization-of-mars-very-much-alive-thanks-to-kevin-gill","status":"publish","type":"post","link":"https:\/\/factualfiction.com\/marsartists\/2013\/01\/03\/mother-mars-a-living-mars-a-visualization-of-mars-very-much-alive-thanks-to-kevin-gill\/","title":{"rendered":"Mother Mars! "A Living Mars: A Visualization of Mars, Very Much Alive" Thanks to Kevin Gill"},"content":{"rendered":"
<\/a><\/div>\n
<\/a><\/div>\n
“A visualization of an Earth-like Mars, be it ancient or a future of terraforming. This was
\nproduced by rendering a flat model image using the MRO MOLA 128 pix\/deg elevation dataset
\nin\u00a0jDem846<\/a>\u00a0then layering imagery from\u00a0Blue Marble<\/a>\u00a0in\u00a0GIMP<\/a>. The layer was then brought back
\ninto jDem to produce the final spherical projection and scripted to add the atmosphere and
\nclouds from the\u00a0NASA Visible Earth catalog<\/a>. Eye position is about 6,600 kilometers (4100 miles)
\nfrom the surface of the planet and looking at the southern hemisphere (~20\u00b0 South) and the
\n180th meridian.”<\/div>\n
<\/div>\n
\n

Thanks Kevin Gill!!<\/p>\n

https:\/\/plus.google.com\/u\/0\/113761354606401247247\/posts<\/a><\/p>\n<\/div>\n

\n

http:\/\/www.flickr.com\/photos\/kevinmgill\/8165909516\/<\/a><\/p>\n

Screenshot of jDem846<\/p>\n

<\/a><\/div>\n
<\/div>\n
“The height of the clouds and atmosphere are largely arbitrary and set for the sake of
\nappearance. The terrain is also exaggerated by about 10 times. The orbital \u201ceye\u201d view is about
\n10,000 km (~6,200 miles) from the surface.<\/div>\n
<\/div>\n
A two dimensional digital elevation model was first rendered in jDem846 (an open-source
\nlearning project of mine) using the MRO MOLA 128 pix\/deg elevation dataset. In that model, I
\npicked a sea level and scripted it such that terrain at or below that level was flat and blue.<\/div>\n
The resulting model was then brought into GIMP were I painted in land features using a NASA
\nBlue Marble Next Generation image for the source textures. There is no scientific reasoning
\nbehind how I painted it; I tried to envision how the land would appear given certain features or
\nthe effects of likely atmospheric climate. For example, I didn\u2019t see much green taking hold within
\nthe area of Olympus Mons and the surrounding volcanoes, both due to the volcanic activity and
\nthe proximity to the equator (thus a more tropical climate). For these desert-like areas I mostly
\nused textures taken from the Sahara in Africa and some of Australia. Likewise, as the terrain
\ngets higher or lower in latitude I added darker flora along with tundra and glacial ice. These
\nnorthern and southern areas textures are largely taken from around northern Russia. Tropical
\nand subtropical greens were based on the rainforests of South America and Africa.<\/div>\n
<\/div>\n
Finally, that image was brought back into jDem846 as a layer to be reapplied to the same MOLA
\ndataset, but rendered as a spherical projection (like Google Earth). I scripted the model to apply
\na three-dimensional cloud layer, add an atmosphere, and dampen specular lighting on dry land
\nand under clouds. There are some other scripted tweaks here and there.”<\/div>\n<\/div>\n
http:\/\/code.google.com\/p\/jdem846\/<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

“A visualization of an Earth-like Mars, be it ancient or a future of terraforming. This was produced by rendering a flat model image using the MRO MOLA 128 pix\/deg elevation dataset in\u00a0jDem846\u00a0then layering imagery from\u00a0Blue Marble\u00a0in\u00a0GIMP. The layer was then brought back into jDem to produce the final spherical projection and scripted to add the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,198,100],"tags":[],"class_list":["post-297","post","type-post","status-publish","format-standard","hentry","category-digital-art","category-terraforming","category-tips"],"_links":{"self":[{"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/posts\/297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/comments?post=297"}],"version-history":[{"count":5,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/posts\/297\/revisions"}],"predecessor-version":[{"id":5765,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/posts\/297\/revisions\/5765"}],"wp:attachment":[{"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/media?parent=297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/categories?post=297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/factualfiction.com\/marsartists\/wp-json\/wp\/v2\/tags?post=297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}