本视频教程是由Gnomon机构出品的Maya卫星数据创建地形视频教程第二季，The Gnomon Workshop Creating Terrains with Satellite Data Volume 2，时长：5小时57分，大小：5.25 GB，MP4高清视频格式，教程使用软件：Maya, ZBrush, Photoshop, Mari，作者：Alex Alvarez，共19个章节，语言：英语。
Autodesk Maya是美国Autodesk公司出品的世界顶级的三维动画软件，应用对象是专业的影视广告，角色动画，电影特技等。Maya功能完善，工作灵活，易学易用，制作效率极高，渲染真实感极强，是电影级别的高端制作软件。Maya声名显赫，是制作者梦寐以求的制作工具，掌握了Maya，会极大的提高制作效率和品质，调节出仿真的角色动画，渲染出电影一般的真实效果，向世界顶级动画师迈进。Maya 集成了Alias、Wavefront 最先进的动画及数字效果技术。它不仅包括一般三维和视觉效果制作的功能，而且还与最先进的建模、数字化布料模拟、毛发渲染、运动匹配技术相结合。Maya 可在Windows NT与 SGI IRIX 操作系统上运行。在目前市场上用来进行数字和三维制作的工具中，Maya 是首选解决方案。
Maya参与制作的电影有：法国国宝级艺术家Jean Giraud，他原创的影片有《第五元素》、《异形》、《星战》等，并参与制作了《沙丘魔堡》、《深渊》等经典科幻电影；导演Glenn Chaika，著名动画片导演，曾在迪斯尼担任《小美人鱼》的动画师，并执导《拇指仙童历险记》、《花木兰II》等影片；模型监制Wayne Kennedy是曾参与过《隐形人》、《星球大战》、《龙卷风》、《黑衣人》、《木乃伊》的模型师；动画监制Bob Koch和Kelvin Lee是担任《 玩具总动员》、《精灵鼠小弟》等影片的资深动画师；特效指导Manny Wong曾担任《后天》的特效总监，并参与制作了《狂莽之灾I》、《星河战舰》、《巨蟒》、《魔女游戏》等影片。
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The Gnomon Workshop Creating Terrains with Satellite Data Volume 2
In this second DVD of a two-part series, Alex Alvarez continues his demonstration of utilizing satellite data to develop terrains. Where Volume One developed the skills necessary for high-altitude cameras, Volume Two focuses on techniques that allow the artist to effectively ‘up-rez’ regions of the terrain. Adding ZBrush to the workflow, Alex identifies areas that would benefit from digital sculpting. New geometry is created from the initial satellite DEM file (Digital Elevation Model) that is topologized, UV’d, then sculpted using ZBrush’s HD Geometry. The procedural rock textures generated in Volume One are now used as ZBrush Alphas to quickly sculpt rock and cliff details. In addition to HD ZBrush workflows, Alex also shows an alternate approach that allows us to utilize DEMs directly in ZBrush, as well as how to use Decimation Master and XNormal to generate high-quality results. Once the ZBrush phase is complete, new satellite photos are then acquired using Google Earth Pro to generate 8k and 16k textures. Alex demonstrates how to align and project these new textures onto the new terrain geometry in Maya as well as how to cleanup textures using Mari, which supports 16k texture workflows, in a manner suitable for artists with no Mari experience. With models and textures complete, Alex shares his alternate lighting strategies. While Physical Sun/Sky offers convenience, an HDR workflow, combined with direct lighting, offers far more creative control. Alex then moves on to his techniques for creating Atmospheric effects, such as air and fog. Volume Primitives are thoroughly explained including how to texture their density for patchy fog effects. Lastly, rendering the various passes is discussed and the lecture concludes with a demonstration of how to combine the various passes in Photoshop to tune the final look of the image. For artists interested in creating natural environments with Maya, this DVD provides a variety of powerful techniques to create worlds both real and imagined
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