亚洲公路HDRI贴图合辑 Dosch Design: HDRI – Asia Roads
本合辑是由DOSCH机构出品的HDRI亚洲公路光照贴图合辑，大小：9.64 GB，格式：hdr jpg。
HDRI拥有比普通RGB格式图像（仅8bit的亮度范围）更大的亮度范围。标准的RGB图像实用亮度是值是255/255/255，如果用这样的图像结合光能传递照明一个场景的话，即使是zui*亮的白色也不足以提供足够的照明来模拟真实世界中的情况，渲染结果看上去会平淡而缺乏对比，原因是这种图像文件将现实中的大范围的照明信息仅用一个8bit的RGB图像描述。 但是使用HDRI的话，相当于将太阳光的亮度值（比如6000%）加到光能传递计算以及反射的渲染中，得到的渲染结果也是人人素材非常真实和漂亮的。下面的两张渲染的图片可以看出使用HDRI后带来的巨大差异。
Dosch HDRI: Asia Roads contains HDRIs incl. corresponding backplate sets for 15 coastal scenery locations.
Through combination of the background image of each location’s surroundings, and the HDRI-capture of that location, the object that is to be depicted at that exact location will be illuminated highly realistically. Thanks to HDR-technology visualizations will therefore offer almost unlimited lighting and mood options.
The backplates are provided in a resolution of 7216 x 5412 pixel – and the highest resolution of the Spherical Map HDRIs is 13000 x 6500 pixel.
Radiosity – and therefore the use of HDRIs is directly supported in many 3D-applications like Lightwave (version 6.0 and higher), Softimage|XSI, Maya & Mentalray, Pixar RenderMan, Bryce 6, Autodesk VIZ, messiah:render (Arnold), InSight (Integra), 3ds-max & vray, 3ds-max & Brazil r/s (Splutterfish), 3ds-max & finalRender (Cebas), Cinema4D Version 8.1 and more. For further HDRI-rendering tools options the documentation of the used 3D-program should be consulted.
And each HDR image is provided in the industry standard .HDR. So they are useable in most rendering applications.
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