Single-View Relighting with Normal Map Painting
Single-View Relighting with Normal Map Painting
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发表时间：
2006
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通讯作者：
Makoto Okabe;Gang Zeng;Y. Matsushita;T. Igarashi;Long Quan;H. Shum
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作者：
Makoto Okabe;Gang Zeng;Y. Matsushita;T. Igarashi;Long Quan;H. Shum
本文提出了一种改变真实的照片中物体光照的交互技术。1由于光照效果对表面法线扰动非常敏感，但很难自动分析，因此我们依靠基于笔的界面在照片上快速绘制近似法线贴图。然后，将照片和近似法线图作为一种新算法的输入，该算法细化地图并将反射率分配给每个像素。我们提出了各种场景的重新照明结果，并使用我们的技术来匹配多个照片的照明。
This paper presents an interactive technique for changing the illumination of objects in a real photograph. 1 Because lighting effects are very sensitive to surface normal perturbations but hard to automatically analyze, we rely on a pen-based interface to quickly draw an approximate normal map over a photo. The photo and the approximate normal map are then given as input to a novel algorithm that refines the map and assigns reflectance to every pixel. We present relighting results for a variety of scenes, and use our technique to match the illumination of multiple pho-