首页> 外文会议>European Conference on Computer Vision(ECCV 2006) pt.1; 20060507-13; Graz(AT) >Variational Shape and Reflectance Estimation Under Changing Light and Viewpoints
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Variational Shape and Reflectance Estimation Under Changing Light and Viewpoints

机译:在变化的光线和视点下的变化形状和反射率估计

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Fitting parameterized 3D shape and general reflectance models to 2D image data is challenging due to the high dimensionality of the problem. The proposed method combines the capabilities of classical and photometric stereo, allowing for accurate reconstruction of both textured and non-textured surfaces. In particular, we present a variational method implemented as a PDE-driven surface evolution interleaved with reflectance estimation. The surface is represented on an adaptive mesh allowing topological change. To provide the input data, we have designed a capture setup that simultaneously acquires both viewpoint and light variation while minimizing self-shadowing. Our capture method is feasible for real-world application as it requires a moderate amount of input data and processing time. In experiments, models of people and everyday objects were captured from a few dozen images taken with a consumer digital camera. The capture process recovers a photo-consistent model of spatially varying Lambertian and specular reflectance and a highly accurate geometry.
机译:由于问题的高维度,将参数化的3D形状和一般反射率模型拟合到2D图像数据具有挑战性。所提出的方法结合了经典和光度立体的功能,可以对纹理化和非纹理化表面进行准确的重建。特别是,我们提出了一种变体方法,实现为与反射率估计交错的PDE驱动的表面演化。该表面表示在允许进行拓扑更改的自适应网格上。为了提供输入数据,我们设计了一种捕获设置,可以同时获取视点和光线变化,同时最大程度地减少自阴影。我们的捕获方法对于实际应用是可行的,因为它需要适量的输入数据和处理时间。在实验中,从用消费类数码相机拍摄的几十个图像中捕获了人和日常物体的模型。捕获过程恢复了空间变化的朗伯反射和镜面反射以及高度精确的几何形状的光一致性模型。

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