The 4-source photometric stereo technique for three-dimensional surfaces in the presence of highlights and shadows
The 4-source photometric stereo technique for three-dimensional surfaces in the presence of highlights and shadows
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DOI：
10.1109/tpami.2003.1233898
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发表时间：
2003-10-01
影响因子：
23.6
通讯作者：
Petrou, M
中科院分区：
文献类型：
--
作者：
Barsky, S;Petrou, M
提出了一种在高光和阴影存在的情况下，利用四源彩色光度立体图像分离局部梯度信息和朗伯颜色的算法。我们假设表面反射率可以近似为朗伯分量和镜面分量之和。将传统的光度法推广到彩色图像。使用光谱或方向线索检测输入图像中的阴影和高光，并将其从恢复过程中排除，从而提供更可靠的局部表面参数估计。
We present an algorithm for separating the local gradient information and Lambertian color by using 4-source color photometric stereo in the presence of highlights and shadows. We assume that the surface reflectance can be approximated by the sum of a Lambertian and a specular component. The conventional photometric method is generalized for color images. Shadows and highlights in the input images are detected using either spectral or directional cues and excluded from the recovery process, thus giving more reliable estimates of local surface parameters.