关于现实生活中的单视图 3D 重建有什么想法吗？
因此，一般来说，当我们想到单视图重建时，我们会想到使用平面、简单纹理等……一般来说，是从自然角度来看的简单对象。但是像潮湿的海滩石头这样的东西呢？我想知道是否有任何算法可以帮助从单张石头图片重建 3D？
So in general, when we think of Single View Reconstruction we think of working with planes, simple textures and so on... Generally, simple objects from nature's point of view. But what about such thing as wet beach stones? I wonder if there are any algorithms that could help with reconstructing 3d from single picture of stones?
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阴影形状将是我的第一个攻击角度。
光滑的潮湿岩石（例如第一幅图像中的岩石）可能会表现出可预测的镜面反射特性，允许人们仅根据亮度值和相机与光源（太阳）之间的相对角度来估计表面法线。
如果您能够分割单个岩石（如第二张照片中的岩石），您可能可以通过对场景中所有岩石大小相似且位于所述地平面上进行一些假设来估计地平面的参数。
Shape from shading would be my first angle of attack.
Smooth wet rocks, such as those in the first image, may exhibit predictable specular properties allowing one to estimate the surface normal based only on the brightness value and the relative angle between the camera and the light source (the sun).
If you are able to segment individual rocks, like those in the second photo, you could probably estimate the parameters of the ground plane by making some assumptions about all the rocks in the scene being similar in size and lying on said ground plane.