Open Access



算法: 基于三维霍夫变换的环形光场三维重建算法
输入: 环形光场高维图像体V(x, y, θ)
输出: 三维点云P(X, Y, Z)
1: E(x, y, θ)=3DCannyDetector(V)
2: =3DStructureTensor(V), 根据(6)式计算β(x, y, θ)
3: for i=1 to |E(xi, yi, θi)| do
4: for Rj=1 to RA=Nx/2
5:   根据公式(6)和(3), 求得2个解φ+, φ-
6:   根据公式(7)和(4), 确定φj, Yj
7:   H(Rj, φj, Yj)++
8: end for
9: end for
10: 标准化三维霍夫空间H=H×W
11: 参数队列: T(R, φ, Y)=Ostu(H)
12: for θ=2π/N to 2π step 2π/N
13: 根据环形光场遮挡原则[11], 生成各个视角下d(θ), 并生成Pθ(X, Y, Z)14: 根据(1)式, 合成Pθ(X, Y, Z)→P(X, Y, Z)
15: end for

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