Open Access
表1
算法流程
| 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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