Try to use OpenMVS under ubuntu

Run under jupyter-lab

• Open it at ucas

OpenSfM

feature_type

• KAZE[EECV]風
  • github
  • KAZE Features. Pablo F. Alcantarilla, Adrien Bartoli and Andrew J. Davison. In European Conference on Computer Vision (ECCV), Fiorenze, Italy, October 2012. bibtex
  • Perona-Malik方程
  • 非线性尺度空间
• AKAZE[Accelerated-KAZE KAZE的加速版]
• SIFT
  • DoG[Difference of Gaussian]
• SURF[Speeded up robust features]
  • Use Box-Filter[盒子滤波器] instead of DoG
  • Change the size of Box-Filter, to build scala space.
  • 方向定位，haar小波
  • Integral image[积分图]
    • 递归计算
    • $$ I(x,y)=i(x,y)+I(x-1,y)+I(x,y-1)+I(x-1,y-1) $$
    • 算好之后达到快速计算任意图形区域积分的目的
    • 
    • $$ I_{\square_{ABCD}} = I(C)+I(A)-I(B)-I(D) $$
  • Hessian矩阵
• HAHOG
• ORB

Reference

• SURF is faster than SIFT?
  • stackoverflow
• The Difference between of SIFT and SURF
  • 【CV学习5】SURF算法详解 - 苟富贵
• KAZE
  • 一点一滴完全突破KAZE特征检测算法，从各向异性扩散滤波开始(1) - 术之多
  • Perona-Malik方程（各向同性非线性扩散实现图像滤波） - 查讯纤的文章 - 知乎
  • 各项异性扩散（Anisotropic diffusion）
  • 非等向性擴散 - Wikipedia