python 点的投影变换

单通道就可以了：

  

   

    

     

    
    

     

      # -*- coding: utf-8 -*-
     
    
   

    

     

    
    

     

      import os
     
    
   

    

     

    
    

     

      import numpy as np
     
    
   

    

     

    
    

     

      import cv2
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      # -*- coding:utf-8 -*-
     
    
   

    

     

    
    

     

      import cv2
     
    
   

    

     

    
    

     

      import numpy as np
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      def rad(x):
     
    
   

    

     

    
    

     
 return x * np.pi / 180
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      img = np.zeros((400,400),dtype=np.uint8)
     
    
   

    

     

    
    

     

      # cv2.imshow("original", img)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      img[100,10]=(255)
     
    
   

    

     

    
    

     

      img[100,11]=(255)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      img[30,30]=(255)
     
    
   

    

     

    
    

     

      img[30,31]=(255)
     
    
   

    

     

    
    

     

      img[70,70]=(255)
     
    
   

    

     

    
    

     

      img[70,71]=(255)
     
    
   

    

     

    
    

     

      img[20,100]=(255)
     
    
   

    

     

    
    

     

      img[20,101]=(255)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      w, h = img.shape[0:2]
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      anglex = 0
     
    
   

    

     

    
    

     

      angley = 30
     
    
   

    

     

    
    

     

      anglez = 0  # 是旋转
     
    
   

    

     

    
    

     

      fov = 42
     
    
   

    

     

    
    

     

      while 1:
     
    
   

    

     

    
    

     
 # 镜头与图像间的距离，21为半可视角，算z的距离是为了保证在此可视角度下恰好显示整幅图像
     
    
   

    

     

    
    

     

       z = np.sqrt(w ** 2 + h ** 2) / 2 / np.tan(rad(fov / 2))
     
    
   

    

     

    
    

     
 # 齐次变换矩阵
     
    
   

    

     

    
    

     

       rx = np.array([[1, 0, 0, 0],
     
    
   

    

     

    
    

     

       [0, np.cos(rad(anglex)), -np.sin(rad(anglex)), 0],
     
    
   

    

     

    
    

     

       [0, -np.sin(rad(anglex)), np.cos(rad(anglex)), 0, ],
     
    
   

    

     

    
    

     

       [0, 0, 0, 1]], np.float32)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       ry = np.array([[np.cos(rad(angley))
     
    
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/112385905