Patent ID: 11935191
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The data processing method, as recited in claim 3, wherein the corrected two-dimensional plane coordinate and the corrected three-dimensional elevation are calculated as:, {
  
    
      
        
          
            
              
                x
                f
              
              =
              
                R
                ⁢
                
                  
                
                ⁢
                arcsin
                ⁢
                
                  
                    Q
                    ⁡
                    
                      (
                      
                        x
                        ,
                        z
                      
                      )
                    
                  
                  R
                
              
            
          
        
        
          
            
              
                y
                f
              
              =
              y
            
          
        
        
          
            
              
                z
                f
              
              =
              
                z
                -
                R
                +
                
                  
                    
                      R
                      2
                    
                    -
                    
                      
                        [
                        
                          Q
                          ⁡
                          
                            (
                            
                              x
                              ,
                              z
                            
                            )
                          
                        
                        ]
                      
                      2
                    
                  
                
              
            
          
        
      
      ⁢
      
        

      
      ⁢
      Q
      ⁢
      
        (
        
          x
          ,
          z
        
        )
      
    
    =
    
      
        
          x
          3
        
        +
        
          
            x
            ⁡
            
              (
              
                R
                -
                z
              
              )
            
          
          ⁢
          
            
              
                R
                2
              
              -
              
                x
                2
              
            
          
        
      
      
        
          x
          2
        
        +
        
          
            (
            
              R
              -
              z
            
            )
          
          2
        
      
    
  

wherein x and y represent the initial two-dimensional plane coordinate of the elevation point; z represents the initial three-dimensional elevation of the elevation point; xf and yf represent the corrected two-dimensional plane coordinate of the elevation point; zf represents the corrected three-dimensional elevation of the elevation point; Q(x, z) represents an X coordinate of the orthographic point corresponding to the elevation point represented by x and z; and R represents the radius of curvature of the arc-shaped cylindrical surface of the curved table.