Patent ID: 11885880
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The time-of-flight camera of claim 8, wherein the controller is further configured to:
determine a value for Mmax for the wrapped phase vectors within a determined maximum unwrapping distance; and
determine a value for M based on a value that generates an extremum for a value of UM such that 0≤M≤Mmax, wherein, U
    M
  
  =
  
    
      ∑
      m
    
    ⁢
    
      
        
          N
          k
        
        2
      
      [
      
        
          
            
              AB
              m
            
            ·
            
              [
              
                
                  cos
                  ⁡
                  
                    (
                    
                      2
                      ⁢
                      π
                      ⁢
                      
                        
                      
                      ⁢
                      
                        
                          f
                          m
                        
                        ⁡
                        
                          (
                          
                            
                              M
                              
                                f
                                
                                  m
                                  ⁢
                                  
                                    
                                  
                                  ⁢
                                  0
                                
                              
                            
                            +
                            
                              t
                              
                                d
                                ,
                                
                                  m
                                  ⁢
                                  
                                    
                                  
                                  ⁢
                                  0
                                
                              
                            
                            -
                            
                              t
                              
                                d
                                ,
                                m
                              
                            
                          
                          )
                        
                      
                    
                    )
                  
                
                -
                1
              
              ]
            
          
          =
          0
        
        ,
      
    
  

and wherein Nk is a total phase shifting steps at each frequency, ABm is an active brightness at each frequency fm and td,m is a wrapped time-of-flight at each frequency fm.