Patent ID: 11902430
Assignee: SHANGHAI MARITIME UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 1:
2. The quantum color image encrypting method based on modification direction according to claim 1, wherein:
the selecting a corresponding pixel group for embedding secret data based on the quantum state of a quantum key information bit specifically comprises:
using the pixels in two channels of R, G, B channels of the carrier image as a pixel group [|gYX1,|gYX2], then:, [
          
            ❘
            
              g
              YX
              1
            
          
          〉
        
        ,
        
          ❘
          
            g
            YX
            2
          
        
      
      〉
    
    ]
  
  =
  
    {
    
      
        
          
            
              
                
                  
                    
                      
                        
                          
                            [
                            
                              ❘
                              
                                R
                                YX
                              
                            
                            〉
                          
                          ,
                          
                            ❘
                            
                              G
                              YX
                            
                          
                        
                        〉
                      
                      ]
                    
                    ,
                    
                      
                    
                    ⁢
                    
                      if
                      ⁢
                      
                        
                      
                      ❘
                      
                        w
                        yx
                        0
                      
                    
                  
                  〉
                
                =
                
                  ❘
                  0
                
              
              〉
            
          
        
        
          
            
              
                
                  
                    
                      
                        
                          
                            [
                            
                              ❘
                              
                                R
                                YX
                              
                            
                            〉
                          
                          ,
                          
                            ❘
                            
                              B
                              YX
                            
                          
                        
                        〉
                      
                      ]
                    
                    ,
                    
                      
                    
                    ⁢
                    
                      if
                      ⁢
                      
                        
                      
                      ❘
                      
                        w
                        yx
                        0
                      
                    
                  
                  〉
                
                =
                
                  ❘
                  1
                
              
              〉
            
          
        
      
      ;
    
  

where |RYX, |GYX, |BYX respectively denote the pixel values corresponding to the three channels of the carrier image at position (Y, X); |wyx0 is the bit value of the key image at position (Y, X).