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    Còn được gọi là:
    
    alignment marker
    
  

  

  
  
Small 5x5 module squares placed at regular intervals in QR codes version 2 and above. They correct for perspective distortion and surface curvature during scanning. The number increases with version — Version 2 has 1 alignment pattern, Version 40 has 46.


  



  

  
  
  
  

  
  
  
  

    
Thuật ngữ liên quan

    

      
      Finder Pattern
      
      Orientation
      
      Distortion Correction
      
    

  

  
  

  
  
  

    
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          Error Correction & Data Integrity
          
        

        
        
        
…after de-interleaving Grid sampling quality depends on alignment pattern integrity