Patent ID: 11886647
Assignee: SHANGHAI JIAO TONG UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. An in-air gesture control system for implementing the in-air gesture control method based on visible light signals comprises: a frame processing unit at transmitter, a signal processing unit at receiver and a gesture recognition unit, wherein: frame processing unit at transmitter processes #e-current content into a pair of multi-line complementary frames according to the content displayed in the current frame of the screen, so that the visual effect before and after mixing the two frames is the same, and the frequency that breaks the screen refresh rate limit can be generated; the signal processing unit preprocess the light intensity data received by the light sensor to obtain the key frequency energy sequences; the gesture recognition unit selects the feature sequences and uses k-NearestNeighbor (kNN) to classify the gesture according to the key frequency energy sequences generated by the signal processing unit at receiver to obtain the gesture recognition result;
further, XYZ is converted into two dimensions, including chromaticity and luminance:, x
   =
   
    X
    
     X
     +
     Y
     +
     Z
    
   
  
  ,
  
   y
   =
   
    Y
    
     X
     +
     Y
     +
     Z
    
   
  
  ,
  
   Y
   =
   Y
  
  ,, where: (x, y) represents chromaticity and Y represents luminance.