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Selectively Embedding in Coefficients (SEC) Example - Lena

Zero Threshold SEC scheme image examples

Original lena Image (below)

  

Embedded Image (design QF 75) with 32,117 bits hidden (below)
 

 

Embedded Image (design QF 50) with 19,346 bits hidden (below)

  

Embedded Image (design QF 25) with 11,117 bits hidden (below)
 

 

Higher Threshold SEC scheme image examples

Original lena Image (below)

  

Unity threshold SEC embedded image with 5,261 bits hidden (below)
 

 

'2'-threshold SEC embedded image with 2,767 bits hidden (below)

  

'3'-threshold SEC embedded image with 1,898 bits hidden (below)