Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by Cai-Hua Li
Total Records ( 1 ) for Cai-Hua Li
  Cai-Hua Li , Zhe-Ming Lu and Yu-Xin Su
  Recently, more and more attention have been paid to reversible data hiding techniques for compressed images based on JPEG, JPEG2000, Vector Quantization (VQ) and Block Truncation Coding (BTC). Exiting data hiding schemes in the BTC domain modified the BTC encoding stage or BTC-compressed data according to the secret bits and their embedding capacity was not high and might reduce the image quality. This study introduced the histogram shifting technique to BTC-compressed mean tables to further improve the hiding capacity while maintaining the BTC-compressed image quality. First, the original image was encoded by the BTC technique to obtain the BTC-compressed data which could be represented by a high mean table, a low mean table and a bitplane sequence. Then, the proposed reversible data hiding scheme was performed on the BTC-compressed data. Present hiding scheme contained two main steps, one was the bitplane flipping step that hid secret bits by swapping the high mean and low mean, the other was histogram shifting of the resulting mean tables after swapping. Experimental results showed that our scheme outperformed two existing BTC-based reversible data hiding works, in terms of capacity and efficiency.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility