Title :
A novel block-based authentication technique for binary images by block pixel rearrangements
Author :
Huang, Pei-Ming ; Wu, Da-Chun ; Tsai, Wen-Hsiang
Author_Institution :
Dept. of Comput. & Inf. Sci., Nat. Chiao Tung Univ., Hsinchu
Abstract :
A novel block-based binary image authentication technique is proposed. The authentication signals of each 9times9 image block are placed in a selected 3times3 block within the 9times9 block. The authentication signal contains a certain relationship contributed by the standard deviation values of the other eight 3times3 blocks. Authentication signals are generated by rearranging the pixels in the selected 3times3 block. The rearrangement is designed according to a property of inverse halftoning to keep the visual change in the selected block imperceptible. By comparing the arrangement of the block pixels in a suspicious image with the extracted authentication signals, the fidelity and integrity of the image can be verified
Keywords :
data compression; data encapsulation; image coding; message authentication; watermarking; authentication signal relationship; authentication signals; block pixel rearrangements; block-based binary image authentication technique; image block; image fidelity; image integrity; imperceptible block visual change; inverse halftoning; standard deviation values; suspicious image; Authentication; Data encapsulation; Gray-scale; Image quality; Information management; Information science; Pixel; Signal generators; Signal processing; Watermarking;
Conference_Titel :
Multimedia and Expo, 2004. ICME '04. 2004 IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-8603-5
DOI :
10.1109/ICME.2004.1394347
