DocumentCode :
2349998
Title :
High capacity and secure digital steganography to palette-based images
Author :
Niimi, Michiharu ; Noda, Hideki ; Kawaguchi, Eiji ; Eason, Richard O.
Author_Institution :
Kyushu Inst. of Technol., Kitakyushu, Japan
Volume :
2
fYear :
2002
fDate :
2002
Abstract :
We have already proposed a large capacity steganography for gray scale images called BPCS-steganography. This paper shows a method to apply BPCS-steganography to palette-based images which consists of a palette storing color vector information and an index image whose pixel value is corresponding to a index in the palette. A palette-based images can be represented by combining R G and B color component images. We embed secret information into the G images. A number of color vectors in a palette after embedding by BPCS would be over the maximum number. In order to reduce the number of colors, the rest of the two component images are then changed in a way that minimizes the square error. The idea behind the color quantization is that the degrading of images manipulated to reduce color is worse than the degrading which occurs with the embedding.
Keywords :
cryptography; data compression; image coding; image colour analysis; image representation; quantisation (signal); BPCS-steganography; RGB color component images; color quantization; color vector information; color vectors; gray scale images; high capacity digital steganography; image representation; index image; large capacity steganography; palette-based images; secret information embedding; secure digital steganography; square error minimization; Color; Degradation; Digital images; Mean square error methods; Pixel; Quantization; Robustness; Security; Steganography; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing. 2002. Proceedings. 2002 International Conference on
ISSN :
1522-4880
Print_ISBN :
0-7803-7622-6
Type :
conf
DOI :
10.1109/ICIP.2002.1040101
Filename :
1040101
Link To Document :
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