The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Em trabalhos anteriores propusemos uma técnica esteganográfica para imagens em escala de cinza chamada BPCS-Esteganografia. Também aplicamos essa técnica a imagens coloridas, decompondo a imagem em suas três imagens componentes coloridas e tratando cada uma como uma imagem em escala de cinza. Este artigo propõe um método para aplicar BPCS-Esteganografia a imagens baseadas em paletas. Em imagens baseadas em paleta, os dados da imagem podem ser decompostos em imagens de componentes coloridos semelhantes às de imagens coloridas. Podemos então incorporar em uma ou mais imagens componentes coloridas. No entanto, mesmo que apenas uma das imagens do componente colorido seja usada para incorporação, o número de cores na paleta após a incorporação pode exceder o número máximo permitido. Para representar os dados da imagem em formato baseado em paleta, é necessária a quantização de cores. Não podemos alterar os valores de pixel da imagem do componente colorido que contém as informações incorporadas, mas apenas podemos alterar os valores de pixel das outras imagens do componente colorido. Assumimos que a degradação da imagem do componente2 colorido com informações incorporadas é menor do que a das imagens do componente colorido usadas para redução de cor. Portanto, incorporamos informações secretas no G imagem componente, porque o sistema visual humano é mais sensível às mudanças na luminância de uma cor, e G tem a maior contribuição para a luminância dos três componentes de cor. Para reduzir o número de cores, o R e B as imagens componentes são então alteradas de uma forma que minimize o erro quadrado.
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Michiharu NIIMI, Richard O. EASON, Hideki NODA, Eiji KAWAGUCHI, "A Method to Apply BPCS-Steganography to Palette-Based Images Using Luminance Quasi-Preserving Color Quantization" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 9, pp. 2141-2148, September 2002, doi: .
Abstract: In previous work we have proposed a steganographic technique for gray scale images called BPCS-Steganography. We also apply this technique to full color images by decomposing the image into its three color component images and treating each as a gray scale image. This paper proposes a method to apply BPCS-Steganography to palette-based images. In palette-based images, the image data can be decomposed into color component images similar to those of full color images. We can then embed into one or more of the color component images. However, even if only one of the color component images is used for embedding, the number of colors in the palette after embedding can be over the maximum number allowed. In order to represent the image data in palette-based format, color quantization is therefore needed. We cannot change the pixel values of the color component image that contains the embedded information, but can only change the pixel values of the other color component images. We assume that the degrading of the color component2 image with information embedded is smaller than that of the color component images that are used for color reduction. We therefore embed secret information into the G component image, because the human visual system is more sensitive to changes the luminance of a color, and G has the largest contribution to luminance of the three color components. In order to reduce the number of colors, the R and B component images are then changed in a way that minimizes the square error.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_9_2141/_p
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@ARTICLE{e85-a_9_2141,
author={Michiharu NIIMI, Richard O. EASON, Hideki NODA, Eiji KAWAGUCHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Method to Apply BPCS-Steganography to Palette-Based Images Using Luminance Quasi-Preserving Color Quantization},
year={2002},
volume={E85-A},
number={9},
pages={2141-2148},
abstract={In previous work we have proposed a steganographic technique for gray scale images called BPCS-Steganography. We also apply this technique to full color images by decomposing the image into its three color component images and treating each as a gray scale image. This paper proposes a method to apply BPCS-Steganography to palette-based images. In palette-based images, the image data can be decomposed into color component images similar to those of full color images. We can then embed into one or more of the color component images. However, even if only one of the color component images is used for embedding, the number of colors in the palette after embedding can be over the maximum number allowed. In order to represent the image data in palette-based format, color quantization is therefore needed. We cannot change the pixel values of the color component image that contains the embedded information, but can only change the pixel values of the other color component images. We assume that the degrading of the color component2 image with information embedded is smaller than that of the color component images that are used for color reduction. We therefore embed secret information into the G component image, because the human visual system is more sensitive to changes the luminance of a color, and G has the largest contribution to luminance of the three color components. In order to reduce the number of colors, the R and B component images are then changed in a way that minimizes the square error.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - A Method to Apply BPCS-Steganography to Palette-Based Images Using Luminance Quasi-Preserving Color Quantization
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2141
EP - 2148
AU - Michiharu NIIMI
AU - Richard O. EASON
AU - Hideki NODA
AU - Eiji KAWAGUCHI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2002
AB - In previous work we have proposed a steganographic technique for gray scale images called BPCS-Steganography. We also apply this technique to full color images by decomposing the image into its three color component images and treating each as a gray scale image. This paper proposes a method to apply BPCS-Steganography to palette-based images. In palette-based images, the image data can be decomposed into color component images similar to those of full color images. We can then embed into one or more of the color component images. However, even if only one of the color component images is used for embedding, the number of colors in the palette after embedding can be over the maximum number allowed. In order to represent the image data in palette-based format, color quantization is therefore needed. We cannot change the pixel values of the color component image that contains the embedded information, but can only change the pixel values of the other color component images. We assume that the degrading of the color component2 image with information embedded is smaller than that of the color component images that are used for color reduction. We therefore embed secret information into the G component image, because the human visual system is more sensitive to changes the luminance of a color, and G has the largest contribution to luminance of the three color components. In order to reduce the number of colors, the R and B component images are then changed in a way that minimizes the square error.
ER -