In this paper, 1) it is shown that amplitude-only images (AOIs) have quite wide intensity ranges (IRs), and 2) an IR reduction method for AOIs is proposed. An AOI is the inversely transformed amplitude spectra of an image, and it is used in the privacy- and copyright-protected image trading system because of its invisibility. Since an AOI is the coherent summation of cosine waves with the same phase, the IR of the AOI is too large to be stored and/or transmitted. In the proposed method, random signs are applied to discrete Fourier transformed amplitude coefficients to obtained AOIs with significantly lower IRs without distortion while keeping the invisibility of images. With reasonable processing time, high correct watermark extracting rates, inversely quantized AOIs with low mean squared errors, and reconstructed images with high peak signal-to-noise ratios are obtained by a linear quantizer in the proposed method.
Wannida SAE-TANG
Tokyo Metropolitan University
Masaaki FUJIYOSHI
Tokyo Metropolitan University
Hitoshi KIYA
Tokyo Metropolitan University
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Wannida SAE-TANG, Masaaki FUJIYOSHI, Hitoshi KIYA, "A Generation Method of Amplitude-Only Images with Low Intensity Ranges" in IEICE TRANSACTIONS on Fundamentals,
vol. E96-A, no. 6, pp. 1323-1330, June 2013, doi: 10.1587/transfun.E96.A.1323.
Abstract: In this paper, 1) it is shown that amplitude-only images (AOIs) have quite wide intensity ranges (IRs), and 2) an IR reduction method for AOIs is proposed. An AOI is the inversely transformed amplitude spectra of an image, and it is used in the privacy- and copyright-protected image trading system because of its invisibility. Since an AOI is the coherent summation of cosine waves with the same phase, the IR of the AOI is too large to be stored and/or transmitted. In the proposed method, random signs are applied to discrete Fourier transformed amplitude coefficients to obtained AOIs with significantly lower IRs without distortion while keeping the invisibility of images. With reasonable processing time, high correct watermark extracting rates, inversely quantized AOIs with low mean squared errors, and reconstructed images with high peak signal-to-noise ratios are obtained by a linear quantizer in the proposed method.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E96.A.1323/_p
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@ARTICLE{e96-a_6_1323,
author={Wannida SAE-TANG, Masaaki FUJIYOSHI, Hitoshi KIYA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Generation Method of Amplitude-Only Images with Low Intensity Ranges},
year={2013},
volume={E96-A},
number={6},
pages={1323-1330},
abstract={In this paper, 1) it is shown that amplitude-only images (AOIs) have quite wide intensity ranges (IRs), and 2) an IR reduction method for AOIs is proposed. An AOI is the inversely transformed amplitude spectra of an image, and it is used in the privacy- and copyright-protected image trading system because of its invisibility. Since an AOI is the coherent summation of cosine waves with the same phase, the IR of the AOI is too large to be stored and/or transmitted. In the proposed method, random signs are applied to discrete Fourier transformed amplitude coefficients to obtained AOIs with significantly lower IRs without distortion while keeping the invisibility of images. With reasonable processing time, high correct watermark extracting rates, inversely quantized AOIs with low mean squared errors, and reconstructed images with high peak signal-to-noise ratios are obtained by a linear quantizer in the proposed method.},
keywords={},
doi={10.1587/transfun.E96.A.1323},
ISSN={1745-1337},
month={June},}
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TY - JOUR
TI - A Generation Method of Amplitude-Only Images with Low Intensity Ranges
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1323
EP - 1330
AU - Wannida SAE-TANG
AU - Masaaki FUJIYOSHI
AU - Hitoshi KIYA
PY - 2013
DO - 10.1587/transfun.E96.A.1323
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E96-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 2013
AB - In this paper, 1) it is shown that amplitude-only images (AOIs) have quite wide intensity ranges (IRs), and 2) an IR reduction method for AOIs is proposed. An AOI is the inversely transformed amplitude spectra of an image, and it is used in the privacy- and copyright-protected image trading system because of its invisibility. Since an AOI is the coherent summation of cosine waves with the same phase, the IR of the AOI is too large to be stored and/or transmitted. In the proposed method, random signs are applied to discrete Fourier transformed amplitude coefficients to obtained AOIs with significantly lower IRs without distortion while keeping the invisibility of images. With reasonable processing time, high correct watermark extracting rates, inversely quantized AOIs with low mean squared errors, and reconstructed images with high peak signal-to-noise ratios are obtained by a linear quantizer in the proposed method.
ER -