Zobrazeno 1 - 10
of 251
pro vyhledávání: '"Kiichi Urahama"'
Publikováno v:
ICT Express, Vol 4, Iss 3, Pp 134-137 (2018)
This study proposes a method to improve the saturation of colors during hue-preserving color image enhancement without the gamut problem. First, the color of each pixel in an input image is projected onto one of three bisecting planes or bisectors of
Externí odkaz:
https://doaj.org/article/64634fffa7af40ec8b91c35f110d44e2
Publikováno v:
Journal of Imaging, Vol 3, Iss 3, p 24 (2017)
A large number of color image enhancement methods are based on the methods for grayscale image enhancement in which the main interest is contrast enhancement. However, since colors usually have three attributes, including hue, saturation and intensit
Externí odkaz:
https://doaj.org/article/6416aa4b6ebf4207b608bd5bcdedaa1e
Autor:
Kiichi Urahama, Toru Hiraoka
Publikováno v:
IEICE Transactions on Information and Systems. :2642-2645
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2aeebda32a78ed54da75ac3d82cf718e
https://doi.org/10.1587/transinf.2018edl8270
https://doi.org/10.1587/transinf.2018edl8270
Publikováno v:
Journal of the Institute of Industrial Applications Engineers. 7:106-109
In this paper, we propose a method that optimizes the parameters of tone mapping operators by compressing the dynamic range of HDR images using natural image statistics.First, a prior probability model of a natural image is constructed for color natu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fdcd04ac6fa17bc805d4571545c86d0
https://doi.org/10.12792/jiiae.7.106
https://doi.org/10.12792/jiiae.7.106
Autor:
Kiichi Urahama, Naoki Ono
Publikováno v:
Journal of the Institute of Industrial Applications Engineers. 7:38-41
We propose a method for enhancing images degraded by hazy scattering and attenuation of lights. Images are enhanced in two steps. The first step is restoration of the hue of colors on the basis of the gray world assumption. This hue restored images a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::462d0b7f8e80f41b7ca09712b853dfbd
https://doi.org/10.12792/jiiae.7.38
https://doi.org/10.12792/jiiae.7.38
Publikováno v:
Journal of the Institute of Industrial Applications Engineers. 7:42-50
Image steganography is a technique for concealing a secret message in a cover image unobtrusively. The resultant images are called the stego images. In this paper, we propose a method for concealing a secret image into a cover image of the same size,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a55242cb4344c30f5e73abcacaf745e
https://doi.org/10.12792/jiiae.7.42
https://doi.org/10.12792/jiiae.7.42
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :486-489
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa20cb963f1cb53eec933a48e2ab4519
https://doi.org/10.1587/transfun.e102.a.486
https://doi.org/10.1587/transfun.e102.a.486
Publikováno v:
The Journal of The Institute of Image Information and Television Engineers. 73:397-400
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81975700259c69d1e433484c4556fc2a
https://doi.org/10.3169/itej.73.397
https://doi.org/10.3169/itej.73.397
Publikováno v:
Journal of the Institute of Industrial Applications Engineers. 6:144-147
We propose a procedure for determining the parameters in the bilateral filter (BF) used for the error-diffusion halftoning where pixels are scanned in the ascending order of errors. In this halftoning, binarization errors produced at each pixel are d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b272f8f4c30073d6e2dcba5c86f8e41
https://doi.org/10.12792/jiiae.6.144
https://doi.org/10.12792/jiiae.6.144
Publikováno v:
Information Processing Letters. 138:31-34
We propose a novel method for classifying photographic and computer-generated images based on generalized Gaussian distribution (GGD) modeling of subband coefficients. The estimated shape and standard deviation parameters of GGD within each resolutio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::143af4b4ef7987b925151c753d9e5dc3
https://doi.org/10.1016/j.ipl.2018.05.010
https://doi.org/10.1016/j.ipl.2018.05.010