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문헌 초역 : 폐결핵 환자의 기관내 채담에 의한 결핵균의 검색, "트레핀"에 의한 경피폐생검
( Kohei Hara ),( Toshiro Oda ),( Masao Nakatomi ),( Nobuhiro Horiuchi ),( Tuneo Tsutsumi ),( Masaki Hirota ),( Nobuoki Mori ),( Masaru Nasu ),( Atsushi Seito ),( Hisashi Ishikawa ),( E. Garner King ) 대한결핵 및 호흡기학회 1977 Tuberculosis and Respiratory Diseases Vol.24 No.1
A convergence proof for local mode filtering
Shuoyan Zhang,Kohei Inoue,Kenji Hara 한국통신학회 2021 ICT Express Vol.7 No.4
In this paper, we present a convergence proof for an iterative procedure of local mode filtering. We formulate the local mode filtering as a quadratic optimization problem based on the Legendre transform of convex function, from which two closed-form expressions at each iteration step are derived for variables to be optimized. Those analytical solutions ensure that the value of objective function increases monotonically with the progress of the iterative procedure. We also show experimental results using a grayscale image, which support our theoretical results practically.
Saturation improvement in hue-preserving color image enhancement without gamut problem
Hengjun Yu,Kohei Inoue,Kenji Hara,Kiichi Urahama 한국통신학회 2018 ICT Express Vol.4 No.3
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 an RGB color cube to increase saturation. Then, that projected color is transformed into a target color with a designated luminance and the same hue as the original color. Experimental results show that the proposed method can enhance color images better than can recent hue-preserving color image enhancement methods.