Title :
Image magnification by modifying DCT coefficients
Author :
Lee, Jeong Ho ; Lee, Jong Min ; Park, Ki Tae ; Moon, Young Shik
Author_Institution :
Dept. of Comput. Sci. & Eng., Hanyang Univ., Seoul, South Korea
Abstract :
In this paper, we propose the method for magnification of a single image by modifying DCT coefficients. The proposed method modifies DCT coefficients using a reference map that indicates variations of pixel values according to the image magnification. Experimental results show that the performance of our method has been improved by 7% over the conventional methods.
Keywords :
discrete cosine transforms; image enhancement; image resolution; DCT coefficients modification; conventional method; image magnification; pixel values; reference map; Conferences; Discrete cosine transforms; Frequency domain analysis; Image edge detection; Image reconstruction; Image resolution; Interpolation;
Conference_Titel :
Consumer Electronics (ICCE), 2012 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4577-0230-3
DOI :
10.1109/ICCE.2012.6161769
