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A method of improving image quality for medical video hardcopy

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3 Author(s)
Toraichi, K. ; Inst. of Inf. Sci. & Electron., Tsukuba Univ., Japan ; Ishiuchi, S. ; Iwaki, M.

A method of improving the image quality of video hard copies is proposed. This method performs bivariate quadratic spline interpolation on a digital image. The impulse response of the interpolation is derived and used to design a fast digital filter for its implementation. Simulation for an input image with a resolution of 200 TV lines shows that the method produces an output that is psychovisually equivalent to one with a resolution of 300 TV lines. Thus the image impression can be improved to about 1.5 times that of the input image. It is noted that this method is as effective for image processing tasks such as enlargement in medical image diagnosis

Published in:

Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on

Date of Conference:

23-26 May 1989

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