Title :
A method of improving image quality for medical video hardcopy
Author :
Toraichi, Kazuo ; Ishiuchi, Satoni ; Iwaki, Mamoru
Author_Institution :
Inst. of Inf. Sci. & Electron., Tsukuba Univ., Japan
Abstract :
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
Keywords :
biomedical electronics; picture processing; video signals; bivariate quadratic spline interpolation; digital filter; digital image; enlargement; image processing; image quality; impulse response; input image; medical image diagnosis; medical video hardcopy; Biomedical imaging; Digital filters; Digital images; Image quality; Image resolution; Interpolation; Medical diagnostic imaging; Medical simulation; Spline; TV;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266725
