Reliefbilder des hinteren Augenpols
作者:
V. Miszalok,
J. Wollensak,
期刊:
Ophthalmologica
(Karger Available online 1982)
卷期:
Volume 184,
issue 4
页码: 181-189
ISSN:0030-3755
年代: 1982
DOI:10.1159/000309204
出版商: S. Karger AG
关键词: Relief pictures;Posterior pole
数据来源: Karger
摘要:
A method for transformation of photographic transparencies into three-dimensional relief pictures is presented. Black-and-white or color slides of fundi were scanned by a TV camera, the video signals digitized point by point into 256 gray levels and fed into an image processing computer. After passing low pass filter programs, the pictures were retransformed in an analog form to display them on the monitor of an analog processor in relief form. Free choice of the analog relief parameters allow to produce topographic reliefs, which give three-dimensional impression of the optic disk, the macula and of other contrast-containing structures. The method is peculiarly suitable for the control of optic disk atrophies in case of glaucoma and neuritis.
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