Real-time observation and measurement of a magneto-optic recorded domain using an image processing technique

A system to observe the magnetic domain recorded on a magneto-optic disk wi th a multi-layer structure was suggested. The four parts, reading. writing, erasing and domain observation, are combined into a whole. By applying a d igital image processing technique, the blurred domain image can be segmente d and enhanced, and the domain morphology can be observed directly under va rious recording conditions. Additionally, the resolution and pixel spacing for the image system are discussed. In an experiment using this system we o bserved the domain on a direct overwrite disk and a non-direct overwrite di sk, and analyzed the reasons for the difference. (C) 2000 Elsevier Science S.A. All rights reserved.