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| video magnifier ： ウィキペディア英語版 |
video magnifier
This article is about tools for visually-impaired people. For image-processing techniques not related to the visually impaired, please create other articles such as Eulerian video magnification.
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Video magnifiers are electronic devices that use a camera and a display screen to perform digital magnification of printed materials. The display screen is usually LCD or a similar flat-screen technology (although older video magnifiers have used CRT displays), and the device usually includes a lamp to illuminate the source material. Video magnifiers are designed to be mostly used by people with low vision that cannot be helped using a conventional magnifying glass.
==Advantages==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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