| 摘要 |
<p>PURPOSE:To attain graphic input more accurately than that of a CCD camera (image reader) by inputting an original drawing image or a real substance image observed through a perspective window part to a computer as a facsimile drawing. CONSTITUTION:When an original drawing (reflecting original) 9 or a real substance is set on the plane of a set plate 7 and it is illuminated by an illumination source 8 and a black box 2 is observed from the perspective window part 5, the original drawing 9 or the image 9a of the real substance can be observed visually in a state where they are superposed optically on a CRT screen plane 21 by the function of a half mirror 6. In such a state, it is possible to perform plotting input (storage) to the computer by making the image 9a, that is, the original drawing 9 or the facsimile image of the real substance into a drawing by positioning a cursor 23 to each apex of the image 9a as observing visually the image 9a and inputting each apex position to the computer. In such a way, the graphic input can be performed more accurately than image reading input by the CCD camera.</p> |
