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Device for the determination and recording of the angle between the object lighting - and the viewing direction in the case of holographic images
Device for the determination and recording of the angle between the object lighting - and the viewing direction in the case of holographic images
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机译:用于确定和记录物体照明与视角之间的角度的设备
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摘要
The subject of the picture is to include also an object containin a co-ordinate system. This consists of three squares (2, 3, 4) joined to form a trihedral angle, with a set of concentric circles drawn centrally on each square and a small sphere (5) at the centre of the cube of which the squares form three faces. This object is set up in the pictorial composition so that the illumination to be used casts a shadow of the sphere (5) centrally on one face of the cube (11). In the finished picture the sphere will, in eneral, appear elsewhere. The distance (7) from its apparent position to the centre of the square is shown by concentric circles, serving as co-ordinate curves.
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