Direct Measurement of the Curvature of Visual Space
نویسندگان
چکیده
منابع مشابه
Direct measurement of the curvature of visual space.
We consider the horizontal plane at eye height, that is all objects seen at the horizon. Although this plane visually degenerates into a line in the visual field, the 'depth' dimension nevertheless gives it a two-dimensional structure. We address the problem of intrinsic curvature of this plane. The classical geometric method is based on Gauss's original definition: The angular excess in a tria...
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Gingival Thickness Assessment: Visual versus Direct Measurement
Background and Aim: Several methods have been suggested to measure gingival thick-ness. This study aimed to assess the reliability of visual assessment of facial gingival biotype of maxillary and mandibular teeth with or without using a periodontal probe in comparison with direct measurement. Materials and Methods: Sixty-seven healthy patients (25 women and 42 men) with a total of 100 hopele...
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ژورنال
عنوان ژورنال: Perception
سال: 2000
ISSN: 0301-0066,1468-4233
DOI: 10.1068/p2921