August 1999
Intermediate to advanced
559 pages
30h 44m
English
Content preview from Scientific Photography and Applied ImagingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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25 High speed photography and photonics
25.1 Introduction
25.1.1 Motion studies
Many events involving motion occur in too short a period of time to be perceived. The general limitations of human visual perception have been covered in Chapter 2 and those concerning time and motion have been detailed by Hyzer (1986). Visual inertia limits minimum visual response time to some 0.1s and foveal vision has a maximum RP of 30 cycles/ degree (≈ 1 arc. min) with a maximum response at 3 cycles/degree. For a moving subject, ocular pursuit is limited to some 120 degrees s-1 or ≈ 2 rads s-1. A selection of subjects and their typical velocities are given in Table 25.1.
A number of varied and diverse fields require detailed analysis or study of fast events, ...
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