Download PDF by Richard H. Vollmerhausen: Analysis and Evaluation of Sampled Imaging Systems (SPIE

By Richard H. Vollmerhausen

ISBN-10: 0819480770

ISBN-13: 9780819480774

Advancing know-how in detector arrays, flat panel screens, and electronic photo processing offers new possibilities to extend imaging purposes and increase method functionality. Technical managers and layout engineers are confronted with comparing the fee, weight, and function of an ever-expanding number of expertise strategies. This instructional textual content offers the speculation, systems, and data essential to assessment and evaluate the functionality of obtainable imaging applied sciences. half I updates the sooner paintings awarded in research of Sampled Imaging platforms (2000). half II discusses functionality evaluate of electro-optical imagers. half III offers machine courses (on a supplemental CD-ROM) and updated info on detector arrays, optics, and exhibit suggestions. The ebook covers numerous demonstrate codecs and interfaces, and gives distinctive details on to be had focal airplane arrays (FPAs). specific emphasis is put on thought and perform for the wide range of obtainable infrared FPAs. applied sciences represented contain InSb, HgCdTe, QWIP, and uncooled thermal arrays. details is supplied at the quantum potency, blur, crosstalk, and noise features of every expertise. The detector and array dimensions of obtainable FPAs are supplied. the knowledge on optics, reveal, and FPA subassemblies permits the version consumer to make speedy and lifelike functionality exams of electro-optical imager designs.

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Extra resources for Analysis and Evaluation of Sampled Imaging Systems (SPIE Tutorial Text Vol. TT87) (SPIE Tutorial Texts)

Example text

29) when lowfrequency motion is complex. 30) gives vibration OTF for perceived jitter g(t). 1 t  0 165 g (t )  f (t )  0 33  t  0 165 f (t ) dt , t g (t )  f (t )  0 133  t  0 33 f (t ) dt , OTF (ξ)  1 tP  {cos[2πξg (t )]  i sin[2πξg (t )]}dt . 2 Effect of temporal sampling on line-of-sight jitter Temporal sampling by the imager is usually not important. However, stroboscopic effects can occur that lead to large errors when using Eqs. 30). This section describes the situation in which temporal sampling is important.

MTF is real. The lens at the bottom of Fig. 11 forms a blur that is symmetrical about a vertical axis, and the horizontal MTF is real. However, the blur at the bottom is not symmetrical about a horizontal axis; therefore, the vertical MTF is complex. Two simplifications are commonly used when modeling electro-optical imagers. The imager MTF is real and equal to the product of horizontal and vertical frequency response. Both simplifications introduce error into the analysis. 4 Perspectives on One-Dimensional Analysis The purpose of this section is to describe the pros and cons of one-dimensional analysis.

The samples of f(x) are taken anywhere in space. As sample phase or position varies, the function f(x) does not change; only where it is sampled changes. 14) is rewritten to explicitly permit the function f(x) to be located anywhere in sample space. This is done by letting f(x) be offset in space by a distance x. The origin at x = 0 is still a sample point: The Sampling Process 21 g ( x)  N 1  f ( x  x) ( x  nX )  r ( x). 17) n0 The Fourier transform is taken before the delta functions multiply f(x).

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Analysis and Evaluation of Sampled Imaging Systems (SPIE Tutorial Text Vol. TT87) (SPIE Tutorial Texts) by Richard H. Vollmerhausen


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