By Richard H. Vollmerhausen
Advancing expertise 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 collection of know-how ideas. This educational textual content offers the idea, methods, and data essential to review and examine the functionality of obtainable imaging applied sciences. half I updates the sooner paintings provided in research of Sampled Imaging platforms (2000). half II discusses functionality evaluate of electro-optical imagers. half III offers laptop courses (on a supplemental CD-ROM) and up to date info on detector arrays, optics, and reveal concepts. The publication covers numerous exhibit codecs and interfaces, and offers unique details on to be had focal aircraft arrays (FPAs). specific emphasis is put on conception and perform for the wide range of accessible 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 accessible FPAs are supplied. the data on optics, demonstrate, and FPA subassemblies permits the version person to make fast 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)
Introduction to Fourier Optics, McGraw-Hill, San Francisco (1968). Holst, G. , Sampling, Aliasing, and Data Fidelity, SPIE Press, Bellingham, WA (1998). Wozencraft, J. M. and I. M. Jacobs, Principles of Communication Engineering, Wiley, New York (1965). Chapter 2 Fourier Integral Representation of an Optical Image This chapter describes optical transfer functions. The concepts of linearity and shift invariance were introduced in Chapter 1. This chapter continues that discussion by applying those concepts to optical imaging components and systems.
6) holds. F (ξ,η) Fx (ξ) Fy (η) . 6) Fourier Integral Representation of an Optical Image 37 The optical psf is a combination of the diffraction and geometric aberrations. The on-axis optical blur can be characterized by a function that is separable in polar coordinates. The detector psf is a rectangular shape that is separable in Cartesian coordinates if the detector edges are properly aligned to the coordinate axes. The collective psf of the detector and the optics is not separable in either polar or Cartesian coordinates.
25) where an is the magnitude of the nth of N components. is the Dirac delta function. We calculate the root-mean-square (rms) blur radius β using Eq. 26): 2 β an n 2N . 27) approximates the vibration blur MTF. 18 shows an example; this example uses the sum of ten sine waves with random amplitudes and phases. The Gaussian is a good approximation at low spatial frequencies for complex spectra. 18 Example showing Gaussian approximation to the sum of ten sinusoids with random amplitude and phase.
Analysis and Evaluation of Sampled Imaging Systems (SPIE Tutorial Text Vol. TT87) (SPIE Tutorial Texts) by Richard H. Vollmerhausen