ISBN-10:
3527409564
ISBN-13:
9783527409563
Pub. Date:
06/15/2011
Publisher:
Wiley
Optical and Digital Image Processing: Fundamentals and Applications / Edition 1

Optical and Digital Image Processing: Fundamentals and Applications / Edition 1

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Optical and Digital Image Processing: Fundamentals and Applications 4 out of 5 based on 0 ratings. 1 reviews.
Boudville More than 1 year ago
The first 4 chapters are meant as introductions to their topics - optics, photonics, information theory and image processing. Each topic of course has entire texts devoted to it. But the chapters are offered here as a quick refresher. Chapter 4 on image processing refers to optical ['analog'] image processing, where the image plane has a 2 dimensional Fourier transform of the image. Note that this processing occurs in parallel across the entire lens. The speed of this meant that optical processing was for many years faster, and often very much faster, than digital processing. But the continued progress exemplified by Moore's Law meant that digital computers became competitive. In large part by being more flexible - software could be easily changed, whereas an optical system is often hardwired and less flexible. The book's contribution to optics is to let the reader appreciate both types of image processing and to understand that this is not a contest between them. There may be instances when both can be gainfully used to analyse an image. Deep in the book, chapter 18 ['Linking Analog and Digital Image Processing'] addresses this union in some detail. Chapter 16 ['Display and Projection'] and chapter 17 ['3D Displays'] look at the hardware in use today; explaining the ideas behind such items as the plasma display and the LED display. Chapter 16 looks at well established and common displays. While chapter 17 is more speculative and you might even regard this as more exciting. 3D displays are still very much in the experimental stage. Some need the user to wear glasses and some do not. Note that the 3d stereoscopic displays currently available, like in some movie theatres, do not give true 3D viewing. They do not account for motion parallax, where if you move, what you see changes. They are only 3D for a stationary viewer, whereas in real life, being able to move and see the image change gives vital depth cues. The chapter is useful in letting you see [pun intended] beyond the Hollywood recent hype of 3D movies. Multiview displays is the term used for displays that can show motion parallax. Alas, the chapter does not mention any commerically deployed systems. Which does however suggest future research possibilities for you. Related to the 3D displays is the use of holograms, in chapter 10 ['Holographic Visualisation of 3D Data'] and chapter 11 ['Holographic Data Storage Technology']. Strictly, this is the only way to see true 3D data, where both amplitude and phase are stored and then displayed. While the field has promise, the chapters show that huge technical obstacles remain. Especially with dynamic holography, where you might see a true 3d moving image. Chapter 11 is not about the display of holographic images but of the long held dream of storing data in a holographic format. Various recording media are described, including somewhat ironically the use of silver halide. This at least benefits from over a century of work on its chemistry and handling for use in photographic film. Chapter 11 concludes with a statement that working systems exist and are nearly commercially viable. You should take this with a grain of salt. Over 20 years ago, I heard similar claims and some startups were founded in the late 80s with ambitions along these lines. But conventional data storage on disks and chips continued to inexorably improve, which is why none of those startups were successful. Chapter 23 ['Compressed Sensing - "When Spars