The sampling lattice used to digitize continuous image data is a signi?cant determinant of the quality of the resulting digital image, and therefore, of the e?cacy of its processing. The nature of sampling lattices is intimately tied to the tessellations of the underlying continuous image plane. To allow uniform sampling of arbitrary size images, the lattice needs to correspond to a regular - spatially repeatable - tessellation. Although drawings and paintings from many ancient civilisations made ample use of regular triangular, square and hexagonal tessellations, and Euler later proved that these three are indeed the only three regular planar tessellations possible, sampling along only the square lattice has found use in forming digital images. The reasons for these are varied, including extensibility to higher dimensions, but the literature on the rami?cations of this commitment to the square lattice for the dominant case of planar data is relatively limited. There seems to be neither a book nor a survey paper on the subject of alternatives. This book on hexagonal image processing is therefore quite appropriate. Lee Middleton and Jayanthi Sivaswamy well motivate the need for a c- certedstudyofhexagonallatticeandimageprocessingintermsoftheirknown uses in biological systems, as well as computational and other theoretical and practicaladvantagesthataccruefromthisapproach. Theypresentthestateof the art of hexagonal image processing and a comparative study of processing images sampled using hexagonal and square grids.
Biological systems are a source of inspiration in the development of small autonomous sensor nodes. The two major types of optical vision systems found in nature are the single aperture human eye and the compound eye of insects. The latter are among the most compact and smallest vision sensors. The eye is a compound of individual lenses with their own photoreceptor arrays. The visual system of insects allows them to fly with a limited intelligence and brain processing power. A CMOS image sensor replicating the perception of vision in insects is discussed and designed in this book for industrial (machine vision) and medical applications.
The CMOS metal layer is used to create an embedded micro-polarizer able to sense polarization information. This polarization information is shown to be useful in applications like real time material classification and autonomous agent navigation. Further the sensor is equipped with in pixel analog and digital memories which allow variation of the dynamic range and in-pixel binarization in real time. The binary output of the pixel tries to replicate the flickering effect of the insect's eye to detect smallest possible motion based on the change in state. An inbuilt counter counts the changes in states for each row to estimate the direction of the motion. The chip consists of an array of 128x128 pixels, it occupies an area of 5 x 4 mm2 and it has been designed and fabricated in an 180nm CMOS CIS process from UMC.
Rick Sammon's Evolution of an Image illustrates the creative photographic process from start to finish. In this book, Canon Explorer of Light Rick Sammon pulls back the curtain to prove that creating amazing photographs is a well-thought-out process that involves several stages.
Comprising 50 case studies that examine photographs taken by Rick around the world in a wide variety of shooting situations, Evolution of an Image shows the power of creative thinking, getting it right in the camera, and the careful use of image processing using Lightroom.
By including his outtakes- and the reasons that he considers them outtakes- Rick suggests the steps that every photographer should take in order to improve their images. Combining technical advice with tips on lighting, composition and using Lightroom, this book will motivate and encourage those looking to evolve as creative photographers and digital darkroom artists.
Key features include:
More than 200 before-and-after photographs
Fully illustrated sections on wildlife, seascape, landscape, scenic, action and people photography
Screen grabs showing Rick's Lightroom adjustments
Suggestions on working in Adobe Photoshop Lightroom as well as Adobe Photoshop
Special section on Rick's "Sammonisms," or quick tips on getting the best in-camera image
Advice on evolving as a photographer
Inspirational photographs from Provence, the Palouse, Kenya, Antarctica, Iceland, Alaska, Mongolia, Myanmar, Colorado and more
In an age of self-publishing hype and scattered sources of reliable information, it's difficult for the would-be self-publisher to learn how to properly launch their career and avoid the inevitable pitfalls the world of independent publishing is known for. Not anymore. Getting Down and Digital: How to Self-publish Your Book is by self-publishing veteran A.P. Fuchs, who has been self-publishing fiction for nearly a decade. From getting suckered in by a vanity press to learning the hard truth behind successful self-publishing, A.P. Fuchs has been through the school of hard knocks and beyond, coming out on the other side with a publishing platform that has enabled him to support his family while independently publishing fiction. In Getting Down and Digital: How to Self-publish Your Book you will learn: the most critical lesson about self-publishing you will ever discover; a no-nonsense, non-hyped approach to desktop publishing; proper paperback and eBook formatting; book marketing strategies for on-line and off-line sales; all explained in an easy-to-understand, step-by-step format, helping you to take your finished manuscript to market with ease; paperback and eBook publishing checklists and notes section. No hype. No bologna. Just pure, honest self-publishing. If you're tired of the confusion, tired of the hype and just want a simple and concise way to properly self-publish your book and be successful at it, then Getting Down and Digital: How to Self-publish Your Book is required reading for any serious self-publisher, whether just starting out or having self-published already. ABOUT THE AUTHOR: A.P. Fuchs is the author of many novels and short stories. His most recent books are Axiom-man: Outlaw; Axiom-man: Episode No. 2: Underground Crusade; Getting Down and Digital: How to Self-publish Your Book; Look, Up on the Screen! The Big Book of Superhero Movie Reviews; Canadian Scribbler: Collected Letters of an Underground Writer; and Redemption of the Dead, the third book in his time travel zombie trilogy. Also a cartoonist, he is known for his superhero series, The Axiom-man Saga, both in novel and comic book format.
2014 BMA Medical Book Awards Highly Commended in Radiology category!
Image-Guided Interventions, a title in the Expert Radiology Series, brings you in-depth and advanced guidance on all of today's imaging and procedural techniques. Whether you are a seasoned interventionalist or trainee, this single-volume medical reference book offers the up-to-the-minute therapeutic methods necessary to help youformulate the best treatment strategies for your patients. The combinedknowledge of radiology experts from around the globe provides a broad range of treatment options and perspectives,equipping you to avoid complications and put today's best approaches to work in your practice.
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