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Digital Light Field Photography
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Book Synopsis Digital Light Field Photography by : Ren Ng
Download or read book Digital Light Field Photography written by Ren Ng and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Application of Light-Field Cameras in Fluid Measurements by : Shengxian Shi
Download or read book Development and Application of Light-Field Cameras in Fluid Measurements written by Shengxian Shi and published by Springer Nature. This book was released on 2022-08-13 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive guide to 3D Light-Field camera based imaging, exploring the working principles, developments and its applications in fluid mechanics and aerodynamics measurements. It begins by discussing the fundamentals of Light-Field imaging and theoretical resolution analysis, before touching upon the detailed optics design and micro-lens array assembly. Subsequently, Light-Field calibration methods that compensate for optical distortions and establish the relations between the image and real-word 3D coordinates are covered. This is followed by Light-Field 3D reconstruction algorithms which are elaborated for micrometer-scale particles and centimeter-scale physical models. Last but not least, implementations of the preceding procedures to selected fundamental and applied flow measurement scenarios are provided at the end of the book. Development and Application of Light-Field Cameras in Fluid Measurements gives an in-depth analysis of each topic discussed, making it ideal as both an introductory and reference guide for researchers and postgraduates interested in 3D flow measurements.
Download or read book Light and Lens written by Robert Hirsch and published by Taylor & Francis. This book was released on 2008 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the tumultuous, ever-shifting terrain of the digital age, this groundbreaking introductory book offers the strength and stability of the fundamental aesthetic and technical building blocks necessary to create visually stimulating and thought-provoking digitally based photographs.
Book Synopsis Development of Airborne Light Field Photography by : Michael Dominick Yocius
Download or read book Development of Airborne Light Field Photography written by Michael Dominick Yocius and published by . This book was released on 2015 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light field photography offers a new approach to digitally captured images. These commercially available cameras are able to capture the 4D light field in a single image. This allows for a variety of image processing capabilities that traditional cameras do not offer. For example, the image can be digitally refocused after it is captured and its depth can be estimated. In terms of application, these capabilities could be beneficial on airborne platforms. However, a limitation of currently available light field cameras is that they are not fully functional at medium or long ranges. If these cameras were to capture light fields at longer ranges, they would have a practical application when mounted on low-flying aircrafts. This dissertation takes current light field photography techniques and modifies them so they work better to capture medium-range images. The majority of cameras that capture the 4D light field use a microlens array to modulate the incoming light before it hits the image sensor. Previous work using printed modulation masks garnered the same effect obtained by microlens arrays. This dissertation details the development of a modulation mask that has medium-range applications. A new way of extracting the 4D light field from raw images that uses a digital Fourier transform is presented. This method works for images captured with microlens arrays and printed mask cameras. Two prototype cameras were built and tested to demonstrate some of these concepts. The concepts demonstrated by these cameras could be used in the future designs of light field cameras.
Book Synopsis Computational Photography by : Saghi Hajisharif
Download or read book Computational Photography written by Saghi Hajisharif and published by Linköping University Electronic Press. This book was released on 2020-02-18 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and recent advancements of computational photography have revolutionized the imaging industry. Computational photography is a combination of imaging techniques at the intersection of various fields such as optics, computer vision, and computer graphics. These methods enhance the capabilities of traditional digital photography by applying computational techniques both during and after the capturing process. This thesis targets two major subjects in this field: High Dynamic Range (HDR) image reconstruction and Light Field (LF) compressive capturing, compression, and real-time rendering. The first part of the thesis focuses on the HDR images that concurrently contain detailed information from the very dark shadows to the brightest areas in the scenes. One of the main contributions presented in this thesis is the development of a unified reconstruction algorithm for spatially variant exposures in a single image. This method is based on a camera noise model, and it simultaneously resamples, reconstructs, denoises, and demosaics the image while extending its dynamic range. Furthermore, the HDR reconstruction algorithm is extended to adapt to the local features of the image, as well as the noise statistics, to preserve the high-frequency edges during reconstruction. In the second part of this thesis, the research focus shifts to the acquisition, encoding, reconstruction, and rendering of light field images and videos in a real-time setting. Unlike traditional integral photography, a light field captures the information of the dynamic environment from all angles, all points in space, and all spectral wavelength and time. This thesis employs sparse representation to provide an end-to-end solution to the problem of encoding, real-time reconstruction, and rendering of high dimensional light field video data sets. These solutions are applied on various types of data sets, such as light fields captured with multi-camera systems or hand-held cameras equipped with micro-lens arrays, and spherical light fields. Finally, sparse representation of light fields was utilized for developing a single sensor light field video camera equipped with a color-coded mask. A new compressive sensing model is presented that is suitable for dynamic scenes with temporal coherency and is capable of reconstructing high-resolution light field videos.
Book Synopsis Night and Low-Light Techniques for Digital Photography by : Peter Cope
Download or read book Night and Low-Light Techniques for Digital Photography written by Peter Cope and published by Amherst Media. This book was released on 2005-12-01 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The techniques illustrated in this handbook inspire photographers to take photographs when they would otherwise put their camera away—in low-light and nighttime situations. A comprehensive discussion of color and tone teaches photographers how to change their overall perceptions in low-light environments and adjust their exposure settings and filters to suit a variety of light levels. The most adverse lighting situations are covered, such as floodlit cityscapes, lightning, sunsets, stage shows, and fireworks. Tips on taking advantage of the digital environment's ability to manipulate and enhance low-light images both during and after the photo shoot are offered and technical information on both cameras and the latest software is discussed.
Book Synopsis Capture the Light by : Steve Meltzer
Download or read book Capture the Light written by Steve Meltzer and published by Sterling Publishing Company, Inc.. This book was released on 2008 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn all about the color, direction, and quality of natural light and how to adjust lighting to flatter the subject. Find out about the best lighting strategies for portraits, close-ups, interiors, performances, and outdoor occasions.
Book Synopsis Exposure and Lighting for Digital Photographers Only by : Michael Meadhra
Download or read book Exposure and Lighting for Digital Photographers Only written by Michael Meadhra and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even with digital cameras and automatic exposure, lighting and exposure remain the most difficult element to master in the quest for quality photography. This book, written by a professional photographer for photographers, provides real-world advice to help you achieve true creative control over lighting and exposure. Discover how to take your digital photos to the next level with the scores of lighting diagrams, techniques, and stunning full-color photographs. Order your copy today!
Download or read book Using LYTRO ILLUM written by Josh Anon and published by Josh Anon. This book was released on 2014-09-07 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using LYTRO ILLUM provides a comprehensive overview of the Lytro ecosystem. Endorsed by Lytro, Inc., this book covers everything from what the light field is to how to take advantage of the Lytro button while shooting to how to edit your pictures outside of Lytro Desktop. It's the one guide that will take you from novice to living picture expert! The latest edition covers the new Focus Spread feature in Lytro Desktop.
Book Synopsis Beyond Point-and-Shoot by : Darrell Young
Download or read book Beyond Point-and-Shoot written by Darrell Young and published by Rocky Nook, Inc.. This book was released on 2012-04-23 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two types of new photographers: those satisfied with their low-cost point-and-shoot cameras, and those more enthusiastic photographers who recognize the limitations of low-cost equipment and want to improve their pictures. No longer satisfied with simple snapshots, the enthusiast moves up to a more complex digital camera-one with interchangeable lenses and manual controls-to satisfy their artistic urge. Assuming little to no knowledge of photographic terms, techniques, or technology, Beyond Point-And-Shoot is intended to help smooth the transition from photographic newbie to "real" photographer who is experienced, in-control, and passionate about their craft. Author Darrell Young explores various types of interchangeable-lens cameras, focusing on those with larger imaging sensors, such as digital single-lens reflex (DSLR) cameras. Learn how to get the most out of your camera's automatic and semi-automatic exposure modes, as well as how to move beyond those modes and take full, manual control of your camera. Watch your photography improve as you discover how to apply important photographic principles, such as depth of field, white balance, and metering. With this newfound knowledge you'll move beyond point-and-shoot and begin taking truly great photographs. Other topics include: Camera types Lenses Aperture, shutter speed, and ISO Metering and shooting controls Lens focal lengths and angles of view The histogram Color spaces Sensors Filters Image file formats Managing digital noise And much more!
Book Synopsis Method for Attaining Object-Side Light Fields and Metric Depth Maps from a Commercial Plenoptic Camera by : Weston Aenchbacher
Download or read book Method for Attaining Object-Side Light Fields and Metric Depth Maps from a Commercial Plenoptic Camera written by Weston Aenchbacher and published by . This book was released on 2018 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determining object distances and positions is a common computer vision task. This has obvious use in tasks such as autonomous navigation, robotic object retrieval, and surface profiling. Traditional methods for obtaining scene depth information may require active illumination, multiple cameras, or multiple exposures as hardware parameters are incremented. A plenoptic camera can be used to obtain scene depths and has the advantages of being passive and only requiring a single exposure with a single device. Traditional photographic cameras integrate all light arriving at a single detector element or film location, discarding information about the incidence angle of any individual contribution. In a plenoptic camera, an array of microlenses is placed in front of the image sensor, such that light arriving at a given microlens from different directions will arrive at different detector elements. With this, a signal can be attributed to all rays arriving at the microlens array, for which the assemblage is referred to as a "light field." Common light field operations include the creation multiple digital images from one exposure to simulate the effect of changing the camera's focal length ("digital refocus") and the determination of relative distances to scene objects. Existing light field methods are concerned with the light field within the camera (the "image-side light field"), as this is sufficient for most tasks. In contrast, this thesis describes a method for characterization of the light field external to a plenoptic camera (the "object-side light field") by performing experiments that determine the mapping from object-space rays to image-side light field coordinates. Use of an object-side light field allows for the determination of distances to scene objects in absolute terms, rather than the relative depths commonly obtained with image-side light fields. The object-side light field is obtained by observing the appearance of an occluding edge in the image-side light field as it is translated across the plane of the camera's front lens. Perspective images are created for simulated pinhole apertures at the front lens plane and used to view a patterned target, completing the characterization. In this thesis, descriptions of the characterized object-side light field are provided, offering an intuitive understanding of the structure of the light collected by the plenoptic camera. Demonstrations of common light field operations are provided to confirm that there is no loss of functionality through use of an object-side light field rather than an image-side light field. Simulations confirm that the distance to objects near to the camera can be determined to within 1~mm, with accuracy decreasing as the distance to an object increases.
Book Synopsis Digital Photography Lighting For Dummies by : Dirk Fletcher
Download or read book Digital Photography Lighting For Dummies written by Dirk Fletcher and published by John Wiley & Sons. This book was released on 2010-10-28 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improve your lighting technique to produce better quality photographs Digital Photography Lighting For Dummies features the tools, concepts, and steps you need to give your subjects a high-quality look and feel. Everyone from advanced beginners to aspiring professional photographers will improve their understanding of lighting basics as well as the parts and functions of their camera. Explains the different kinds of lighting that different situations require and guides you through changing the settings on your camera Shows you how to set up equipment to capture the photograph you want with the proper amount of light and shadow Offers information on the latest lighting equipment and accessories Includes techniques and skills used by film photographers like David Bailey, Ansel Adams, and Annie Leibovitz Reach for Digital Photography Lighting For Dummies and take your knowledge of lighting and photography to the next level!
Book Synopsis Exposure Photo Workshop by : Jeff Wignall
Download or read book Exposure Photo Workshop written by Jeff Wignall and published by John Wiley & Sons. This book was released on 2011-06-01 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Named One of Shutterbug Magazines Top Digital Imaging Books of 2008! Capturing an image and getting the right exposure is critical and Jeff Wignall recognizes exposure as the secret for creating an image that captures a vision and shares it with the world. When you apply his techniques with patience, experimentation, and a focus on the outcome, you will begin creating images that reveal not only what you saw, but how you felt when you saw it. In fact according to Shutterbug magazine Exposure Photo Workshop “may be the best book yet written about exposure.” By learning to work with natural light as well as when to use flash you will confidently capture action, night scenes, rainbows, sunsets, and reflections like never before. With stunning images, Jeff Wignall shows you how to perfectly expose pictures in even the most challenging existing light conditions, including poor weather, using a flash, and even a section guiding you through using multiple wireless flash units. You can upload your own images to Photoworkshop.com and get feedback from other photographers. Wignall starts by explaining the fundamentals of exposure and why it’s important. This leads into learning the basics of exposure controls. By the end of chapter 2, you will know how to control the exposure on your point-and-shoot or digital SLR camera. Chapter 3 walks readers through measuring light using just about any light meter and Chapter 4 delves into lens apertures and depth of field. The focus moves to shutter speed and subject motion. After Chapter 6, you’ll have the knowledge and confidence to turn off your camera’s automatic settings and take manual control. Wignall then examines natural light exposures, discussing the intricacies of light quality, light direction, and time of day. As you approach more advanced exposure options, you’ll need the troubleshooting advice provided in Chapter 8, covering difficult situations such as metering challenges, handling contrast, and creating dramatic silhouettes. With more advanced techniques mastered, you can then approach night and low-light conditions and then examine special considerations such as the weather and natural phenomena. The book finishes strong with a comprehensive look at all things flash photography.
Download or read book Light and Lens written by Robert Hirsch and published by Taylor & Francis. This book was released on 2012 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hirsch presents an introductory book that clearly and concisely provides the instruction and building blocks necessary to create thought-provoking digitally based photographs. It is an idea book that features numerous classroom-tested assignments and exercises from leading photographic educators.
Book Synopsis Understanding Photography by : Sean T. McHugh
Download or read book Understanding Photography written by Sean T. McHugh and published by No Starch Press. This book was released on 2018-12-11 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive, heavily illustrated volume introduces the concepts and techniques of digital image capture, including exposure, composition, histograms, depth of field, advanced lighting, lens filters, shutter speed, and autofocus. Learn the core concepts and techniques you need to know to take better photos, from choosing the best lens for your stylistic goals to selecting the right camera settings for different lighting conditions. With clear explanations and highly visual examples, Sean T. McHugh takes you from basic concepts like exposure and depth of field to more advanced topics, such as how camera lenses and sensors capture light to produce images. You'll learn not only which camera settings to use in different situations but also the reasons why. Learn how to: - Choose lenses that give greater control over perspective - Minimize image noise by understanding how digital sensors work - Get the exposure you want even in fog, mist, or haze - Improve hand-held shots by mastering shutter speed and autofocus - Use tripods, lens filters, and flash to enhance image capture Whether you want to understand digital photography at a deeper level or simply want to take better photos, Understanding Photography will help you get the most out of your camera.
Book Synopsis The Complete Guide to Light & Lighting in Digital Photography by : Michael Freeman
Download or read book The Complete Guide to Light & Lighting in Digital Photography written by Michael Freeman and published by Sterling Publishing Company, Inc.. This book was released on 2007 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to lighting techniques in digital photography covering topics including working with artificial light and daylight.
Download or read book Image and Graphics written by Yao Zhao and published by Springer Nature. This book was released on 2019-11-27 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume set LNCS 11901, 11902, and 11903 constitutes the refereed conference proceedings of the 10thth International Conference on Image and Graphics, ICIG 2019, held in Beijing, China, in August 2019. The 183 full papers presented were selected from 384 submissions and focus on advances of theory, techniques and algorithms as well as innovative technologies of image, video and graphics processing and fostering innovation, entrepreneurship, and networking.