Interactive Focus of Light Fields for 3D Displays PDF Download
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Author: Karen A. Lin
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
We desire to render scenes onto 3D displays for realtime applications based on image data, targeting media such as streaming multi-view video. The conventional method for rendering would be to first perform 3D reconstruction of the image data, then render the 3D geometric and texture data. However, this approach would be too slow and would lack robustness for complex scenes. Instead, we take an image based approach by using appropriate filtering. Our approach interpolates limited light field data of a 3D scene to simulate depth of field, so that we are able to render new stereo pair views from camera array data in realtime. This allows users to roam in front of a 3D display and still experience seamless natural viewing. We produce these images by convolving 2D image data with an elliptical Gaussian. By shearing the line-like Gaussian to minimize variance over an area-of-interest, the application determines the depth of a user designated pixel. This lets users change focus in realtime, so that their vision does not feel inhibited by the shallower focal depth. Instead, they are able to better focus on the details of their current interest. Our method can be combined with eye trackers and video data for minimally invasive surgery, video conferencing, or any other remote controlled interactive visual applications for enhanced realistic viewing experience.
Author: Karen A. Lin
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
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Book Description
We desire to render scenes onto 3D displays for realtime applications based on image data, targeting media such as streaming multi-view video. The conventional method for rendering would be to first perform 3D reconstruction of the image data, then render the 3D geometric and texture data. However, this approach would be too slow and would lack robustness for complex scenes. Instead, we take an image based approach by using appropriate filtering. Our approach interpolates limited light field data of a 3D scene to simulate depth of field, so that we are able to render new stereo pair views from camera array data in realtime. This allows users to roam in front of a 3D display and still experience seamless natural viewing. We produce these images by convolving 2D image data with an elliptical Gaussian. By shearing the line-like Gaussian to minimize variance over an area-of-interest, the application determines the depth of a user designated pixel. This lets users change focus in realtime, so that their vision does not feel inhibited by the shallower focal depth. Instead, they are able to better focus on the details of their current interest. Our method can be combined with eye trackers and video data for minimally invasive surgery, video conferencing, or any other remote controlled interactive visual applications for enhanced realistic viewing experience.
Author: Achintya K. Bhowmik
Publisher: John Wiley & Sons
ISBN: 111870620X
Category : Technology & Engineering
Languages : en
Pages : 441
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Book Description
How we interface and interact with computing, communications and entertainment devices is going through revolutionary changes, with natural user inputs based on touch, voice, and vision replacing or augmenting the use of traditional interfaces based on the keyboard, mouse, joysticks, etc. As a result, displays are morphing from one-way interface devices that merely show visual content to two-way interaction devices that provide more engaging and immersive experiences. This book provides an in-depth coverage of the technologies, applications, and trends in the rapidly emerging field of interactive displays enabled by natural human-interfaces. Key features: Provides a definitive reference reading on all the touch technologies used in interactive displays, including their advantages, limitations, and future trends. Covers the fundamentals and applications of speech input, processing and recognition techniques enabling voice-based interactions. Offers a detailed review of the emerging vision-based sensing technologies, and user interactions using gestures of hands, body, face, and eye gazes. Discusses multi-modal natural user interface schemes which intuitively combine touch, voice, and vision for life-like interactions. Examines the requirements and technology status towards realizing “true” 3D immersive and interactive displays.
Author: Weitao Song
Publisher: Springer Nature
ISBN: 9813365498
Category : Computers
Languages : en
Pages : 158
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Book Description
This book constitutes selected and revised papers from the First International Conference on VR/AR and 3D Displays, ICVRD 2020, held in Hangzhou, China, in December 2020. The 12 full papers presented were thoroughly reviewed and selected from 29 submissions. The papers present recent serearch on virtual reality, augmented reality, 3D displays and related topics, including but not limited to human-computer interaction, near-eye displays, naked eye 3D displays, modeling, simulation, animation, and applications.
Author: Frederic Dufaux
Publisher: John Wiley & Sons
ISBN: 1118583574
Category : Science
Languages : en
Pages : 479
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Book Description
With the expectation of greatly enhanced user experience, 3D video is widely perceived as the next major advancement in video technology. In order to fulfil the expectation of enhanced user experience, 3D video calls for new technologies addressing efficient content creation, representation/coding, transmission and display. Emerging Technologies for 3D Video will deal with all aspects involved in 3D video systems and services, including content acquisition and creation, data representation and coding, transmission, view synthesis, rendering, display technologies, human perception of depth and quality assessment. Key features: Offers an overview of key existing technologies for 3D video Provides a discussion of advanced research topics and future technologies Reviews relevant standardization efforts Addresses applications and implementation issues Includes contributions from leading researchers The book is a comprehensive guide to 3D video systems and services suitable for all those involved in this field, including engineers, practitioners, researchers as well as professors, graduate and undergraduate students, and managers making technological decisions about 3D video.
Author: Ana Paula Cláudio
Publisher: Springer
ISBN: 3030122093
Category : Computers
Languages : en
Pages : 393
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Book Description
This book constitutes thoroughly revised and selected papers from the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2017, held in Porto, Portugal, February 27 - March 1, 2017. The 18 thoroughly revised and extended papers presented in this volume were carefully reviewed and selected from 402 submissions. The papers contribute to the understanding of relevant trends of current research on image and video formation, preprocessing, analysis and understanding; motion, tracking and stereo vision; computer graphics and rendering; data visualization and interactive visual data analysis; agent-based human-robot interactions; and user experience.
Author: Francisco R. Ortega
Publisher: CRC Press
ISBN: 1482216957
Category : Computers
Languages : en
Pages : 784
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Book Description
This book addresses the new interaction modalities that are becoming possible with new devices by looking at user interfaces from an input perspective. It deals with modern input devices and user interaction and design covering in-depth theory, advanced topics for noise reduction using Kalman Filters, a case study, and multiple chapters showing hands-on approaches to relevant technology, including modern devices such as the Leap-Motion, Xbox One Kinect, inertial measurement units, and multi-touch technology. It also discusses theories behind interaction and navigation, past and current techniques, and practical topics about input devices.
Author: Rolf R. Hainich
Publisher: CRC Press
ISBN: 131535036X
Category : Computers
Languages : en
Pages : 474
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Book Description
In the extensive fields of optics, holography and virtual reality, technology continues to evolve. Displays: Fundamentals and Applications, Second Edition addresses these updates and discusses how real-time computer graphics and vision enable the application and displays of graphical 2D and 3D content. This book explores in detail these technological developments, as well as the shifting techniques behind projection displays, projector-camera systems, stereoscopic and autostereoscopic displays. This new edition contains many updates and additions reflecting the changes in fast developing areas such as holography and near-eye displays for Augmented and Virtual reality applications. Perfect for the student looking to sharpen their developing skill or the master refining their technique, Rolf Hainich and Oliver Bimber help the reader understand the basics of optics, light modulation, visual perception, display technologies, and computer-generated holography. With almost 500 illustrations Displays will help the reader see the field of augmentation and virtual reality display with new eyes.
Author: Vincent Toal
Publisher: CRC Press
ISBN: 1000785629
Category : Science
Languages : en
Pages : 449
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Book Description
This fully updated second edition of Introduction to Holography provides a theoretical background in optics and holography with a comprehensive survey of practical applications. It is intended for the non-specialist with an interest in using holographic methods in research and engineering. The text assumes some knowledge of electromagnetism, although this is not essential for an understanding of optics, which is covered in the first two chapters. A descriptive approach to the history and principles of holography is followed by a chapter on volume holography. Essential practical requirements for successful holographic recording are explained in detail. Recording materials are considered with detailed discussions of those in common use. Properties peculiar to holographically reconstructed images are emphasised as well as applications for which holography is particularly suitable. Mathematical tools are introduced as and when required throughout the text with important results derived in detail. In this new edition, topics such as photopolymers, dynamic holographic displays, holographic optical elements, sensors, and digital holography are covered in greater depth. New topics have been added, including UV and infrared holography, holographic authentication and encryption, as well as particle beam, X-ray, and acoustic holography. Numerical problems are provided at the end of each chapter. This book is suitable for undergraduate courses and will be an important resource for those teaching optics and holography. It provides scientists and engineers with knowledge of a wide range of holographic applications in research and industry, as well as an understanding of holography’s potential for future use.
Author: Jin Li
Publisher: Springer Nature
ISBN: 3031458443
Category : Science
Languages : en
Pages : 147
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Book Description
This book presents recent advances in three-dimensional (3D) imaging and display frameworks, encompassing three categories of 3D imaging and display technologies. The first category is nonphotorealistic 3D approaches based on conventional optical cameras to implement 3D stereoscopic observation of a scene. In the context of nonphotorealistic 3D imaging and reconstruction systems, the authors introduce general principles and also demonstrate camera calibration for 3D imaging, smart cameras, and full-link imaging methods using the optical modulation transfer function to improve imaging quality in conventional cameras. The second category is based on light-ray light field technology to achieve photorealistic 3D imaging and displays. In the context of light-ray light field systems, two approaches capable of light-ray light field 3D imaging by utilizing a camera array or a lens array are demonstrated. Accordingly, light-ray light field display approaches comprising head-mounted displays and integral displays are also introduced. The third category is also photorealistic 3D imaging and display technology, which is based on holography (i.e., diffraction or wavefront light field). In the corresponding holographic displays, the authors introduce 3D holographic displays from three elements: algorithms, devices, and systems, involving fast hologram generation algorithms, wide-viewing-angle display systems, and metasurface holography, etc. Including an investigative roadmap for future progress in optical imaging and 3D display systems, this book is essential reading for scientists and engineers in academia and industry who are interested in next-generation imaging and display concepts for 3D visual sensing systems.
Author: Shuvra S. Bhattacharyya
Publisher: Springer
ISBN: 331991734X
Category : Technology & Engineering
Languages : en
Pages : 1203
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Book Description
In this new edition of the Handbook of Signal Processing Systems, many of the chapters from the previous editions have been updated, and several new chapters have been added. The new contributions include chapters on signal processing methods for light field displays, throughput analysis of dataflow graphs, modeling for reconfigurable signal processing systems, fast Fourier transform architectures, deep neural networks, programmable architectures for histogram of oriented gradients processing, high dynamic range video coding, system-on-chip architectures for data analytics, analysis of finite word-length effects in fixed-point systems, and models of architecture. There are more than 700 tables and illustrations; in this edition over 300 are in color. This new edition of the handbook is organized in three parts. Part I motivates representative applications that drive and apply state-of-the art methods for design and implementation of signal processing systems; Part II discusses architectures for implementing these applications; and Part III focuses on compilers, as well as models of computation and their associated design tools and methodologies.
