Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"Computational photography"”.
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Architectures for computational photography
Computational photography refers to a wide range of image capture and processing techniques that extend the capabilities of digital photography and allow users to take photographs that could not have been taken by a traditional camera. Since its inception less than a decade ago, the field today …
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Computational photography with novel camera sensors
In this thesis, two computational camera designs are presented. They target two major goals in computational photography. high dynamic range (HDR) imaging and image superresolution (SR). HDR imaging refers to capturing both bright and dark details in the scenes simultaneously. A modulo camera does …
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Image enhancement methods and applications in computational photography
Computational photography is currently a rapidly developing and cutting-edge topic in applied optics, image sensors and image processing fields to go beyond the limitations of traditional photography. The innovations of computational photography allow the photographer not only merely to take an …
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Coded aperture and coded exposure photography : an investigation into applications and methods
… presents an introduction to the field of computational photography, and provides a survey of recent research. Specific attention is given to coded aperture and coded exposure theory and methods, as these form the basis for the experiments performed.
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Imaging through scattering
… within skin tissue. This method is based on a computational photography technique and coherent illumination. This method can be applied in diagnosis and monitoring of burns, wounds, prostheses and cosmetics. A particularly important application of this technology is analysis of diabetic ulcers, …
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Signed coded exposure sequences for velocity and shape estimation from a single photo
… cameras. The emphasis in this thesis is on the computational aspects of a framework which employs new codes for motion parameter estimation. I demonstrate the ideas on a variety of synthetic images and real-world photographs. I hope the cameras and theory of signed coded exposure will be a new …
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Laser speckle photography for surface tampering detection
… introduce a new imaging technique that combines computational photography and laser speckle imaging. Without requiring controlled laboratory conditions, our method is able to detect surface changes that would be indistinguishable in regular photographs. It is also mobile and does not need to be …
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Multi-view image refocusing
… I then explore the refocus-related principals in computational photography. Based on these studies, I go through our image refocusing project in details and compare the experimental results to other existed approaches. Finally, I proposed some possible future work in this research area.
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Programmable Aperture Photography: An investigation into applications and methods
The fields of digital image processing (DIP) and computational photography are ever growing with new focuses on coded aperture imaging and its real-world applications. Research has shown that coded apertures are far superior to traditional circular apertures for various tasks. A variety of coded …
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Energy-efficient system design for mobile processing platforms
… consumption. A reconfigurable processor for computational photography is presented. An efficient implementation of the 3D bilateral grid structure supports a wide range of non-linear filtering applications, including high dynamic range imaging, low-light enhancement and glare reduction. The …
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Efficient data structures for piecewise-smooth video processing
… the input data. In this thesis, we present two computationally efficient data structures for representing piecewise-smooth visual information and demonstrate how they can dramatically simplify and accelerate a variety of video processing algorithms. We start by introducing the bilateral grid, an …
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Digital Stack Photography and Its Applications
<p>This work centers on digital stack photography and its applications.</p><p>A stack of images refer, in a broader sense, to an ensemble of</p><p>associated images taken with variation in one or more than one various </p><p>values in one or more parameters in system configuration or …
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The sparse fourier transform : theory & practice
… Light fields enable new virtual reality and computational photography applications like interactive viewpoint changes, depth extraction and refocusing. The thesis shows that reconstructing light field images using the Sparse Fourier Transform reduces camera sampling requirements and improves …
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Image editing and interaction tools for visual expression
Digital photography is becoming extremely common in our daily life. However, images are difficult to edit and interact with. From a user's perspective, it is important to interact freely with the images on his/her smartphone or ipad. In this thesis we develop several image editing and interaction …
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Learning Consistent Visual Synthesis
With the rapid development of photography, we can easily record the 3D world by taking photos and videos. In traditional images and videos, the viewer observes the scene from fixed viewpoints and cannot navigate the scene or edit the 2D observation afterward. Thus, visual content editing and …
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Advanced imaging via multiplexed sensing and compressive sensing
… and manipulates the lens aperture for many computational imaging applications. Multiplexed imaging often involves manipulating the incoming light beam on the aperture, which is located inside the lens housing and thus is challenging to access or modulate. In this system, a novel approach is …
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Adapting Single-View View Synthesis with Multiplane Images for 3D Video Chat
<p>Activities like one-on-one video chatting and video conferencing with multiple participants are more prevalent than ever today as we continue to tackle the pandemic. Bringing a 3D feel to video chat has always been a hot topic in Vision and Graphics communities. In this thesis, we have employed …
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Improving Photometric Camera Accuracy and Image Quality in High Dynamic Range Imaging
… This challenge persisted from the era of print photography and continued with the adoption of standard dynamic range (SDR) displays, such as CRT and LCD displays. However, the emergence of high dynamic range (HDR) displays, such as OLED and dual-modulation LCD-LED, has enabled more accurate …
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A Relational Ecology of Photographic Practices: Towards a Non-anthropocentric Approach to Photography
This thesis argues that as photography’s technological basis has become more complex and increasingly detached from human vision, a thicker account of photographic practice that moves away from humanist discourse and single authorship can assist in demonstrating a continuity between film and new …