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.
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Showing 1 to 12 of 12 for “"Pinhole Camera"”.
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Architecture of uncertainty
… given time and place. In this investigation the Pinhole camera was used as a device for capturing photographic images of an urban place. The images produced by the pinhole cameras are representations of the existing place and its experience. The representation of a place generated by the device …
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Design and construction techniques of an American vernacular architect : the work of Dr. Henry Chapman Mercer
… perspective photography techniques utilizing a pinhole camera.
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Designing an alternative project for a product design curriculum for high school students
… with is the design and manufacturing of a unique pinhole camera for a potential business they will be starting. The design challenge takes the student through the design process from the initial concept during brainstorming to a functional prototype. During the process, the students will validate …
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Assessment of radial image distortion and spherical aberration on three-dimensional synthetic aperture particle image velocimetry measurements
… image a synthetic particle volume. An idealized pinhole camera model is used for image formation with distortion and spherical aberration being added with a polynomial model and a Fourier waveform model, respectively. Images from a simulated 5 x 5 camera array are taken, distorted and/or …
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Gesture sensing with flexural ultrasonic transducers
… technologies are explored. Capacitive and pinhole camera approaches for sensing through a mostly metal substrate are presented briefly. The bulk of the thesis focuses on the development of an array of flexural ultrasonic transducers to allow sensing through a fully metal substrate. An …
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Significance of omnidirectional fisheye cameras for feature-based visual SLAM
… important as robots become more ubiquitous. Cameras are powerful sensors for this application due to their low cost and high information density. The task of using camera-based computer vision techniques for navigation is typically referred to as visual simultaneous localization and mapping …
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Model-based metrics for assessing completeness and accuracy for 3D image-based reconstruction methods
… world from a set of unordered images using a pinhole camera model. Due to a wider availability of cameras, the availability of commodity smart phones and tablets equipped with cameras, and enhanced computational power, more attention is now being given to leverage visual data such as still …
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Experimental Studies of Neutral Particle Effects on Edge Transport Barriers in Tokamaks Using the Lyman-alpha Measurement Apparatus
… source, a one-dimensional, absolutely calibrated pinhole camera system was installed on the DIII-D tokamak to measure edge Lyman-alpha (Ly-𝛼) emission. Ly-𝛼 emission from hydrogenic isotopes can be used to infer hydrogenic neutral density and ionization rate profiles. To provide a high spatial …
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Comparison and Investigation of Solar Spectral Irradiance with Solar Aspect Monitor
… data. The Solar Aspect Monitor (SAM) is a pinhole camera on the Extreme-ultraviolet Variability Experiment (EVE) flying on the Solar Dynamics Observatory (SDO). Every 10 seconds SAM projects the solar disk onto the CCD through a metallic filter designed to allow only solar photons shortward …
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Visibility computation through image generalization
… (3) Ray geometry generalization redefines a camera ray as the set of 3D points that project at a given image location; this generalization supports rays that are not straight lines, and enables designing cameras with non-linear rays that circumvent occluders to gather samples not visible from …
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Quantification of lower hybrid wave absorption in the edge of the Alcator C-Mod Tokamak
… were made using a specially designed Ly[alpha] pinhole camera. It utilizes a MgF2 filter and AXUV diode array to measure Ly[alpha] emission from the lower to upper divertor. Edge deposited LHRF power was found to promptly ionize the active divertor plasma in all diverted topologies. This result …
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An Exploration of Visual Sensations: The Use of Depth Perception to Create Pre-Architectural Forms
… this physical abstraction, I created a modified camera obscura. This exploration produced clearly defined images-as-products that were interpreted as pre-architectural forms, which allowed me to translate color abstractions into architectural form studies, or models-as-products. Thus, the …