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 8 of 8 for “"Pixelation"”.
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Double Alternating Minimization (DAM) for Phase Retrieval in the Presence of Poisson Noise and Pixelation
<p>Optical detectors, such as photodiodes and CMOS cameras, can only read intensity information, and thus phase information of wavefronts is lost. Phase retrieval algorithms are used to estimate the lost phase and reconstruct an accurate effective pupil function, where the squared modulus of its …
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Spatially mapped gene expression analysis from tissue
… into small pieces in a process we call ""tissue pixelation"". The array consists of over five thousand 100um (side length) pyramidal wells with a volume of ~ 175pL each. Following the above tissue transfer step, reagents are loaded onto the chip into the individual wells using a parallel loading …
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Middle infrared beam-steering using liquid crystals for spatial light modulation
… such as aperture size and shape, illumination, pixelation, dead-space and fringing effects, on the performance of a spatial light modulator were investigated. Liquid crystal on silicon implementation was simulated. For $ \lambda= 2.3 \mu$m an efficiency $ > 10 \% $ was attained for angles up to …
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Collecting Collects: The Family Photograph in the British Newspaper
… the effects of newspaper editing techniques of pixelation, masking and silhouettes, and 'Time', which explores the tautological textual descriptions of family photographs and the temporality of photographic captions and headlines. As a result of recent technological advances th~ has been a …
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Synchronous Data Sharing Using Augmented Reality Enabled Handheld Devices
… of visual quality and consistency showed pixelation in the 3D visuals of size 1m x 1m x 1m or larger when viewed from close range of under 50cm from the center of the 3D model. Larger distances of up to 2 meters and varying viewing angles had no effect on the quality. The process of user …
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Automated Segmentation and Analysis of High-Speed Video Phase-Detection Data for Boiling Heat Transfer Characterization Using U-Net Convolutional Neural Networks and Uncertainty Quantification
… impact of discretization errors arising from the pixelation of bubbles is investigated using weighted average percentage relative errors and mean errors under both erosion and dilation conditions. The analysis reveals higher relative uncertainty in contact line density measurements than dry area …
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Statistical modeling of radiation detection and imaging system
… computation load, the non-uniform object-space pixelation (NUOP) approach has been developed to divide the object-space into smaller voxels for target-regions, and into larger voxels in areas that are relatively smooth and/or less important to the reconstruction of the target-regions. This …
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Ultra-High Resolution Environmentally-Friendly Full-Colour Quantum Dot Display Fabricated via Cracking Assisted Transfer Printing
… of the charge transport layers. As for the pixelation process level, a unique pixelization process known as cracking assisted transfer printing was specially designed and developed for pixel sizes ranging from micrometre scale to nanometre scale. This method demonstrated superior and unique …