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 20 of 51 for “"Shutter"”.
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Shutter speed measurement techniques
Thesis (M.A.)--Boston University, 1949. This item was digitized by the Internet Archive.
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Vibration Extraction Using Rolling Shutter Cameras
… This study employs a consumer level rolling shutter camera for extracting main frequency components of small vibrations. A rolling shutter camera exposes continuously over time on the vertical direction of the sensor, and produces images with shifted rows of objects. We utilize the rolling …
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The Kerr Cell as a Microwave Frequency Optical Shutter
Made available in DSpace on 2014-12-04T21:02:54Z (GMT). No. of bitstreams: 1 0020855.pdf: 5302655 bytes, checksum: a15f59abfa52df4f459a1a2fc477376b (MD5) Previous issue date: 1957
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Development and validation of an Active Grille Shutter testing platform
… for testing the functionality of Active Grille Shutters (AGS) and radiators in wind tunnels. Additionally, a generic pressure plate is designed to mimic commercial radiators, and a testing procedure is developed for AGS testing. Together, they provide a comprehensive and consistent platform for …
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Conceptual engineering designs for a mechanical shutter, a medical room door, and a water shutter for a fission converter-based boron neutron capture therapy medical facility
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
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Design, construction and installation of a mechanical shutter and design of a medical room door support system for BNCT facility at the MIT's reactor
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Evaluation and adaptation of a non-single-lens reflex camera for users with manual impairments
… problems reported by the subjects show that the shutter release control and the camera grip are the two major accessibility barriers of the product. Four new camera models were developed: three with gripping aids (rubber pads, a thumbsleeve, or a handle) and one with a remote wired shutter …
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Towards a Fast, Robust and Accurate Visual-Inertial Simultaneous Localization and Mapping System
… handling SLAM-related challenges (e.g., rolling shutter distortion) and applications (e.g., smooth path planning). Extensive experiments validate its state-of-the-art accuracy and real-time computational efficiency. In the third part, we turn our attention to rolling shutter distortion with the …
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Engineering design of a fission converter-based epithermal beam for neutron capture therapy
… includes loss of flow, loss of flow with shutter failure (converter scram) and loss of coolant. Most of these steady state and transient analyses were performed by both analytically and numerically. The results show that the fuel disruption will not occur during credible and incredible …
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Active Control of Camera Parameters and Algorithm Selection for Object Detection
… investigate the effect of camera parameters, shutter speed and voltage gain, on the performance of several popular object detection algorithms, under various illumination conditions. Our experimental results indicate a significant difference in sensitivity of the evaluated algorithms to these …
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Phosphorescence of a Series of Substituted Aceto- and Benzophenones in Crystalline form at Room Temperature
… data were gathered utilizing a rotating can shutter on the same samples, and where possible, lifetimes were calculated.
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The design, construction, and calibration of a generating voltmeter for a two million volt electrostatic accelerator
… accelerator. The voltmeter is a grounded shutter type, the rectified output of which is measured by a vacuum tube voltmeter. The voltmeter was calibrated by known nuclear resonances of fluoride. The calibration showed the meter to be accurate to within five percent at half scale deflation …
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Development of a Full-Field Time-of-Flight Range Imaging System
… image intensifier used as a high speed optical shutter, which is modulated at a slightly different frequency to that of the laser source. The output from the shutter is a low frequency beat signal, which is sampled by a digital video camera. Optical propagation delay is encoded into the phase of …
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Possible Influences of Vowel Tongue Position on Vocal Fold Stiffness
… subject's oral airflow was interrupted with a shutter-valve during vowel productions. Significant differences were found in each of four criterion measures. The trends found supported the hypothesis that vocal fold stiffness decreased from [i] to [^] to [a]. The possibility of the results being …
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Characterizing the perceived quality degradation of still-camera motion blur
… scenes at 1/60-s, 1/30-s, 1/15-s, and 1/8-s shutter speeds, replicated four times. Several spatial image quality metrics (blur size, Subjective Quality Factor, SQF; Modulation Transfer Function ,Area, MTFA; and Equivalent Passband, Ne), derived analytically from the motion data, were used as …
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Near-infrared emission spectroscopy of explosive breakout
… a combination of a rotating filter disk and shutter to gate the exposure after the detonation. The spectral range covered in this study included from approximately 880 to 1660 nm. Various spectrometer systems were used that resulted in two ranges of resolution. Notable spectral features were …
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Optical pyrometry for noncontact temperature measurement
… blackbody calibrator is used as a source, and a shutter with a speed of 4 ms is used to simulate the particle dropping by the optical sensing port. The pyrometer has been calibrated for a particle temperature range of 650°C - 1200°C.
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Identifying short-lived fission products by delayed gamma-ray emission
… products. The first method used the beam port shutter and allowed for longer counting and irradiation times, but was unsuitable for examining fission products with half-lives below 10 seconds. The on/off method used a cycle of equal irradiation and counting times of one minute. The second …
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Physics and Algorithms in Time of Flight Based Computational Imaging
… Gate Arrays (FPGA), and a synchronised global shutter CMOS camera. Both projects are aimed at solving practical problems in their respective areas. Automatic calibration aims to improve the fidelity of images by algorithmically fixing calibration errors after taking measurements in cameras …
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