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 15 of 15 for “"CMOS image sensor"”.
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A High Dynamic Range CMOS Image Sensor with Adaptive Integration Time Control
… encompasses the development and testing of a CMOS based image sensor. The imaging process consists of the integration of the photocurrent generated by incident light in each pixel. The implementation of a concept for adaptive regulation of the local integration time allows imaging of high …
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Design and Characterization of a Current Assisted Photo Mixing Demodulator for Tof Based 3d Cmos Image Sensor
… several studies have reported to produce 3D images including stereovision, object distance from vision system and structured light source with high frame rate, accuracy, wide dynamic range, low power consumption and lower cost. Several types of optical techniques for 3D imaging range …
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Current-mode CMOS hybrid image sensor
… making Complimentary Metal-Oxide-Semi conductor (CMOS) image sensor-based cameras indispensable in many modern life devices like cell phones, surveillance devices, personal computers, and tablets. For various purposes wireless portable image systems are widely deployed in many indoor and outdoor …
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Absorption and fluorescence spectroscopic analysis using compact, linear variable filter based, detection platforms
… is demonstrated by the use of a conventional CMOS image sensor in conjunction with the LVF to create the detection element. An LVF-based benchtop detection setup is initially presented followed by its miniaturized successors: compact absorption and fluorescence detection platforms. A series of …
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Development of Optoelectronic Devices and Computational Tools for the Production and Manipulation of Heavy Rydberg Systems
… microcontrollers to read data from a CMOS image sensor illuminated by the diffraction pattern from a Fabry-Perot interferometer, this device can operate with beam powers as low as 3.3 micro-watts, at a fraction of the cost of equivalent products. Computational results are presented …
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Virtual pan-tilt-zoom for a wide-area-video surveillance system
Advancements in the CMOS Image Sensor have enabled very high-performance, high resolution imaging systems to be built at relatively low cost. The availability of high-pixel count video imaging systems that can cover a wide field-of-view enables a surveillance technique called Virtual Pan-Tilt-Zoom. …
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Radiation Damage in CMOS Image Sensors for Space Applications
… such as Complementary Metal Oxide Semiconductor (CMOS) image sensors, affecting their performance over time or causing total failure. The first part of this work investigates a Charge Coupled Device (CCD) style CMOS image sensor designed for TDI (Time Delay and Integration) mode imaging, a mode …
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CMOS digital pixel sensor array with time domain analogue to digital conversion
This thesis presents a digital pixel sensor array, which is the first stage of an ongoing project to produce a CMOS image sensor with on-chip image processing. The analogue to digital conversion is performed at the pixel level, with the result stored in pixel memory. This architecture allows fast, …
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MiniFAST: A Fast and Sensitive Microscope for in vivo Neural Imaging
… slow dynamics (> 1 s) easily captured by most image sensors at frame rates of 30 Hz or less. However, there are many neuroscience applications which would benefit from using other emerging neural indicators, such as fluorescent genetically-encoded voltage indicators (GEVIs) that have faster …
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Generic camera calibration for omnifocus imaging, depth estimation and a train monitoring system
… step toward understanding the process of image formation and devising techniques to invert this process to decipher interesting properties of the imaged scene. In this dissertation, we propose new optically and physically motivated models for achieving state-of-the-art geometric and …
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Entwurf und Modellierung von Multikanal-CMOS-Farbsensoren
Color image acquisition and image processing have become a key in modern data application. In order to provide high quality images, the field of accurate acquisition is most important in respect to all further processing steps. But a whole variety of current image sensors possess incorrect color …
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Micro cameras as adjunct tools in biomedical applications
… component in surgical decision making, and an image is often the first step in both diagnostic and interventional procedures. With the miniaturisation of CMOS image sensors, micro-cameras are being investigated for use in biomedical imaging and the development of biomedically specific sensors …
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Memristive devices and circuits for computing, memory, and neuromorphic applications.
… a system overview of the targeted system (a CMOS-memristor imager system), which provides a the link between the two parts of the thesis. In addition to the original contributions in the area of modelling and characterisation, an overview on the understanding of the memristor element via the …
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From the ocean to the operating room: translating single-sensor spectral imagers to image-guided cancer surgery
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01