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 18 of 18 for “"Range Imaging"”.
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Ultra-wideband phased array radar for short-range imaging applications
… is usually sub-nanosecond, which enable a range resolution of 15 cm or less, when it is being transmitted in free space.
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Resolving Measurement Errors Inherent with Time-of-Flight Range Imaging Cameras
Range imaging cameras measure the distance to objects in the field-of-view (FoV) of the camera, these cameras enable new machine vision applications in robotics, manufacturing, and human computer interaction. Time-of-flight (ToF) range cameras operate by illuminating the scene with amplitude …
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Development of a Full-Field Time-of-Flight Range Imaging System
… stage, capable of determining the intensity and range for every pixel in a scene. The system can be adapted to the requirements of various applications, producing high precision range measurements with sub-millimetre resolution, or high speed measurements at video frame rates. Parallel data …
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Navigation system for a mobile robot incorporating trinocular vision for range imaging
… motion. Software was developed to obtain the range and bearing of the closest obstacle in sight using the trinocular vision system. An operator supervised navigation system was also developed that enabled the navigation of the robot based on the inference from the camera images.
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Improving Photometric Camera Accuracy and Image Quality in High Dynamic Range Imaging
… with the challenge of capturing the vast range of light intensities present in the real world and reproducing them on a medium with much lower dynamic range. This challenge persisted from the era of print photography and continued with the adoption of standard dynamic range (SDR) displays, …
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Opportunities for human-interfaced capacitive sensing in building environments
This work presents several types of novel long-range capacitive sensors that enable better detection of how people move through buildings, presenting ample opportunity for smart lighting and utility control. Various arrangements of sensors on walls, ceilings, and floors turn building surfaces into …
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Remote sensing of submerged objects and geomorphology in continental shelf waters with acoustic waveguide scattering
The long range imaging of submerged objects, seafloor and sub-seafloor geomorphology in continental shelf waters using an active sonar system is explored experimentally and theoretically. A unified model for 3-D object scattering and reverberation that takes into account the coupling between …
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Shape, motion, and inertial parameter estimation of space objects using teams of cooperative vision sensors
… space targets, using information gathered from range imaging sensors. The method exploits two key features of this application: (1) the dynamics of targets in space are highly deterministic and can be accurately modeled; and (2) several sensors will be available to provide information from …
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Development of a three-dimensional camera based on subsampled optical coherence tomography (OCT)
… (OCT) allows label-free, three-dimensional imaging of tissue structure. Current implementations of OCT can either image over long depth ranges at slow imaging speeds, or over limited depth ranges at high speeds. Here, we describe a new OCT paradigm that supports simultaneous high speed and …
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Hidden object doppler : estimating motion, size and material properties of moving non-line-of-sight objects in cluttered environments
… enemy base. State of the art techniques that do range imaging are limited by (i) inability to handle multiple diffused bounces [LIDAR] (ii) Wavelength dependent resolution limits [RADAR] and (iii) inability to map real life objects [Diffused Optical Tomography]. This work presents a framework for …
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3D Camera Based on Gain-Modulated CMOS Avalanche Photodiodes
… community have shown an increasing interest in range imaging due to its potential use in various application domains such as robotics, vehicle safety, gaming, mobile applications as well as many others. Among the diversity of techniques available for range detection, Time-of-Flight (TOF) offers …
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Energy-efficient system design for mobile processing platforms
… 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 processor, implemented using 40 nm CMOS technology, enables real-time processing of HD images, while operating down to …
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Image enhancement methods and applications in computational photography
… of these innovations include high dynamic range imaging, focus stacking, super-resolution, motion deblurring and so on. Although extensive work has been done to explore image enhancement techniques in each subfield of computational photography, attention has seldom been given to study of …
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Design and Control of Versatile High-Speed and Large-Range Atomic Force Microscopes
… are important in nano-technology research for imaging of nanoscale phenomena. Among such tools is the atomic force microscope (AFM) for nanoscale imaging and surface characterization. An AFM scans a micro-cantilever over the sample surface to measure various quantities from the probe-sample …
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High dynamic range video merging, tone mapping, and real-time implementation
Although High Dynamic Range (High Dynamic Range (HDR)) imaging has been the subject of significant research over the past fifteen years, the goal of cinemaquality HDR video has not yet been achieved. This work references an optical method patented by Contrast Optical which is used to capture …
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Analytical camera pose estimation and inverse modelling of high order radial lens distortion polynomials for close range photogrammetry
… photographs is used for metric purposes, small imaging errors can significantly affect the accuracy of derived information. Current analytic a l method for camera pose calibration failed to exploit the intrinsic geometric properties associated with each camera parameter within the structures of …
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Design and Characterization of a Current Assisted Photo Mixing Demodulator for Tof Based 3d Cmos Image Sensor
… analogous to human eyes. Scannerless optical range imaging systems are emerging as an interesting alternative to conventional intensity imaging in a variety of applications, including pedestrian security, biomedical appliances, robotics and industrial control etc. For this, several studies …
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Data processing for 3D time of flight depth imaging
… sensor arrays to provide high resolution 3D imaging. Due to the requirements of the next generation sensors, with pixel counts in excess of 106 (Mega-pixel Arrays), the data capture and processing techniques required to handle the resulting data is becoming more and more important. This work …