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 21 for “"Stereovision"”.
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Stereovision Correction Using Modal Analysis
Presently, aerial photography remains a popular method for surveillance of landscapes, and its uses continually grow as it is used to monitor trends in areas such as plant distribution and urban construction. The use of computer vision, or more specifically stereo vision, is one common method of …
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Single-lens multi-ocular stereovision using prism
A novel single-lens stereovision system using prism is introduced. An image captured by this system can be split into multiple different sub-images which can be considered as the images captured by a group of virtual cameras generated by the prism. Hence this system can simultaneously obtain …
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Effects of stereovision and graphics overlay on a teleoperator docking task
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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A coordinated UAV deployment based on stereovision reconnaissance for low risk water assessment
… of two UAVs. Two identical cameras utilising a stereovision approach were developed for capturing three-dimensional information of the wave distribution in a non-invasive manner. As with most innovations, laboratory based testing was necessary before a full-scale implementation can be attempted. …
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Monocular vision for collision avoidance in vehicles
… Inc. on the potential substitution of stereovision systems in car automation with monocular vision systems. The monocular system pairs a camera and passive lens with an active lens. Most active lenses require linear actuating systems to adjust the optical parameters of the system but …
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Design of a Helicopter Deployable Ground Robotic System for Hazardous Environments
… real-time during a mission through the use of a stereovision system carried on the helicopter, which station-keeps above the ground robot. The algorithm simulates the robot on the terrain and presents the best feasible path to the operator to aid in teleoperated robot navigation. Simulations of …
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Using Texture Features To Perform Depth Estimation
… Out of the many 3D vision techniques used, stereovision is a field where a lot of research is being done to solve this kind of problem. Human vision plays an important part behind the inspiration and research performed in this field. Stereovision gives a very high spatial resolution of depth …
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Development of teat sensing system for automated milking
… a multimodal vision system combining optical stereovision and thermal imaging is developed. The overall system is evaluated from the point of view of accuracy and robustness. Laboratory tests have shown that stereovision can rapidly locate teat three dimensional position coordinates, however …
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Applications of Stereoscopic Vision to Agriculture
Two applications of stereovision for automatic guidance of agricultural vehicles were conceived. The first one employed disparity images together with regression analysis to find the vehicle's directrix. Problems appeared with poor correlated lines and vertical lines. A modification in the …
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Comparison of Three Dimensional Measurement Accuracy Using Stereo Vision
… review. In this thesis, two parameters of the stereovision system have been used to test the measuring results: the distance between the cameras and the distance between the cameras and the object. Experimental results show that when the object is close to the cameras (about 912mm), three …
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Plant Specific Direct Chemical Application Field Robot
… field. The developed robot was equipped with a stereovision with processing algorithms to detect and identify individual weeds in the field image and the custom designed end effector with a robotic arm to carry out plant specific direct application. The developed vision system with the …
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Stereo Vision Based Aerial Mapping Using GPS and Inertial Sensors
… system includes a Point Grey Research Bumblebee stereovision camera, a Versalogic PC104 computer, a PCB designed for sensor acquisition and power considerations, and a self contained battery. The entire system is all contained within a 9.5â x 5â x 6.5â aluminum enclosure and weighs approximately …
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Distributed Sensing Testbed Development for Wavelet Based Global Map Estimation
… a wide array of sensors, including LIDAR and stereovision cameras, and is designed with ample space to allow the mounting of any future data gathering devices. The platform has already taken a central role in the development of new algorithms for map creation with modern sensing technology, …
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Applications of Computer Vision Technologies of Automated Crack Detection and Quantification for the Inspection of Civil Infrastructure Systems
… and depth estimation using wearable glasses with stereovision cameras. From the realistic field applications of computer vision techniques, a novel self-adaptive image-processing algorithm was developed using a series of morphological transformations to connect fragmented crack pixels in digital …
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Vision Based Localization of Drones in a GPS Denied Environment
In this thesis, we build a robust end-to-end pipeline for the localization of multiple drones in a GPS-denied environment. This pipeline would help us with cooperative formation control, autonomous delivery, search and rescue operations etc. To achieve this we integrate a custom trained YOLO (You …
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Brain stimulation reveals neural mechanisms of stereopsis
Stereopsis is critical for interaction with our environment. However, binocular disparity in natural images is often ambiguous and this makes it difficult to establish a binocular correspondence solution. In my thesis, I focus on both the challenges of this problem and solutions that the brain …
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Computer Generation of Integral Images using Interpolative Shading Techniques
… artificial 3D images that duplicates the human stereovision has been ongoing for hundreds of years. What has taken millions of years to evolve in humans is proving elusive even for present day technological advancements. The difficulties are compounded when real-time generation is contemplated. …
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Design and Characterization of a Current Assisted Photo Mixing Demodulator for Tof Based 3d Cmos Image Sensor
… 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 measurement are available …
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Structural Health Monitoring and Seismic Response Assessment of Civil Infrastructure using Target-Tracking Digital Image Correlation
… has been done in both image correlation and stereovision, only very few studiesconsidered large-scale 3D experimental validation and verification (V&V) viacomparison with mechanical sensors while focused on civil structures. Therefore, one ofthe major objectives of this dissertation is to …
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Behaviour of ultra high performance fibre reinforced concrete subjected to static and impact loads
… measurement surface and assessed using 2D and 3D stereovision systems under impact loads. The spatial resolution and sub-pixel accuracy of the proposed method was assessed and compared to traditional speckle pattern techniques for DIC measurements. Additionally, the results of an extensive …
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