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.
Results
Showing 1 to 20 of 394 for “"image-based"”.
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Image-based Material Editing
Photo editing software allows digital images to be blurred, warped or re-colored at the touch of a button. However, it is not currently possible to change the material appearance of an object except by painstakingly painting over the appropriate pixels. Here we present a set of methods for …
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Image Based View Synthesis
This dissertation deals with the image-based approach to synthesize a virtual scene using sparse images or a video sequence without the use of 3D models. In our scenario, a real dynamic or static scene is captured by a set of un-calibrated images from different viewpoints. After automatically …
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Image-based visual hulls
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Image-based Vehicle Localization
… result [1]. In this thesis, we propose a novel image-based vehicle localization by utilizing vision sensor and computer vision techniques to extract vehicle surrounding text landmarks and to locate the vehicle position. Firstly, we explore the feasibility of image-based vehicle localization by …
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High-Fidelity Image -Based Modeling
Image-based modeling is the process of automatically acquiring geometric object and scene models from photographs or video clips. This dissertation addresses three core problems in image-based modeling: static scene reconstruction, high-fidelity camera calibration, and dynamic scene reconstruction. …
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Image-based facial expression recognition
… significant since they enhance the established image classification frameworks. The supervised algorithms are general and can be applied to any image categorization task.
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Real-time image-based cell identification
… which allow identifying different cell types, based on bright-field images from RT DC. In particular, I introduce algorithms that are fast enough to be applied in real-time during the measurement (at >1000 cells/s), which can be used for image-based cell sorting. The performance of the …
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Mathematical Methods for Image Based Localization
… is, where am I? In this thesis a purely image based approach is proposed to solve this problem. In order to create a complete image based system, there are many subproblems that have to be addressed. The localization problem can also be solved in other ways, for example, with a GPS. Two …
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Image-based Fine-scale Infrastructure Monitoring
… dissertation proposes a remote sensing approach based on a photogrammetric system capable of three-dimensional reconstruction. The proposed system is low-cost, consists of off-the-shelf components, and is capable of reconstructing objects or surfaces with homogeneous texture. The scientific …
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Image based rendering using algebraic techniques
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Image-Based Geotechnical Constitutive Model Parameter Calibration
… models. One approach is to use a work-based objective function in which the difference between the external work (work transferred to the sample by boundary tractions and stresses) and internal work (work dissipated by the sample in strain) is minimised through the optimisation of the …
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Path planning for image based visual servoing
… connected disciplines like projective geometry, image processing, robotics and non-linear control. More specifically the work addresses the problem to control a robotic manipulator through one of the largely used Visual Servoing techniques: the Image Based Visual Servoing (IBVS). In Image Based …
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Image-Based Analysis of Fungal-Damaged Soybeans
… and Fusarium spp. 95%. A multimedia computer-based soybean visual information and grading system was developed. The research concluded that fungal-damaged soybean seeds can be characterized based on their images.
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Weak Calibration and Image-Based Rendering Algorithms
… least-squares methods to our image-based rendering approach. The point-based PIV involves equations with bilinear or higher-order data dependencies and we show how to efficiently estimate its parameters by adapting Leedan's and Meer's technique for bilinear estimation problems.
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Robust and efficient image-based 3D modeling
… a robust and efficient 3D reconstruction system based on stereo vision. Stereo vision is known to be quite fragile in practice due to specular highlights, lack of texture, lighting variations, image blurring, etc. In this dissertation, I focus on exploiting the relationships between illuminants, …
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IDeixis : image-based deixis for recognizing locations
… from camera-equipped mobile devices using image-based web search. This is an image-based deixis capable of pointing at a distant location away from the user's current location. We demonstrate our approach on an application allowing users to browse web pages matching the image of a nearby …
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Image-based deep learning approaches for plant phenotyping
… localizing and quantifying plant features based on agricultural images. This dissertation describes the development and evaluation of state-of-the-art deep learning approaches for several plant phenotyping tasks, including characterization of rice root anatomy based on microscopic root …
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Image-Based Spatial Change Detection Using Deep Learning
Image change detection is an invaluable tool in monitoring and understanding the built and physical environments and supporting decision-making. Many recent research approaches for automatic change detection have been based on Deep Learning (DL) techniques and especially on variations of …
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