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 12 of 12 for “"Registration techniques"”.
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Hybrid And Hierarchical Image Registration Techniques
A large number of image registration techniques have been developed for various types of sensors and applications, with the aim to improve the accuracy, computational complexity, generality, and robustness. They can be broadly classified into two categories: intensity-based and feature-based …
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EVALUATION OF INTERPOLATION AND REGISTRATION TECHNIQUES IN MAGNETIC RESONANCE IMAGE FOR ORTHOGONAL PLANE SUPER RESOLUTION RECONSTRUCTION
Super resolution reconstruction (SRR) combines several perspectives of an image (typically low resolution) in order to reconstruct a more complete and comprehensive (higher resolution) image. The aim is to use this concept on magnetic resonance imaging (MRI) data, for which the standard is to scan …
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Registration of Arbitrary 3D Point Cloud Using Statistical Head Model
… method which made used of traditional 3D registration techniques (i.e. the Iterative Closest Point algorithm) and a given statistical head mesh model. During the process, missing information in the original head mesh can also be recovered based on the information contained in the …
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Visualisation and manipulation of 3D patient-specific bone geometry using augmented reality
… Each of the AR HMD systems implemented different registration techniques to localize the virtual object in the real-world coordinate system. The registration techniques were user calibration alignment to identified anatomical landmarks, fiducial marker tracking, and markerless tracking. For user …
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Defect detection using 3D computed tomography images and application on nuclear power plants
… 3D CT data. Analyzing the limitations in image registration, a new algorithm is proposed to improve existing image registration techniques to handle significant rotational differences. Additionally, to address the annotated data-related issues in deep learning-based approaches, a semi-automated …
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A Mobile Robotic Computing Platform For Three-dimensional Indoor Mappi
… including evaluation of data correlation and registration techniques. In addition, laser scanner mapping tests, specifications, and capabilities are presented and analyzed. A sample design for converting the final scanned point cloud data to a database is presented and assessed. The results …
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A Novel Multistage Image Registration Technique with Graph-based Region Descriptors
… to the challenges faced by traditional registration techniques. In this work, a novel multistage registration approach is proposed that is resilient to view point differences, image content variations, and lighting conditions. The proposed method is demonstrated to be effective for …
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Airborne monitoring system for in-season agriculture : operational considerations and image processing for wide-area sensing
… of farm plots on the ground requires precise registration of remotely sensed images to ensure accurate crop reflectance measurements. Current and novel multi-modal image registration techniques are tested and found to be inadequate for this application. Instead, a technique using known …
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Feasibility of Spinal Neuronavigation and Evaluation of Registration and Application Error Modalities Using Optical Topographic Imaging
… spinal surgeons has been limited by cumbersome registration protocols, workflow disruption, high capital cost, and questionable quantitative and clinical utility. A novel technique for image-to-patient registration has recently been developed, based on optical topographic imaging (OTI). Whether …
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QUiLT (Quantitative Ultrasound in Longitudinal Tissue Tracking): Stitching 2D images into 3D Volumes for Organ Health Monitoring
… and corners, that are used by conventional image registration techniques. To circumvent this, we propose a set of quantitative features based on the liver vasculature and develop an algorithm to determine their correspondences in 3D space. The features serve as internal landmarks that are used to …
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2D-3D Registration Methods for Computer-Assisted Orthopaedic Surgery
2D-3D registration is one of the underpinning technologies that enables image-guided intervention in computer-assisted orthopaedic surgery (CAOS). Preoperative 3D images and surgical plans need to be mapped to the patient in the operating room before they can be used to augment the surgical …
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Αυτόματη ταυτοποίηση βιομετρικών χαρακτηριστικών : εφαρμογή στα δακτυλικά αποτυπώματα
Η αυτόματη ταυτοποίηση εικόνων δακτυλικών αποτυπωμάτων αποτελεί ένα δύσκολο και πολυδιάστατο πρόβλημα, το οποίο έχει απασχολήσει πλήθος ερευνητών και για το οποίο έχει αναπτυχθεί μεγάλος αριθμός τεχνικών. Η δυσκολία του προβλήματος έγκειται στο γεγονός ότι οι εικόνες των αποτυπωμάτων είναι σε …