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 39 for “"ORB"”.
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ORB-based SLAM accelerator on SoC FPGA
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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Orb weaver capture thread biomechanics and evolution
Orb weavers intercept insects using non-hardening bioadhesive droplets, supported by two flagelliform fibers. Droplets contain an adhesive glycoprotein core and aqueous layer that confers hygroscopicity. The first study investigates the durability of these droplets to cycling, or repeatedly …
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Spider's orb web : implications of structural hierarchies to materials-based evolution
Among a myriad of spider web geometries, the orb web presents a fascinating, exquisite example in architecture and evolution. Its structural component, the silk protein, is an exemplary natural material because its superior properties stem intrinsically from the synergistic cooperativity of …
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Structure and Function of the Viscous Capture Spiral and its Relationship to the Architecture of Spider Orb Webs
Spider orb-webs have evolved to intercept prey, absorb and dissipate the kinetic energy from prey impact, and retain prey until a spider can subdue their catch. Orb-web structure and function engages scientists from many disciplines, including engineering, behavior, materials science, ecology, and …
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The Synthetic spider silk fibers spun from Pyriform Spidroin 2, a glue silk protein discovered in orb-weaving spider attachment discs
… Pyriform Spidroin 2 (PySp2), from the golden orb weaver Nephila c/avipes. MS studies support PySp2 is a constituent of the pyriform gland that is spun into attachment discs. Analysis of the PySp2 protein architecture reveals sequence divergence relative to the other silk family members, …
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Political Identity Priming and Own-Race Bias in Caucasian and Hispanic/Latino College Students
Own-race bias (ORB) occurs when individuals exhibit enhanced recognition memory for faces of one’s own race as opposed to faces belonging to other races. Recent research indicates that promoting the salience of shared non-racial identity can foster in-group bias of face recognition for other-race …
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"Foolery, sir, does walk about the orb like the sun": fool-characters and comic dramatic structures in Hamlet, Twelfth night and Troilus and Cressida
The thesis analyses fool-characters and comic structures in Shakespeare's three plays-each play representing a different dramatic genre. The chapter on Hamlet primarily focuses on Hamlet's fool-role originating from his "antic disposition." In Twelfth Night, the study examines the topsy-turvydom …
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Modeling spider webs as multilinked structures using a Chebyshev pseudospectral collocation method
… the most notable of these creations is the orb web. In this thesis we model the essential vibrations of orb webs by first considering a spider web as a multilinked structure of elastic strings. We then solve the associated eigenvalue problem using a Chebyshev pseudospectral collocation …
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Dynamic object tracking and classification from a moving platform
… two open-source algorithms, Mask R-CNN and ORB-SLAM. Mask R-CNN provides instance-level object detection and segmentation, while ORB-SLAM provides keypoint detection, camera tracking, and local mapping. A typical SLAM system assumes a static environment and treats dynamic objects in the …
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Climate variability and extremes in the Okavango River Basin, southern Africa
The Okavango River Basin (ORB) located in southern Africa is a region of highly sensitive and biodiverse ecosystems. It spans Angola, Namibia and Botswana, with the world-famous Okavango Delta located in the latter country. The ecosystems depend on the highly seasonal ORB streamflow, which is also …
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Towards a Visual Simultaneous Localization and Mapping System for Computationally Constrained Systems
… (BRISK) and Oriented FAST and Rotated BRIEF (ORB) feature descriptors are introduced and compared against Speeded Up Robust Features (SURF). BRISK is shown to achieve similar relative pose estimation performance than SURF while being an order of magnitude faster. This work also discusses a …
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Expertise and the Own-Age Bias in Face Recognition
… analogous bias occurs: the own-race bias (ORB). The ORB is the phenomenon that we are more accurate at recognising faces of our own race than those belonging to a different, less familiar race (see Meissner & Brigham, 2001 for review). Perhaps the best known explanation of the ORB is the …
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Spark Gap
… exhibition, "Spark Gap," a sea urchin shaped orb sits atop a tower of ladders. The orb is broken into five sections and reassembled, each fault line occurring along the perfect zigzag line of its cellular structure. On the floor, there is a linen shag rug, marked as if struck by lightning. …
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An Experimental Evaluation of Learning-Based Methods for Loop Closure Detection in Simultaneous Localization and Mapping
… and map estimates. This project evaluates ORB feature extraction and matching, a state-of-the-art technique to detect loop closures, against recently developed learning-based approaches. In particular, our first contribution is to benchmark established techniques based on hand-crafted …
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Braid groups and mapping class groups for 2-orbifolds
The main achievement of this thesis is that pure orbifold braid groups fit into an exact sequence 1$\\rightarrow$ …
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Detekce známých 3D objektů v obraze
… vůči kameře. Metoda využívá význačné body typu ORB a jejich pozici na povrchu obalového kvádru. Za pomoci řešení PnP problému je získána pozice objektu z 2D souřadnic bodu v detekovaném obrazu a 3D souřadnic onoho stejného bodu na obalovém kvádru. Tato práce rozšiřuje metodu detekce jednoduchých …
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Investigating image processing algorithms for provision of information in rock art sites using mobile devices
… (SURF) and Oriented Fast and Rotational Brief (ORB) have been incorporated in a mobile guide prototype and their performance has been evaluated. Performance evaluation has revealed that the ORB algorithm has a better and acceptable performance over the SIFT and SURF algorithms. A user experiment …
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Obstacle and Change Detection Using RGB Cameras
… features are extracted using SIFT, BRISK, and ORB, matched using BF matcher and FLANN based matcher, and filtered through RANSAC Homography estimation in threadpooling architecture for the dataset reduction and detec- tion. In machine learning based approach, features are extracted using four …
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Implicit gaze interaction for information visualization
… and improved accuracy over the state-of-the-art ORB algorithm. To make use of this pipeline in visualization applications, a model is introduced to track a user’s interest in rendered visualization objects by collecting the gaze data and calculating the object group’s interest scores across …
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