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 9 of 9 for “"Bag of visual words"”.
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Natural scene classification, annotation and retrieval. Developing different approaches for semantic scene modelling based on Bag of Visual Words.
With the availability of inexpensive hardware and software, digital imaging has become an important medium of communication in our daily lives. A huge amount of digital images are being collected and become available through the internet and stored in various fields such as personal image …
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Recherche d'images et classification par mots visuels et descripteurs flous
L'approche Bag of Visual Words (ou Bag of Features) décrit une image comme un ensemble de descripteurs locaux à l'aide d'un histogramme. Chaque groupe de l'histogramme représente l'importance d'un motif visuel (appelé mot visuel) dans l'image. Cette méthode d'indexation a été fréquemment utilisée …
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Hybrid models for combination of visual and textual features in context-based image retrieval.
Visual Information Retrieval poses a challenge to intelligent information search systems. This is due to the semantic gap, the difference between human perception (information needs) and the machine representation of multimedia objects. Most existing image retrieval systems are monomodal, as they …
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Object Localization by Combining Shape and Appearance Features
… optimal subwindow that tightly covers the object of interest. Both boundary-based shape and region-based appearance features are important to accurate object localization. For some objects, shape feature might be more important and for some objects, appearance feature might be more important. …
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Building Detection Using a Hybrid Methodology Applied to High Spatial Resolution Aerial Photographs
… aerial photography is an important aspect of geographic information science research. Accurate methodologies can provide scientists with the building information that can be broadly applied in various applications, including land cover change analysis, urban planning regulation, economic …
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Primary/Soft Biometrics: Performance Evaluation and Novel Real-Time Classifiers
The relevance of faces in our daily lives is indisputable. We learn to recognize faces as newborns, and faces play a major role in interpersonal communication. The spectrum of computer vision research about face analysis includes, but is not limited to, face detection and facial attribute …
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Image Retrieval using Landmark Indexing for Indoor Navigation
… approach is proposed for real-time retrieval of images from a large database of overlapping images of an indoor environment. The procedure extracts visual features from images using selected computer vision techniques, and processes the extracted features to create a reduced list of features …
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Content based video retrieval via spatial-temporal information discovery.
… (CBVR) has been strongly motivated by a variety of realworld applications. Most state-of-the-art CBVR systems are built based on Bag-of-visual- Words (BovW) framework for visual resources representation and access. The framework, however, ignores spatial and temporal information contained in …
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Recognising and localising human actions
… research area. Given the growing number of cameras and robots pointing their lenses at humans, the need for automatic recognition of human actions arises, promising Google-style video search and automatic video summarisation/description. Furthermore, for any autonomous robotic system to …