Browsing Theses and dissertations by Title
Now showing items 661-680 of 1001
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Object-background segmentation from video
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)Fast and accurate algorithms for background-foreground separation are an essential part of <p/>any video surveillance system. GMM (Gaussian Mixture Models) based object segmentation <p/>methods give accurate results for ... -
Objective evaluation of speech quality of text-to-speech (TTS) synthesis systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2013)Since the use of Text-to-Speech (TTS) technology is increasing, there is a high demand of TTS system that can produce natural and intelligible voice in any environments. In order to improve speech synthesis system, synthesized ... -
Oblique projection operator
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)This thesis presents the understanding usefulness of Oblique Projector in signal processing like signal recovery, signal representation and reconstruction. This thesis also presents the different recursive oblique projector ... -
On curve reconstruction in Riemannian Manifolds: ordering motion frames
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)In this work we generalize the computational geometric curve reconstruction approach to curves embedded in Riemannian manifolds. We prove that the minimum spanning tree, given a sufficiently dense sample, correctly ... -
On designing DNA codes and their applications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2019)Bio-computing uses the complexes of biomolecules such as DNA (Deoxyribonucleic acid), RNA (Ribonucleic acid) and proteins to perform the computational processes for encoding and processing the data. In 1994, L. Adleman ... -
On Field Soil Testing using Wireless Sensor Network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)Soil nutrients analysis is an essential part of sustainable and productive agriculture.In order to get the effective and potential yield of crops, soil health card containingthe detailed report of soil fertility status are ... -
On heterogeneous distributed storage systems: bounds and code constructions
(Dhirubhai Ambani Institute of Information and Communication Technology, 2019)In Distributed Storage Systems (DSSs), usually, data is stored using encoded packets on different chunk servers. In this thesis, we have considered heterogeneous DSSs in which each node may store a different number of ... -
On insider attack in distributed file systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Due to heavy use of internet, mobiles, sensors etc. Data is growing rapidly day-by-day. However traditional database systems fail to store such a huge semi structured or unstructured data which raises the need for distributed ... -
On large scale near-independent blind source separation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)The thesis addresses Blind Source Separation (BSS) in Large Scale (LS) and near-Independent (nI) sources scenario. The large scale in BSS imply number of unknown sources ranging from 15 to 140, so that the corresponding ... -
On Minimality Attack in Privacy Preserving Data Publishing
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)"Data Publishing has become much concern in recent yerars for protecting the individual privacy. Information about the individuals is collected from various domain and is being published public. We can extract lot of wealth ... -
On path complexities of heapsort algorithm and the class stack
(Dhirubhai Ambani Institute of Information and Communication Technology, 2007)A measure of program complexity, called Path Complexity, based on the number of program execution paths as a function of the input size n, is proposed in [AJ05]. This measure can be used to compare the complexity of two ... -
On size balanced binary search trees
(Dhirubhai Ambani Institute of Information and Communication Technology, 2009)History independent data structures are useful when security and privacy are of primary concern. Even if an adversary gets copy of the data structure, he cannot obtain any additional information beyond its content. Important ... -
On the efficacy of deep image denoising for computer vision applications
(2021)Image denoising is a process of inverse reconstruction where the original image is reconstructed from its noisy observations. Several deep learning models have been developed for image denoising. Usually the performance ... -
On wavelets and fractal modulation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2004)The thesis considers a communication problem - that of communicating over a channel having simultaneously unknown bandwidth and unknown duration. As a solution to this problem, the thesis looks into a modulation scheme - ... -
Online learning to rank
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)"Ranking of the documents has been always a prominent area of research in IR community. Most of the techniques for learning to rank evolved around Cranfield paradigm, in which supervised and semi-supervised machine learning ... -
Ontology alignment based support for searching LOD-datasets using SPARQL query
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)The Linked Open Data (LOD) cloud is rapidly becoming the largest interconnected source of structured data on the web. Due to distributed nature of LOD and a growing number of ontologies and vocabularies used in LOD ... -
Ontology development and query execution for an agro-advisory system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2014)In agriculture domain, farmers have queries regarding crop, soil, climate, cultivation process, disease, and pest. They express their queries in a natural language which are usually answered by agriculture experts. Due to ... -
Ontology learning from relational database and reuse it with popular vocabularies
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)Ontologies are the web documents generated by Web Ontology Languages that are used to develop semantic web. Semantic web requires data either in terms of manual creation or through conversion from existing data. A manual ... -
Optical character recognition (OCR) feature extraction and classification
(Dhirubhai Ambani Institute of Information and Communication Technology, 2019)Optical character recognition (OCR) [6] is a process of digitizing an image or document containing text. In the OCR system, we do the classification of optical patterns contained in a digital image corresponding to ... -
Optical wireless sensor network design for a conducting chamber
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)Now a day’s majority of the wireless sensor networks (WSNs) are based on Radio Frequency (RF) communication technology. But RF when used in an environment like that of metallic, conducting chamber exhibits large amount of ...