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Articles 31 - 60 of 336
Full-Text Articles in Electrical and Computer Engineering
Homogeneous Transcoding Of Hevc (H.265), Ninad Gorey
Homogeneous Transcoding Of Hevc (H.265), Ninad Gorey
Electrical Engineering Theses - Archive
Video transcoding is an essential tool to promote inter-operability between different video communication systems. This thesis presents a cascaded architecture for homogeneous transcoding of High Efficiency Video Coding. Cascaded Transcoding model decodes the input video sequence and follows the procedure of reference encoder, with the difference being a higher QP value. The encoder will code the sequence with the goal of achieving highest coding performance, and since the encoder is not restricted by any means, it is reasonable to assume that the coding performance is the best possible transcoding performance. H.265 is the latest video coding standard which supports encoding …
Trajectory Tracking Control Of A Quadrotor During Cooperative Operation Between Uav And Ugv, Ajibola S. Fowowe
Trajectory Tracking Control Of A Quadrotor During Cooperative Operation Between Uav And Ugv, Ajibola S. Fowowe
Electrical Engineering Theses - Archive
In recent times, there has been an increase in the use and application of unmanned aerial vehicles (UAVs). UAVs are used for various operations ranging from military applications to civilian purposes such as traffic monitoring, photography, surveillance and others. Within the UAV family, rotorcrafts take precedence over the fixed wing aircraft especially because of their unique features such as vertical takeoff and landing, increased payload, high maneuverability and more. They can be used to perform dangerous tasks and access environments that pose danger to man such as observatory wood and building fire, military purposes etc. This project focused on one …
Implementation Of A Java Processor On A Fpga, Omkar Joshi
Implementation Of A Java Processor On A Fpga, Omkar Joshi
Electrical Engineering Theses - Archive
Java, a programming language developed by Sun Microsystems in 1991, now managed by Oracle, has become one of the most popular computer languages for application development. This popularity can be credited to Java being architectural neutral and portable. It means that a Java program executed on any computer will yield the same result, irrespective of the underlying hardware. When a Java program is compiled it creates a Java class file. The class file contains instructions known as Bytecodes, which are executed by the Java Virtual Machine (JVM). The JVM is an abstract processor, which interprets and translates the bytecodes into …
Optimal Attribute Weighting In A Nearest Neighbor Classifier, Jugal Raju Sheth
Optimal Attribute Weighting In A Nearest Neighbor Classifier, Jugal Raju Sheth
Electrical Engineering Theses - Archive
Nearest Neighbor algorithms are non-parametric algorithms that use distance measure techniques for classification and regressions. This thesis, first improves the traditional nearest neighbor classifier by optimizing its distance measure using a second order training algorithm. It then presents a second order method to adjust center vectors. It is shown that the distance measure weight optimization and center vector optimization, individually and together reduce the final classification error. The testing error of our algorithm is shown to be less than that of LVQ V.2.1
Time-Triggered Controller Area Network Design For Formula Sae Racecars And Technique For Measuring Cpu Usage On Systems With Nested And Non-Nested Interrupts, Randy Kyle Long
Electrical Engineering Theses - Archive
This document presents a design method and example for a time-triggered CAN (TTCAN) system which reduces latency, variability in transmission frequency, and increases data throughput relative to the traditional free-for-all CAN (FFACAN) transmission system. In addition to performance considerations for a TTCAN transmission scheme, this document also presents a simple method for measuring CPU usage on embedded systems that use either nested or non-nested interrupts. Systems that use non-nested interrupts may have their performance measured with a single GPIO pin; systems that use nested interrupts require one pin per interrupt service routine.
Mux/Demux Of Hevc/H.265 Video Stream With He-Aac V2 Audio Bit Stream And To Achieve Lip Synch, Deepika Pagala
Mux/Demux Of Hevc/H.265 Video Stream With He-Aac V2 Audio Bit Stream And To Achieve Lip Synch, Deepika Pagala
Electrical Engineering Theses - Archive
The increasing demand for video and the increase in the number of devices enable of supporting digital media facilitate the enormous demand for video streaming over internet and and Internet Protocol Television (IPTV) applications. The high bit rates that result from the various types of digital video make their transmission through their intended channels very difficult. Hence it becomes necessary to select a good compression scheme to overcome storage and transportation problems of the digital video. High Efficiency Video Coding (HEVC) is an international standard for video compression developed by a working group of ISO/IEC MPEG (Moving Picture Experts Group) …
Second Order Algorithm For Sparsely Connected Neural Networks, Parastoo Kheirkhah
Second Order Algorithm For Sparsely Connected Neural Networks, Parastoo Kheirkhah
Electrical Engineering Theses - Archive
A systematic two-step batch approach for constructing a sparse neural network is presented. Unlike other sparse neural networks, the proposed paradigm uses orthogonal least squares (OLS) to train the network. OLS based pruning is proposed to induce sparsity in the network. Based on the usefulness of the basic functions in the hidden units, the weights connecting the output to hidden units and output to input units are modified to form a sparse neural network. The proposed hybrid training algorithm has been compared with the fully connected MLP and sparse softmax classifier that uses second order training algorithm. The simulation results …
Leak Detector System For Positive Airway Pressure Machines, Aishwarya Gopalakrishnan
Leak Detector System For Positive Airway Pressure Machines, Aishwarya Gopalakrishnan
Electrical Engineering Theses - Archive
The project aims to develop a system to indicate leaks occurring in a Positive Airway Pressure (PAP) machine which sends a passage of air to the patients suffering from sleep apnea, through a hose and a nose mask. The system uses programming software to record and analyse the data obtained from the sensors and provides an interface for the user to select a method for notifying the time instant and location of leak occurrences.The system used an approach of using sensors for leak detection. Two pressure sensors and two audio sensors were selected out of which, one pressure sensor and …
Smartphone-Based Crowd Sourcing Of Bicycle And Pedestrian Conflict Data For Transportation Safety Assessment, Rahul Ankushrao Kawadgave
Smartphone-Based Crowd Sourcing Of Bicycle And Pedestrian Conflict Data For Transportation Safety Assessment, Rahul Ankushrao Kawadgave
Electrical Engineering Theses - Archive
This thesis presents the idea of mobile application development that aims at data collection for transportation safety assessment using cloud-based database. At present, transportation safety assessment relies only on data available from crash, accident reports. In combination with this crash data, it is possible that conflict data can become a very influential performance measure for transportation safety assessment. A transportation conflict happens when two parties cross a path and one party must take an action to avoid a collision or a crash. Such conflicts can occur between different transportation elements or parties like vehicle drivers, bicyclists, pedestrians. This project helps …
Active Flyback Based Battery Management System With Proportional Balancing For Use In An Electric Race Car, Matthew Martin
Active Flyback Based Battery Management System With Proportional Balancing For Use In An Electric Race Car, Matthew Martin
Electrical Engineering Theses - Archive
Battery management systems are responsible for many tasks, most important of which is maintaining balance amongst the cells in a series string to prevent excess aging and unsafe operating conditions \cite{WhyBMS1}\cite{WhyBMS2}. In lithium-ion battery packs, traditionally, and almost exclusively in the world at large today, balancing is achieved by switching a resistor in parallel with high cells to bleed energy out of them and dissipate it as heat. This tactic is not only 100 percent inefficient, but it is slow due to power dissipation restrictions typically thermally imposed within a system, and it is only effective at preventing over-voltage conditions. …
Adaptive Torque Control Of A Robotic Manipulator, Drew F. Waller
Adaptive Torque Control Of A Robotic Manipulator, Drew F. Waller
Electrical Engineering Theses - Archive
In this thesis, I present the theory and application of enabling intuitive control and physical interaction between a human operator and a mobile manipulator. To do so, the model of the manipulator was estimated for its kinematic and inertial properties. Specifically selected in this project was the Kuka youBot for its ease of use and wide academic availability. With thorough modeling of this device that included the arm as well as the base, and advanced control and guidance techniques, an adaptive controller was used to guide the manipulator towards a goal trajectory with great accuracy. The goal trajectory was built …
Sparse Decentralized Principal Components Analysis For Dimensionality Reduction, Nanruo Chen
Sparse Decentralized Principal Components Analysis For Dimensionality Reduction, Nanruo Chen
Electrical Engineering Theses - Archive
Principal components analysis (PCA) is a data compression technology relying on dimensionality reduction. In a wireless sensor network, the acquired data may be spatially scattered and include many zero variables, for which a standard PCA approach cannot account for. To this end, a new algorithm is designed to solve both problems. We combine sparse principal components analysis (SPCA) and distributed principal components analysis (DPCA) together to obtain a sparse distributed principal components analysis (SDPCA) algorithm. Norm-one regularization along with the alternating direction method of multipliers (ADMM) is used for SPCA. ADMM is also employed to obtain a distributed compression algorithm …
Hdr Video Compression Using H.265 (Hevc) Main 10 Profile, Srikanth Vasireddy
Hdr Video Compression Using H.265 (Hevc) Main 10 Profile, Srikanth Vasireddy
Electrical Engineering Theses - Archive
Increasing the resolution of the video has been the main interest in the television industry for a long time. More recently the industry is studying techniques to increase the range of luminance and color representation in videos. This is achieved through High Dynamic Range/ Wide Color Gamut (HDR/WCG) videos by providing visual quality of experience to the end consumers close to that of real life compared to the Standard Dynamic Range (SDR) videos.In order to deliver high-quality video services to consumers, efficient compression techniques are required to store or transmit a video especially for high resolution video formats whilst maintaining …
Improved Similarity Measures For American Sign Language Recognition Using Manual Handshapes And Hand Appearances, Siddhartha Goutham Swaminathan
Improved Similarity Measures For American Sign Language Recognition Using Manual Handshapes And Hand Appearances, Siddhartha Goutham Swaminathan
Electrical Engineering Theses - Archive
American sign language is a primary language for approximately 0.5 to 2 million people who are deaf or hard of hearing in the United States[22][23]. When a user encounters an English word which he does not understand, he looks up the meaning for it in a dictionary. However, when an American Sign Language (ASL) user encounters an unknown sign, looking up the meaning of that sign is not an easy task. There are many systems available to access ASL signs that require articulatory properties such as handshapes but these systems fail if there is a slight variation of what the …
Multilayer Perceptron With Adaptive Activation Functions, Chinmay Appa Rane
Multilayer Perceptron With Adaptive Activation Functions, Chinmay Appa Rane
Electrical Engineering Theses - Archive
A Multilayer perceptron typically has a fixed nonlinear activation function for each hidden unit. In this thesis, an adaptive activation function for individual hidden unit is designed, where the network learns these activation functions at every iteration using a modern second order algorithm. Methods and algorithms for these adaptive activation functions along with several other techniques for training a multilayer perceptron’s weights are discussed. Comparisons between a multilayer perceptron with sigmoidal activation functions and a multilayer perceptron with piecewise linear activation functions are also discussed. The common activation function used is the sigmoidal activations, but it is still not proven …
Multi-Stage Enhancement Scheme For Low Quality Fingerprint Images, Ramakrishna Vighna Venkata Lanka
Multi-Stage Enhancement Scheme For Low Quality Fingerprint Images, Ramakrishna Vighna Venkata Lanka
Electrical Engineering Theses - Archive
Security and authentication go hand in hand in today’s internet age. The population growth and increase in web-based services have posed a substantial risk of identity theft and fraud. The need for reliable authentication to protect one’s belongings has become essential. The goal of such an authentication system is to recognize a person by validating his/her identity. The traditional identity management systems which validate on the basis of knowledge and tokens such as passwords and identity cards are susceptible to theft and duplication. Hence these systems cannot suffice for reliable identity management. Biometrics on the other hand validate an individual …
Reversible Data Hiding Using Histogram Shifting, Sai Saketh Nandagiri
Reversible Data Hiding Using Histogram Shifting, Sai Saketh Nandagiri
Electrical Engineering Theses - Archive
With the current state-of-the-art technology, intruders can easily gain access to sensitive information. To avoid this, different methods with improved security to hide information have been developed like, covert channels, hiding data in images, null ciphers, etc. The focus of this work is to enhance the security and data hiding capacity of the current state-of-the-art reversible data hiding algorithms. The proposed data hiding method is designed such that the original image is losslessly restored after extraction of a payload. The proposed framework allows embedding of a binary bit stream into the host or cover image while retaining the quality of …
Future Of Jpeg Xt: Privacy And Security, Maitri Shah
Future Of Jpeg Xt: Privacy And Security, Maitri Shah
Electrical Engineering Theses - Archive
JPEG is de facto the most important and popular image format since 1992 which provides compressed images to a great extent. JPEG XT, the latest standardization of the JPEG committee, provides some amazing features like: backwards compatibility, support for High Dynamic Range (HDR), lossless and near-lossless coding, and alpha channel coding, which were not provided by the previous JPEG standards. With the increase in the demand for photos- capturing, sharing, editing- privacy concerns have become the primary issue. Leakage of private photos to unauthorized users is unacceptable and hence the need for protecting and developing an algorithm to maintain the …
Compression Artifact Reduction In Hevc Using Adaptive Bilateral Filter, Rohith Reddy Etikala
Compression Artifact Reduction In Hevc Using Adaptive Bilateral Filter, Rohith Reddy Etikala
Electrical Engineering Theses - Archive
The High Efficiency Video Coding (HEVC) [8] is the latest video standard developed by Joint Collaborative Team on Video Coding (JCT-VC), a group of video coding experts from ITU-T Video Coding Experts Group and ISO/IEC Moving Picture Experts Group (MPEG). As the demand for HD video (4K and 8K) increased, there is a need for higher coding efficiency than H.264/AVC. Also, there is increased use of parallel processors. So, HEVC [8] has been introduced to support increased video resolution and parallel processing. HEVC obtains about 50% reduction in bit rate when compared to its predecessor H.264/AVC at the same visual …
A Switched Capacitor Based Transimpedance Amplifier For Detection Of Hab Through Optical Sensing, Uthra Mahendran
A Switched Capacitor Based Transimpedance Amplifier For Detection Of Hab Through Optical Sensing, Uthra Mahendran
Electrical Engineering Theses - Archive
In the recent years, there has been a substantial increase in the manifestation of harmful algal blooms. A certain species called cyanobacteria that is commonly present in freshwater bodies are found to release a class of deadly toxins known as microcystin. This toxin poses a threat to humans and wildlife since they can cause severe illness or even death on consumption of contaminated water. Traditional sampling methods are essentially lab based detection methods that are inconvenient and demands extensive manual effort. Hence, large-scale occurrence of harmful blooms in water resources demands the development of efficient and reliable methods for monitoring …
Comparison Of Different Metals As Electrodes For A Flexible Micro Ph Sensor, Pavan Kumar Kota
Comparison Of Different Metals As Electrodes For A Flexible Micro Ph Sensor, Pavan Kumar Kota
Electrical Engineering Theses - Archive
pH can be explained in general terms as a numerical scale used to state the acidity or basicity of an aqueous solution. Keeping track of pH is very useful in many applications like medicine, civil engineering, chemical engineering, biology, water purification etc. Most commonly used pH sensors employ glass electrodes but there are some disadvantages associated with these kinds of pH sensors. Glass is a rigid, chemically reactive and fragile material. Also, glass electrodes, owing to the size require significant quantity of solution to test for pH which makes it difficult to use in cases where we have very little …
Development, Testing And Characterization Of Electronic Skins For Robots, Ritvij Sahasrabuddhe
Development, Testing And Characterization Of Electronic Skins For Robots, Ritvij Sahasrabuddhe
Electrical Engineering Theses - Archive
The main purpose of this thesis is to test and characterize newly developed pressure sensors integrated into robot skin and understand their behavior for different testing parameters such as sensor and skin materials and geometry. Flexible electronic skin is meant to behave similar to human skin acting as a tactile interface with the robot environment. Before placing electronic skin onto robots, it is important to test and characterize such structures. Since the behavior of our pressure sensors embedded in robot skin was still unknown, an experimental setup has been developed in order to test and characterize the sensors and collect …
Evaluation Of Coding Tools For Screen Content In High Efficiency Video Coding, Shwetha Chandrakant Kodpadi
Evaluation Of Coding Tools For Screen Content In High Efficiency Video Coding, Shwetha Chandrakant Kodpadi
Electrical Engineering Theses - Archive
High Efficiency Video Coding (HEVC) [1] is the latest Video Coding format. It challenges the state-of-the-art H.264/AVC [3] Video Coding standard which is in current use in the industry by being able to reduce the bit rate by 50% and retaining the same video quality. It came into existence in the early 2012 although Joint Collaborative Team on Video Coding (JCT-VC) was formed in January 2001 to carry out developments on HEVC, and ever since then a huge range of development has been going on. On 13 April 2013 [11], HEVC standard also called H.265 was approved by ITU-T, Joint …
Distributed Algorithms For Electric Vehicle Charging, Akshay Malhotra
Distributed Algorithms For Electric Vehicle Charging, Akshay Malhotra
Electrical Engineering Theses - Archive
Coordinated charging of plug-in electric vehicles (PEVs) can effectively mitigate the negative effects imposed on the power distribution grid by uncoordinated charging. Simultaneously, coordinated charging algorithms can accommodate the PEV user’s needs in terms of desired state-of-charge and charging time. In this work, the problem of tracking an arbitrary power profile, by coordinated charging of PEVs, is formulated as a discrete scheduling process, while accounting for the heterogeneity in charging rates and restricting the charging to only the maximum rated power. Then, a novel distributed algorithm is proposed to coordinate the PEV charging and eliminate the need for a central …
Reducing Encoder Complexity Of Intra-Mode Decision Using Cu Early Termination Algorithm, Nishit Samirbhai Samirbhai Shah
Reducing Encoder Complexity Of Intra-Mode Decision Using Cu Early Termination Algorithm, Nishit Samirbhai Samirbhai Shah
Electrical Engineering Theses - Archive
In this thesis an intra prediction algorithm is proposed that terminates complete full search prediction for the CU and is replaced by CU early termination algorithm which determines the complexity of the CU block and then decision is made to further split or non-split the CU. When the CU texture is complex the CU is split into smaller sub units to find the best size and when the CU texture is flat, the CU is not divided further into sub – units. Down sampling is done first after which complexity is calculated by which a threshold value is set. This …
H.265 (Hevc) Bitstream To H.264 (Mpeg 4 Avc) Bitstream Transcoder, Deepak Hingole
H.265 (Hevc) Bitstream To H.264 (Mpeg 4 Avc) Bitstream Transcoder, Deepak Hingole
Electrical Engineering Theses - Archive
With every new video coding standard the general rule of thumb has been to maintain same video quality at a reduced bit rate of about 50% as compared to the previous standard. H.265 is the latest video coding standard with support for encoding videos with wide range of resolutions, starting from low resolution to beyond High Definition i.e. 4k or 8k. H.265 also known as HEVC was preceded by H.264 which is very well established and widely used standard in industry and finds its applications in broadcast, storage, multimedia telephony. Currently almost all devices including low power handheld mobile devices …
Sparse Signal Reconstruction In Linear Inverse Scattering Problem, Tanmoy Bhowmik
Sparse Signal Reconstruction In Linear Inverse Scattering Problem, Tanmoy Bhowmik
Electrical Engineering Theses - Archive
Proper mathematical modeling of inverse scattering problem is of utmost importance in applications such as optical imaging and microscopy, radar, acoustic, seismic and medical imaging. However, the problem is non-linear and ill-posed due to the diffusive nature of wave propagation through the scattering medium. Born and Rytov approximation are two widely used techniques to linearize the inverse scattering problem that simplifies the mathematics and modeling of wave propagation through scattering medium in special cases. The linear inverse scattering problem is still severely ill-posed and hence, in general, the solution is not stable and unique, unless a priori knowledge about the …
A High Frequency Memristor Emulator Circuit, Manu Chilukuri
A High Frequency Memristor Emulator Circuit, Manu Chilukuri
Electrical Engineering Theses - Archive
In this thesis, a low power, high frequency memristor emulator has been designed. The purpose of emulator circuit is to mimic the behavior of a memristor. The circuit consists of a summing amplifier, an integrator and a multiplier. The circuit has been implemented using commercial off the shelf (COTS) components in Keysight ADS simulation tool. For CMOS implementation, the emulator circuit has been designed using IBM 0.18um technology. The design of each circuit has been explained in this work. The Opamp designed achieves a gain of 89 dB, output swing of 1.584V and a bandwidth of 3.67 MHz. The circuit …
Multi-Stage Prediction Scheme For Screen Content Based On Hevc, Nagashree Mundgemane Nagaraj
Multi-Stage Prediction Scheme For Screen Content Based On Hevc, Nagashree Mundgemane Nagaraj
Electrical Engineering Theses - Archive
Screen content is a computer generated content which contains text, graphics and animations and the coding of such content is different from coding a photographic content. This thesis emphasizes on coding the screen content keeping the present video coding standard High Efficiency Video Coding (HEVC) as the base. An extension to HEVC to support screen content coding (SCC) is currently under development by the Joint Collaborative Team on Video Coding (JCT- VC) and the main goal of the extension is to provide improved compression performance of text, graphics and animation in addition to photographic content. This thesis focuses on a …
Reducing The Encoding Time Of Motion Estimation In Hevc Using Parallel Programming, Vasavee Vijayaraghavan
Reducing The Encoding Time Of Motion Estimation In Hevc Using Parallel Programming, Vasavee Vijayaraghavan
Electrical Engineering Theses - Archive
High Efficiency Video Coding (HEVC) is the current state-of-art video codec which is widely being adopted by lot of users. It has close to 50% reduction in encoding time compared to its predecessor, H.264 or AVC (Advanced Video Coding) at the cost of increased complexity. Lot of research is going towards reducing the complexity of this codec, at the same time, maintaining the visual quality that it produces and maintaining the reduced encoding time from its predecessor. As an effort to decrease the encoding time further, there can be several approaches. Parallel processing is taking a dominant role in many …