Browsing Department of Electrical Engineering by Author "Devarajan, Venkat"
Now showing items 1-20 of 23
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Collision Detection And Penetration Depth Calculation In Virtual Surgical Simulation
Pavithran, Rupin (Electrical Engineering, 2009-09-16)Virtual Reality (VR) based surgical simulators create a simulated, realistic three dimensional surgical environments using advanced graphic and haptic rendering techniques. Virtual objects, which are geometric surface ... -
Collision Response For Virtual Laparoscopic Surgery
Butala, Jitesh Devidas (Electrical Engineering, 2007-08-23)During laparoscopic surgery the surgeon operates inside the abdomen guided by the 2D imagery of the operating area. This image is obtained via a camera inserted through a small incision. Laparoscopic surgery, in contrast ... -
Collision Response Of Surface Modeled Organs For Virtual Laparoscopic Surgery
Adhikari, Dibbesh Sharma (Electrical Engineering, 2009-09-16)Laparoscopic surgery is a modern surgical procedure in which, operations are performed in the abdomen by monitoring the image from a laparoscope: a telescopic rod lens system, which is usually connected to a video camera ... -
A Comparison Method To Evaluate Motion Splicing Techniques
Thekkanath Raphael, George (Electrical Engineering, 2011-07-14)The development of methods for the re-use and modification of motion data is an activearea of research. Among these methods, we find automatic techniques to generate a spliced motion by combining different actions recorded ... -
Deformable Haptic Models For Surgical Simulation
Wang, Xiuzhong (Electrical Engineering, 2007-08-23)Surgical simulation is in great need for surgical training, analysis, planing and rehearsal. The core of this simulation is the deformable models for the organs. The deformable model must provides both realistic visual ... -
Design And Simulation Of An Accurate Breast Biopsy System
Tandon, Sumit (Electrical Engineering, 2007-09-17)Core needle biopsy is a non-invasive technique for confirming breast and prostate cancer. Over the years, several non-real time image guided systems have been developed to guide the needle to the target lesion/tumor. ... -
Fast Algorithms For MDCT And Low Delay Filterbanks Used In Audio Coding
Chivukula, Ravi Kiran (Electrical Engineering, 2008-08-08)Modern audio and speech coding systems use filterbank and transform coding techniques to decorrelate the input signal. Cosine-modulated, perfect reconstruction, pseudo-QMF filterbanks are most commonly used for this ... -
Improvement In The Performance Of 3G Wireless Communications Systems Using An ICA Based Signal Processing Block
Dsouza, Winston (Electrical Engineering, 2011-10-11)In this thesis, we have implemented a signal processing block in the receiver of a third generation (3G) cellular system to provide improvement in the quality of service. Each block of the cellular system, including the ... -
Improving the Bit Error Rate Performance Of GSM System Using A Independent Component Analysis based Non-linear Filter
Singh, Kumarabhijeet (Electrical Engineering, 2008-08-08)Presently, call drop out is considered a major problem in wireless communication. A large percentage of call drops take place due to network congestion, handover failure and high bit error rate.Our main objective is to ... -
A LiDAR-based Auto Hydro Breakline Generation Algorithm For Standing Water Bodies
Toscano, George JohnAirborne Light Detection and Ranging (LiDAR) is a sensor that can generate terrain elevation and intensity data of very large areas with high precision and dense resolution. The intensity and elevation are co-registered, ... -
Lung Nodule Detection and Segmentation Using a Patch-Based Multi-Atlas Method
Alam, Mustafa (2018-08-13)CT image based lung nodule detection is the most widely used and accepted method for detecting lung cancer. Most CT image based methods rely on supervised learning, which has a high number of false positives and need a ... -
Modeling Isotropic Organs Using Beam Models For The Haptic Simulation Of Blunt Dissections Of Bile Duct
Dalmiya, Vishal (Electrical Engineering, 2007-09-17)Haptic modeling of organs using existing approaches is still not realistic and/or real time. We propose and develop the mathematical foundation of a new approach to modeling organs using beams. Beams are well known entities ... -
Needle Detection And Localization In Simulated In-vivo Ultrasound Image For Use In Breast Biopsy
Khullar, Nidhi (Electrical Engineering, 2012-04-11)This thesis addresses needle segmentation in ultrasound images for breast cancer biopsy. The thesis reviews the state-of-the-art in object localization using ultrasound (US) imagery. In particular, principal component ... -
A New Feature Descriptor For LiDARStrip Matching
Jayendra Lakshman, Mythreya (Electrical Engineering, 2014-07-14)Light Detection and Ranging (LiDAR) data has been getting a lot of attention these days because of its applicability in various fields - city planning, disaster response & precaution, soil conservation, infrastructure or ... -
Novel Cost Measures For Robust Recognition Of Dynamic Hand Gestures
Kulkarni, Ameya (Electrical Engineering, 2012-04-11)Computer vision aided automatic hand gesture recognition system plays a vital role in real world human computer interaction applications such as sign language recognition, game controls, virtual reality, intelligent home ... -
ON FEATURE EXTRACTION FROM LARGE SCALE LINEAR LIDAR DATA
Acharjee, Partha Pratim; 0000-0003-4058-0129 (2017-08-08)Airborne light detection and ranging (LiDAR) can generate co-registered elevation and intensity map over large terrain. The co-registered 3D map and intensity information can be used efficiently for different feature ... -
On Reducing Call Drop Outs By Improving Bit Error Rate Performance In A GSM Mobile Communications System
Sharma, Sudeep (Electrical Engineering, 2008-08-08)Call Drop Out is one of the most annoying problems in Mobile Communications. It is one of the most important Quality of Service (QoS) indicators for a mobile carrier. Over the years, many strategies have been proposed to ... -
Optimal Path Planning, Implementation And Simulation For A Breast Biopsy System
Rajaram, Sridhar (Electrical Engineering, 2012-04-11)Core needle biopsy is a non-invasive method of confirming the presence of cancer cells in the breast. Image guided breast biopsy is a procedure performed to extract suspicious tissue and test it under the microscope for ... -
ROBUST TRAINING METHODS FOR DEEP NEURAL NETWORKS WITH A VARIETY OF LABEL NOISE
Kamabattula, Sree Ram (2021-05-07)Requirement of significant amount of labeled training data is a major drawback in training deep neural networks (DNNs), due to the presence of mislabeled examples in these datasets. This label noise is shown to have an ... -
Simulation Of Tetrahedral Mesh Based Organ Deformation Using Parameter Optimized Spring Constants
Mukherjee, Koyel (Electrical Engineering, 2008-09-17)Virtual reality based surgical simulators are becoming increasingly popular for training doctors on minimally invasive surgery. For these simulators, it is necessary to generate 3D organ models and create virtual environments ...