Intelligent Routing in MANETs |
Goals: Using Intelligent Techniques for routing in Mobile Ad-hoc Networks (MANETs) to increase robustness under dynamic conditions. |
***************************************************************************** |
|
Implementation and improvement of a routing protocol on MANETs such as AODV |
Goals: An ad-hoc network is the cooperative engagement of a collection of mobile nodes without the required intervention of any centralized access point or existing infrastructure. In this project we implement Ad-hoc On Demand Distance Vector Routing (AODV), a novel algorithm for the operation of such ad-hoc networks. Each Mobile Host operates as a specialized router, and routes are obtained as needed (i.e., on-demand) with little or no reliance on periodic advertisements. Our new routing algorithm is quite suitable for a dynamic self starting network, as required by users wishing to utilize ad-hoc networks. AODV provides loop-free routes even while repairing broken links. Because the protocol does not require global periodic routing advertisements, the demand on the overall bandwidth available to the mobile nodes is substantially less than in those protocols that do necessitate such advertisements. Nevertheless we can still maintain most of the advantages of basic distance-vector routing mechanisms. We show that our algorithm scales to large populations of mobile nodes wishing to form ad-hoc networks. |
***************************************************************************** |
|
A Robust Multiresolution Filter for Enhancement of Noisy Images |
Goals: In this project after investigating the multiresolution filters, with the aid of nonlinear robust filters theory, a framework for robust multiresolution filters will be presented. A new algorithm will be proposed for the removal of gaussian and impulsive noise from the images |
***************************************************************************** |
|
Content-Based Search of Image Data Bases with Semantic Rules |
Goals: Due to the increasing investment on producing multimedia content and using it in diverse distributed areas on the Internet, searching image databases has turned into a hot research topic. In traditional methods, statistical characteristics of an image such as color, texture and shape are immensely used to search in the databases. These methods do not present suitable results in many cases because they do not utilize the semantic relations. Therefore, some researchers focus on semantic methods. Many of these methods are trying to extract the semantic relations through the statistical information of the images. Indeed, there is a gap between two levels of statistical features and comprehensible semantic relations which is known as semantic gap. Building a semantic framework, classifying the images and ultimately, putting them into the mentioned framework can be used to bridge this gap. In this project the Bayesian network approach is utilized for classification and content-based search of images in a semantic framework. |
***************************************************************************** |
|
VoIP over GPRS |
Goals: The number of VoIP users is growing huger day by day and increasing varieties of users are getting involved more and more in this area. Given this market growth, it seems that using the circuit-switched GSM network without any competitor is somehow strange. Although the GSM network growth in this last decade is worthy of appreciation; however, the evolution toward 3G is a sign that GSM will also move toward packet-switching based on IP. Nevertheless, the existing GSM network infrastructure in many countries cannot support this rapid change and will tend to use 2.5G as a transition mechanism. If we can use VoIP over GPRS, it offers a good alternative to the circuit-switched GSM network and creates a new business model for operators while reducing the cost of voice calls for GSM users. |
***************************************************************************** |
|
A New Rate Control Algorithm for Performance Enhancement of H.264 CODEC in Wireless Networks |
Goals: In recent years, video transmission on different communication networks like mobile and Internet is growing very fast. H.264 is a video compression standard with a high quality and low bit rate which is used for applications like video conferencing, video transmission on wireless networks and video streaming. Wireless Networks have lots of fluctuations; these fluctuations are the result of a combination of attenuation, multi-path fading and shadowing and reflections result in signals being transmitted over multiple paths between sender and receiver. So, the method which is used for bit-rate control and video streaming on wireless networks should be able to compensate both channel errors and video interruptions. In this project, a new method for optimizing bit-rate control of H.264 will be proposed and the new method will be tested on standard sequences in a simulated environment. |
***************************************************************************** |
|
Object-based Video Processing |
Goals: Scientific research in the different section of an object-based video encoder especially in providing the object-based input of the encoder and object post-processing. |
***************************************************************************** |
|
Error Concealment for Video over Wireless |
Goals: Performance Enhancement of H.264 Video CODEC by Wireless Channel Error Concealment. |
***************************************************************************** |
|
| An Information Theoretic Approach to Distributed Video Coding |
Goals: 1- To find the minimal achievable transmission rate for a multimedia application with admissible distortion 2- To organize an algorithm for such a minimal rate over admissible distortion |
***************************************************************************** |
|
Facial Expression by Thermal Images |
Goals: The aim of this thesis is about the detecting real and fake facial expression by thermal images. |
***************************************************************************** |
|
Network Coding for Multi-Path Video Streaming in Wireless Ad-Hoc Networks |
Goals: Presenting a new approach using network coding for multi-path layered video streaming over ad-hoc networks |
***************************************************************************** |
|
Overlay Based Multimedia Multicasting in Wireless Ad hoc Networks |
Goals: Presenting a new approach in overlay multicasting for ad hoc networks for multimedia applications |
***************************************************************************** |
|
Design and Implementation of an Internet kiosk with embedded Linux |
Goals: To make an Internet kiosk for using in public places |
***************************************************************************** |
|
Matching Pursuit Image and Video Processing |
Goals: 1. Define new and efficient MP feature vectors based on local image texture; 2. Using MP for better very low bit rate video coding, based on improving some parts of Hybrid-DCT video coding with this regards. |
***************************************************************************** |
|
scalable ad hoc architecture for multimedia application |
Goals: 1. Making one of multicast protocol scalable; 2. Working on clustering and examine its effect on performance of multicast protocol |
***************************************************************************** |
|
Marking-Up Persian Carpet’s within E-Catalogues |
|
***************************************************************************** |
|
VoIP over GPRS |
Summary: The number of VoIP users is growing huger day by day and increasing varieties of users are getting involved more and more in this area. Given this market growth, it seems that using the circuit-switched GSM network without any competitor is somehow strange. Although the GSM network growth in this last decade is worthy of appreciation; however, the evolution toward 3G is a sign that GSM will also move toward packet-switching based on IP. Nevertheless, the existing GSM network infrastructure in many countries cannot support this rapid change and will tend to use 2.5G as a transition mechanism. If we can use VoIP over GPRS, it offers a good alternative to the circuit-switched GSM network and creates a new business model for operators while reducing the cost of voice calls for GSM users. |