Ghada Fathy - Academia.edu (original) (raw)

Papers by Ghada Fathy

arXiv (Cornell University), Apr 28, 2018

Research Square (Research Square), Feb 5, 2024

Recently, Egypt has recognized the pivotal role of High-Performance Computing in advancing scienc... more Recently, Egypt has recognized the pivotal role of High-Performance Computing in advancing science and innovation. The Egyptian National High Performance Computing Grid (EN-HPCG) advocates for consolidating high-performance computing resources, creating a unified pool accessible to all universities and scientific research centers using the PBS Pro scheduler. Therefore, this paper delves into the architecture and capabilities of the EN-HPCG grid using two different workload management systems: (i) Slurm (Open-Source) and (ii) PBS Pro (Licensed). Additionally, it assesses the grid's performance in specific high-throughput computing (HTC) applications using the NAS Grid parallel benchmark (NGB). The evaluation includes gridlevel performance metrics such as throughput, and the number of tasks completed as a function of time. Also, the presented methodology aims to assist potential partners in their decision-making process to join the EN-HPCG grid, with a focus on the site speed-up metric. Our results showed that it is not advisable to integrate a

2011 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011

Many challenges face transmitting highly detailed geometric models in wireless medium such as ren... more Many challenges face transmitting highly detailed geometric models in wireless medium such as rendering performance, limited bandwidth, limited resources of mobile devices and storage capacities. In this paper, we proposed a client server communication architecture in wireless medium using progressive mesh to build a dynamic level of details of 3D objects. The dense triangle mesh is decomposed into base mesh

Pervasive and Mobile Computing, 2015

The past few years have witnessed a dramatic growth in the number and variety of graphics intensi... more The past few years have witnessed a dramatic growth in the number and variety of graphics intensive mobile applications, which allow users to interact and navigate through large scenes such as historical sites, museums and virtual cities. These applications support many clients and impose a heavy requirement on network resources and computational resources. One key issue in the design of cost efficient mobile walkthrough applications is the data transmission between servers and mobile client devices. In this paper, we propose an effective progressive mesh transmission framework that stores and divide scene objects into different resolutions. In this approach, each mobile device progressively receives and processes only the object's details matching its display resolution which improves the overall system's response time and the user's perception. A fine grained cache mechanism is used to keep the most frequently requested objects' details in the device memory and consequently reduce the network traffic. Experiments, in simulated and real world environment, are used to illustrate the effectiveness of the proposed framework under various settings of the virtual scene and mobile device configuration. Experimental results show that the proposed framework can improve the walkthrough system performance in mobile devices, with a relatively small overhead.

The last years have witnessed a dramatic growth in the number as well as the variety of graphics ... more The last years have witnessed a dramatic growth in the number as well as the variety of graphics intensive mobile applications, which allow users to interact and navigate through large scenes such as ancient places, museums and even virtual cities. These applications support many clients and impose a heavy requirement on network resources and computational resources. One key issue in the design of cost efficient mobile walkthrough applications is the data transmission between servers and mobile client devices. In this paper, we propose an effective progressive mesh transmission framework that stores and divide scene objects into different resolutions. This way, each mobile progressively receives and process the only object's details that match with its display resolution, and hence improving the user's perception and overall system's response time. A fine grained cache mechanism is used to keep the most frequently requested objects' details in the device memory and c...

PeerJ Computer Science

Occlusion awareness is one of the most challenging problems in several fields such as multimedia,... more Occlusion awareness is one of the most challenging problems in several fields such as multimedia, remote sensing, computer vision, and computer graphics. Realistic interaction applications are suffering from dealing with occlusion and collision problems in a dynamic environment. Creating dense 3D reconstruction methods is the best solution to solve this issue. However, these methods have poor performance in practical applications due to the absence of accurate depth, camera pose, and object motion.This paper proposes a new framework that builds a full 3D model reconstruction that overcomes the occlusion problem in a complex dynamic scene without using sensors’ data. Popular devices such as a monocular camera are used to generate a suitable model for video streaming applications. The main objective is to create a smooth and accurate 3D point-cloud for a dynamic environment using cumulative information of a sequence of RGB video frames. The framework is composed of two main phases. Th...

Journal of Real-Time Image Processing