56 citations · 146 across the 7 of their papers we have counts for
7 papers
Hapi: A Robust Pseudo-3D Calibration-Free WiFi-based Indoor Localization System
Heba Aly, Ashok Agrawala
In this paper, we present Hapi, a novel system that uses off-the-shelf standard WiFi to provide pseudo-3D indoor localization. It estimates the user's floor and her 2D location on…
semMatch: Road Semantics-based Accurate Map Matching for Challenging Positioning Data
Heba Aly, Moustafa Youssef
Map matching has been used to reduce the noisiness of the location estimates by aligning them to the road network on a digital map. A growing number of applications, e.g. energy-ef…
An Analysis of Device-Free and Device-Based WiFi-Localization Systems
Heba Aly, Moustafa Youssef
WiFi-based localization became one of the main indoor localization techniques due to the ubiquity of WiFi connectivity. However, indoor environments exhibit complex wireless propag…
Map++: A Crowd-sensing System for Automatic Map Semantics Identification
Heba Aly, Anas Basalamah, Moustafa Youssef
Digital maps have become a part of our daily life with a number of commercial and free map services. These services have still a huge potential for enhancement with rich semantic i…
LaneQuest: An Accurate and Energy-Efficient Lane Detection System
Heba Aly, Anas Basalamah, Moustafa Youssef
Current outdoor localization techniques fail to provide the required accuracy for estimating the car's lane. In this paper, we present LaneQuest: a system that leverages the ubiqui…
It's the Human that Matters: Accurate User Orientation Estimation for Mobile Computing Applications
Nesma Mohssen, Rana Momtaz, Heba Aly +1
Ubiquity of Internet-connected and sensor-equipped portable devices sparked a new set of mobile computing applications that leverage the proliferating sensing capabilities of smart…
Dejavu: An Accurate Energy-Efficient Outdoor Localization System
Heba Aly, Moustafa Youssef
We present Dejavu, a system that uses standard cell-phone sensors to provide accurate and energy-efficient outdoor localization suitable for car navigation. Our analysis shows that…