DMCA
SmartPhoto: A Resource-Aware Crowdsourcing Approach for Image Sensing with Smartphones
| Citations: | 1 - 0 self |
BibTeX
@MISC{Wang_smartphoto:a,
author = {Yi Wang and Wenjie Hu and Yibo Wu and Guohong Cao},
title = {SmartPhoto: A Resource-Aware Crowdsourcing Approach for Image Sensing with Smartphones},
year = {}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Photos obtained via crowdsourcing can be used in many critical applications. Due to the limitations of communi-cation bandwidth, storage and processing capability, it is a challenge to transfer the huge amount of crowdsourced photos. To address this problem, we propose a framework, called SmartPhoto, to quantify the quality (utility) of crowd-sourced photos based on the accessible geographical and geo-metrical information (called metadata) including the smart-phone’s orientation, position and all related parameters of the built-in camera. From the metadata, we can infer where and how the photo is taken, and then only transmit the most useful photos. Three optimization problems regard-ing the tradeoffs between photo utility and resource con-straints, namely the Max-Utility problem, the online Max-Utility problem and the Min-Selection problem, are stud-ied. Efficient algorithms are proposed and their perfor-mance bounds are theoretically proved. We have imple-mented SmartPhoto in a testbed using Android based smart-phones, and proposed techniques to improve the accuracy of the collected metadata by reducing sensor reading errors and solving object occlusion issues. Results based on real implementations and extensive simulations demonstrate the effectiveness of the proposed algorithms.
Keyphrases
resource-aware crowdsourcing approach photo utility object occlusion issue many critical application min-selection problem communi-cation bandwidth perfor-mance bound geo-metrical information resource con-straints efficient algorithm processing capability related parameter sensor reading error useful photo extensive simulation built-in camera huge amount crowd-sourced photo max-utility problem optimization problem crowdsourced photo online max-utility problem real implementation smart-phone orientation imple-mented smartphoto
