Measurement of size and distance of objects using mobile devices

This paper proposes methods for measuring size and distance of target objects by using mobile devices. For close-range measurement of a size of an object, users must hold the device close to the object and drag it along a desired direction. We develop a new approach for estimating a dragging distanc...

Full description

Saved in:
Bibliographic Details
Main Authors: Suraphol Laotrakunchai, Akarapas Wongkaew, Karn Patanukhom
Format: Conference Proceeding
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84894221894&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/47414
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-47414
record_format dspace
spelling th-cmuir.6653943832-474142018-04-25T08:39:45Z Measurement of size and distance of objects using mobile devices Suraphol Laotrakunchai Akarapas Wongkaew Karn Patanukhom This paper proposes methods for measuring size and distance of target objects by using mobile devices. For close-range measurement of a size of an object, users must hold the device close to the object and drag it along a desired direction. We develop a new approach for estimating a dragging distance of the device using acceleration signals retrieved from a three-axis accelerometer embedded on it. In the cases that target objects locate far from the device, users have to drag it vertically and two images of the objects are captured at starting and ending points of a dragging period. Then, the device displacement is estimated using acceleration signals, and a disparity of the object in two images is also determined via a matching technique based on Speeded Up Robust Features (SURF). The object disparity, dragging distance and device orientation are used as features to determine a distance between the target object and the device and also a size of it using learning-based scheme. Experimental results are presented to demonstrate a performance of the proposed methods. © 2013 IEEE. 2018-04-25T08:39:45Z 2018-04-25T08:39:45Z 2013-12-01 Conference Proceeding 2-s2.0-84894221894 10.1109/SITIS.2013.36 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84894221894&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47414
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description This paper proposes methods for measuring size and distance of target objects by using mobile devices. For close-range measurement of a size of an object, users must hold the device close to the object and drag it along a desired direction. We develop a new approach for estimating a dragging distance of the device using acceleration signals retrieved from a three-axis accelerometer embedded on it. In the cases that target objects locate far from the device, users have to drag it vertically and two images of the objects are captured at starting and ending points of a dragging period. Then, the device displacement is estimated using acceleration signals, and a disparity of the object in two images is also determined via a matching technique based on Speeded Up Robust Features (SURF). The object disparity, dragging distance and device orientation are used as features to determine a distance between the target object and the device and also a size of it using learning-based scheme. Experimental results are presented to demonstrate a performance of the proposed methods. © 2013 IEEE.
format Conference Proceeding
author Suraphol Laotrakunchai
Akarapas Wongkaew
Karn Patanukhom
spellingShingle Suraphol Laotrakunchai
Akarapas Wongkaew
Karn Patanukhom
Measurement of size and distance of objects using mobile devices
author_facet Suraphol Laotrakunchai
Akarapas Wongkaew
Karn Patanukhom
author_sort Suraphol Laotrakunchai
title Measurement of size and distance of objects using mobile devices
title_short Measurement of size and distance of objects using mobile devices
title_full Measurement of size and distance of objects using mobile devices
title_fullStr Measurement of size and distance of objects using mobile devices
title_full_unstemmed Measurement of size and distance of objects using mobile devices
title_sort measurement of size and distance of objects using mobile devices
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84894221894&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/47414
_version_ 1681423056475521024