Image gradient index for classifying digital camera and scanned images

Conference proceedings article

Authors/Editors

Strategic Research Themes

No matching items found.

Publication Details

Author list: Mettripun N., Amornraksa T.

Publisher: Hindawi

Publication year: 2015

Start page: 474

End page: 478

Number of pages: 5

ISBN: 9781479944163

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922928467&doi=10.1109%2fISCIT.2014.7011958&partnerID=40&md5=cfe2e98f3247fc720c7783427b44f488

Languages: English-Great Britain (EN-GB)

View on publisher site

Abstract

This paper presents a new method for distinguishing images captured using digital camera from that using scanner. The method is based on the concept that the residual noise present in images capture device always distorts the directional change in the intensity or color in an image i.e. image gradient, and the resultant distortions are greatly obtained from printing and scanning process, compared to photography process. Hence, the gradient index values of scanned images derived from gradient values of such image should be lower than the ones obtained from photographic images. Based on the above concept, we propose a method for classifying digital camera and scanned images using image gradient index. The proposed method is tested and its performance is evaluated. The experimental results show that the classification performance up to 95% on average can be achieved using our method achieved. ฉ 2014 IEEE.

Keywords

gradient index, image classifying, image gradient