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http://hdl.handle.net/2080/3151
Title: | Exposing Image Resizing utilizing Welch Power Spectral Density Analysis for Double Compressed JPEG Images |
Authors: | Sahu, Sidhant Okade, Manish |
Keywords: | Image Resizing Welch Power Spectral Density Analysis Double Compressed JPEG Images |
Issue Date: | Dec-2018 |
Citation: | IEEE International Workshop on Information Forensics and Security (WIFS 2018), Hong Kong, China, 11-13 December 2018 |
Abstract: | This paper addresses the problem of forensic analysis of recompressed images in the presence of image resizing, particularly the estimation of the resizing factor by which the image underwent resizing. The proposed method analyzes the Welch power spectral density for presence of peaks introduced by double JPEG artefacts in-order to arrive at the correct resizing factor. The correct resizing factor estimation serves as an important forensic clue since it provides vital information on the life history of the image. Experimental validation carried out utilizing several double compressed JPEG images taken from heterogeneous datasets along with comparative analysis with an existing method shows superior performance for the proposed method. |
Description: | Copyright of this document belongs to proceedings publisher. |
URI: | http://hdl.handle.net/2080/3151 |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
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2018_IEEE WIFS_MOkade_ExposingImage.pdf | Conference paper | 306.97 kB | Adobe PDF | View/Open |
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