Jisoo Choi

Works (2)

Updated: September 1st, 2023 05:00

2023 journal article

Analysis of ENF Signal Extraction From Videos Acquired by Rolling Shutters

IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 18, 4229–4242.

By: J. Choi n, C. Wong n , H. Su & M. Wu *

author keywords: ~Electric network frequency (ENF); rolling shut-ter; filter bank; multirate signal processing; multimedia forensics
TL;DR: Analysis of two representative methods for extracting ENF signals from visual signals acquired by cameras using the rolling-shutter mechanism implies that the periodic zeroing-out method offers more accurate frequency estimates, but the performance improvement is moderate. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023

2022 journal article

Invisible Geolocation Signature Extraction From a Single Image

IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, 17, 2598–2613.

By: J. Choi n, C. Wong n , A. Hajj-AlunadO, M. Wa & Y. Ren *

author keywords: Recording; Cameras; Sensors; Entropy; Time-frequency analysis; Frequency estimation; Location awareness; Region-of-capturing localization; electric network frequency (ENF); frequency estimation; entropy minimization; rolling shutter
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Sources: Web Of Science, NC State University Libraries
Added: August 1, 2022

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