Video Forensic

Video forensics
  Video forensics is an investigation technique for detecting manipulated(forged) video, and is a key technology for solving various image/video related legal problems.

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Video forgery
  There are various methods for video forgery.
Video Forgery occurs in a variable ways without visible clues. We detect the forgery of the video by detecting the features of the forged video with some specific models like video coding patterns, frequency domain parameters and detecting whether the video has been compressed only once or not.

 

Classification
  We perform forged video classification with machine learning techniques using the features extracted from the verification video.
There is traditionally a forged video classification technique through machine learning. Recently, we have used forged video classification techniques using deep learning techniques which are useful in various fields.

[홍진형, 양윤모, 오병태, “부호화 패턴 분석을 통한 영상 조작 검출 기술,” 방송공학회논문지, Nov. 2017.]
[홍진형, 양윤모, 오병태, “CNN 기반 HEVC 압축된 동영상의 삭제 검출 기법,” 한국방송미디어공학회 하계학술대회, 2018.]
[홍진형, 양윤모, 오병태, “부호화 패턴 분석을 통한 영상 조작 검출 기술,” 한국방송미디어공학회 하계학술대회, 2017.]
[홍진형, 양윤모, 오병태, “부호화 정보를 이용한 영상 삭제 검출,” 영상처리 및 이해에 관한 워크샵, 2017.]

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