R
Rongrong Ni
Researcher at Beijing Jiaotong University
Publications - 84
Citations - 2478
Rongrong Ni is an academic researcher from Beijing Jiaotong University. The author has contributed to research in topics: Digital watermarking & Watermark. The author has an hindex of 21, co-authored 76 publications receiving 2052 citations.
Papers
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Journal ArticleDOI
Pairwise Prediction-Error Expansion for Efficient Reversible Data Hiding
TL;DR: This paper proposes to consider every two adjacent prediction-errors jointly to generate a sequence consisting of prediction-error pairs, and based on the sequence and the resulting 2D prediction- error histogram, a more efficient embedding strategy, namely, pairwise PEE, can be designed to achieve an improved performance.
Journal ArticleDOI
Contrast Enhancement-Based Forensics in Digital Images
TL;DR: This paper proposes two novel algorithms to detect the contrast enhancement involved manipulations in digital images, focusing on the detection of global contrast enhancement applied to the previously JPEG-compressed images, which are widespread in real applications.
Journal ArticleDOI
Reversible Watermarking Based on Invariability and Adjustment on Pixel Pairs
TL;DR: A novel reversible data hiding scheme based on invariability of the sum of pixel pairs and pairwise difference adjustment (PDA) is presented and half the difference of a pixel pair plus 1-bit watermark has been elaborately selected to satisfy this purpose.
Proceedings ArticleDOI
Forensic detection of median filtering in digital images
TL;DR: A blind forensic algorithm to detect median filtering (MF), which is applied extensively for signal denoising and digital image enhancement, is proposed and theoretically reasoning and experimental results verify the effectiveness of the proposed MF forensics scheme.
Journal ArticleDOI
Reversible data hiding using invariant pixel-value-ordering and prediction-error expansion
TL;DR: A novel RDH method based on pixel-value-ordering (PVO) and prediction-error expansion that outperforms Li et al.@?s and some other state-of-the-art works.