Results 11 to 20 of about 76 (74)
Face Editing Using Part‐Based Optimization of the Latent Space
Computer Graphics Forum, Volume 42, Issue 2, Page 269-279, May 2023., 2023 Abstract We propose an approach for interactive 3D face editing based on deep generative models. Most of the current face modeling methods rely on linear methods and cannot express complex and non‐linear deformations. In contrast to 3D morphable face models based on Principal Component Analysis (PCA), we introduce a novel architecture based on ...
Mohammad Amin Aliari +3 more
wiley +1 more source
State of the Art in Dense Monocular Non‐Rigid 3D Reconstruction
Computer Graphics Forum, Volume 42, Issue 2, Page 485-520, May 2023., 2023 Abstract 3D reconstruction of deformable (or non‐rigid) scenes from a set of monocular 2D image observations is a long‐standing and actively researched area of computer vision and graphics. It is an ill‐posed inverse problem, since—without additional prior assumptions—it permits infinitely many solutions leading to accurate projection to the input 2D ...
Edith Tretschk +9 more
wiley +1 more source
High‐quality reversible data hiding scheme using sorting and enhanced pairwise PEE
IET Image Processing, Volume 16, Issue 4, Page 1096-1110, March 2022., 2022 Abstract This paper proposes a novel reversible data hiding (RDH) technique using sorting and pairwise prediction error expansion (PEE) to improve embedding capacity (EC) while retaining the quality of cover image. The proposed scheme traverses alternate pixels of the cover image in a zig‐zag order to construct two independent sets for sequential ...
Gurjinder Kaur +4 more
wiley +1 more source
Reversible data hiding based on multi‐predictor and adaptive expansion
IET Image Processing, Volume 16, Issue 3, Page 888-899, February 2022., 2022 Abstract Adaptive embedding plays an important role in improving the embedding performance of reversible data hiding and it is usually realized by modifying the prediction‐errors discriminately. By extending the skewed histogram shifting technique which uses a pair of extreme predictions to determine whether the target pixel should be predicted or not,
Wenguang He +2 more
wiley +1 more source
Separable Reversible Data Hiding in Encrypted VQ‐Encoded Images
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 In this paper, a reversible data‐hiding scheme in encrypted, vector quantization (VQ) encoded images is proposed. During image encryption, VQ‐encoded image, including codebook and index table, is encrypted by content owner with stream‐cipher and permutation to protect the privacy of image contents. As for additional‐data embedding, a baseline method is
Fang Cao +6 more
wiley +1 more source
Reversible Data Hiding Based on Multiple Pairwise PEE and Two‐Layer Embedding
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Recent reversible data hiding (RDH) work tends to realize adaptive embedding by discriminately modifying pixels according to image content. However, further optimization and computational complexity remain great challenges. By presenting a better incorporation of pixel value ordering (PVO) prediction and pairwise prediction‐error expansion (PEE ...
Wenguang He +3 more
wiley +1 more source
Reversible Data Hiding Based on Multichannel Difference Value Ordering for Color Images
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Considering the correlation existing among different color channels of the image, we propose a novel reversible data hiding (RDH) scheme based on multichannel difference value ordering. By applying the technique of pixel value ordering (PVO), we establish a certain relationship by sorting the differences among adjacent pixels of different color ...
Yongjun Kong +6 more
wiley +1 more source
Noise Modulation‐Based Reversible Data Hiding with McEliece Encryption
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 McEliece cryptosystem is expected to be the next generation of the cryptographic algorithm due to its ability to resist quantum computing attacks. Few research studies have combined it with reversible data hiding in the encrypted domain (RDH‐ED). In this article, we analysed and proved that there is a redundancy in the McEliece encryption process that ...
Zexi Wang +5 more
wiley +1 more source
Weighted Average‐Based Complexity Calculation in Block Selection Oriented Reversible Data Hiding
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Complexity of blocks is one of the key factors to influence the performance of reversible data hiding. By embedding data into blocks with smaller complexity, the invalid shifting in pixel value ordering (PVO) based reversible data hiding is largely reduced, thus increasing the imperceptibility.
Xin Tang +4 more
wiley +1 more source
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 The existing reversible data hiding methods in encrypted domain separate image encryption from information embedding and do not make full use of the redundant space in the process of image encryption. In order to improve the performance of reversible data hiding by using the technical characteristics of image encryption, a reversible data hiding method
Kong Yongjun +5 more
wiley +1 more source