Results 21 to 30 of about 1,251 (171)

Lossless Snubber Cell for a Soft-Switched Bidirectional Buck–Boost Converter

open access: yesIEEE Access, 2020
In this paper, we propose a lossless snubber cell for a soft-switched bidirectional buck-boost converter (BBC). The proposed snubber cell provides all switches with soft-switching conditions in both the bidirectional power flows of the BBC.
Hyung-Ik Joo, Sang-Kyoo Han
doaj   +1 more source

An Enhance Scheme of Visual Secret Share for Lossless Recovery

open access: yesInternational Journal of Engineering and Advanced Technology, 2020
Algorithms in Visual Cryptography usually uses a sharing scheme where instead of sharing the secret or message directly, it is embedded into multiple shares which are then shared between the intended individuals whereby upon receiving them the decrypting algorithm on the receiving end restores the original secret.
Kalyan Das   +4 more
openaire   +1 more source

Adaptive Unified Data Embedding and Scrambling for Three-Dimensional Mesh Models

open access: yesIEEE Access, 2019
Traditionally, unified data embedding and scrambling techniques have been designed for grayscale images, which cannot be applied directly to a three-dimensional (3D) mesh. Recently, the universal use of 3D technology inspired us to innovate in this field.
Liu-Yao Hao   +5 more
doaj   +1 more source

Practical Secret Image Sharing Based on the Chinese Remainder Theorem

open access: yesMathematics, 2022
Compared with Shamir’s original secret image sharing (SIS), the Chinese-remainder-theorem-based SIS (CRTSIS) generally has the advantages of a lower computation complexity, lossless recovery and no auxiliary encryption. However, general CRTSIS is neither
Longlong Li   +4 more
doaj   +1 more source

A Novel Robust Reversible Watermarking Scheme for Protecting Authenticity and Integrity of Medical Images

open access: yesIEEE Access, 2019
It is of great importance in telemedicine to protect authenticity and integrity of medical images. They are mainly addressed by two technologies, which are region of interest (ROI) lossless watermarking and reversible watermarking.
Xiyao Liu   +7 more
doaj   +1 more source

Weighted visual secret sharing with multiple decryptions and lossless recovery

open access: yesMathematical Biosciences and Engineering, 2019
Traditional visual secret sharing (VSS) encodes the original secret image into n shares, and each share is of equal importance. However, in some scenarios, we need to make a difference between the participants according to the levels of their importance. Therefore, the capability of each share to recover the original secret image will be different.
Feng Liu   +4 more
openaire   +4 more sources

Data Hiding and Authentication Scheme for Medical Images Using Double POB

open access: yesApplied Sciences
To protect the security of medical images and to improve the embedding ability of data in encrypted medical images, this paper proposes a permutation ordered binary (POB) number system-based hiding and authentication scheme for medical images, which ...
Fang Ren   +3 more
doaj   +1 more source

Secure and Reversible Thumbnail-Preserving Encryption for Point Clouds via Spatial Subdivision and Chaotic Perturbation

open access: yesMathematics
Thumbnail-preserving encryption (TPE) aims to balance data security and usability by allowing encrypted content to retain a coarse visual preview while protecting sensitive details.
Tz-Yi You   +5 more
doaj   +1 more source

Compression-Assisted Adaptive ECC and RAID Scattering for NAND Flash Storage Devices

open access: yesSensors, 2020
NAND flash memory-based storage devices are vulnerable to errors induced by NAND flash memory cells. Error-correction codes (ECCs) are integrated into the flash memory controller to correct errors in flash memory. However, since ECCs show inherent limits
Seung-Ho Lim, Ki-Woong Park
doaj   +1 more source

Analysis of properties of reversible steganography methods

open access: yesJournal of Computer Sciences Institute, 2018
Steganography is a science that deals with hiding information in other information, and it's becoming increasingly popular with rapid growth of Internet utilization.
Piotr Zimnicki, Grzegorz Kozieł
doaj   +1 more source

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