Related Experiment Video
Updated: Jan 19, 2026
01:22
Fluid-Attenuated Inversion Recovery Magnetic Resonance Imaging to Visualize Multiple Sclerosis Lesions
Published on: May 30, 2025
192
Weighted visual secret sharing with multiple decryptions and lossless recovery.
Feng Liu1, Xue Hu Yan1, Yu Liang Lu1
1National University of Defense Technology, Hefei 230037, China.
Mathematical Biosciences and Engineering : MBE
|September 11, 2019
Summary
This study introduces a weighted visual secret sharing (VSS) scheme where shares have varying importance. It enables multi-level secret image recovery based on collected shares, with lossless recovery using XOR operations.
Area of Science:
- Computer Science
- Cryptography
- Information Security
Background:
- Traditional visual secret sharing (VSS) assigns equal importance to all shares.
- Some applications require differentiated participant importance for secret recovery.
- Existing VSS schemes lack flexible recovery levels based on share importance.
Purpose of the Study:
- To propose a weighted (k,n)-threshold random grid VSS (RG-VSS) scheme.
- To enable multi-level secret image recovery based on share weights.
- To achieve lossless secret recovery using XOR operations.
Main Methods:
- Developed a weighted (k,n)-threshold RG-VSS scheme.
- Implemented secret recovery using OR and XOR operations.
- Demonstrated multi-level decryption based on share weights.
Main Results:
- The proposed scheme allows recovery of different quality levels of the secret image with varying numbers of shares.
- Lossless recovery of the secret image is achieved when all shares are combined using XOR.
- Experimental results validate the scheme's effectiveness and superiority over related methods.
Conclusions:
- The weighted (k,n)-threshold RG-VSS scheme offers flexible and multi-level secret image recovery.
- The scheme provides lossless recovery capabilities, enhancing data security.
- This approach addresses the limitations of traditional VSS in scenarios requiring differentiated participant importance.
Related Concept Videos
01:22Fluid-Attenuated Inversion Recovery Magnetic Resonance Imaging to Visualize Multiple Sclerosis Lesions
192
Position the head of a patient with multiple sclerosis inside the radiofrequency or RF coil of an MRI machine.Begin fluid-attenuated inversion recovery or FLAIR imaging. Select a brain slice containing lesions near CSF-rich areas.The system generates a strong magnetic field, aligning protons in healthy and lesioned brain tissue and CSF along its direction, creating net magnetization.Apply an inversion RF pulse to flip the magnetization of all protons, aligning them opposite to the magnetic...
192
01:23Lossless Lines
557
In electrical engineering, a lossless transmission line is characterized by a purely imaginary propagation constant and a resistive characteristic impedance. The ABCD parameters, which describe the relationship between the input and output voltages and currents, indicate an equivalent π circuit with an imaginary series impedance and a shunt admittance. This results in a transmission line that, when the product of the phase constant (beta) and the length of the line is less than pi, exhibits...
557
07:57Using the GELFREE 8100 Fractionation System for Molecular Weight-Based Fractionation with Liquid Phase Recovery
17.0K
The accompanying video describes the use of the GELFREE 8100 Fractionation System, which partitions complex protein samples on the basis of molecular weight and recovers the fractions in liquid phase. The video describes how the technology works, how it is used, and provides resultant data, with polyacrylamide gel electrophoresis analysis of fractionated bovine liver...
17.0K
01:21Boundary Conditions: Lossless Lines
427
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
427
01:27Traveling Waves: Lossless Lines
468
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx and a shunt capacitance CΔx.
468
05:58Measuring Relative Insulin Secretion using a Co-Secreted Luciferase Surrogate
7.9K
This protocol describes how to perform rapid low-cost luciferase assays at medium-throughput using an insulin-linked Gaussia luciferase as a proxy for insulin secretion from beta cells. The assay can be performed with most luminescence plate readers and multichannel...
7.9K