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相关概念视频

Eyewitness Memory01:22

Eyewitness Memory

69
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function...
69

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相关实验视频

Updated: May 16, 2025

Quantifying Intermembrane Distances with Serial Image Dilations
07:45

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基于预测错误压缩的加密图像的可逆数据隐藏和身份验证方案.

Fang Ren1,2, Zhelin Zhang3,4, Kai Jiang3

  • 1School of Cyberspace Security, Xi'an University of Posts and Telecommunications, Xi'an, 710121, China. renfang_81@163.com.

Scientific reports
|April 4, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的可逆数据隐藏和对加密图像的身份验证方案. 它确保图像和秘密数据的可逆恢复和内容完整性,提高安全性和嵌入能力.

关键词:
验证身份验证 验证身份验证加密的图像加密图像.预测错误是因为预测错误.可逆的数据隐藏方式

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Last Updated: May 16, 2025

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科学领域:

  • 计算机科学 计算机科学
  • 信息安全 信息安全
  • 数字法医学数字法医学

背景情况:

  • 对于加密图像而言,现有的可逆数据隐藏方案通常无法保证图像内容的完整性.
  • 封面图像的可逆恢复是可能的,但内容认证仍然是一个挑战.

研究的目的:

  • 为加密图像提出一个新的可逆数据隐藏和身份验证方案.
  • 确保封面图像的可逆恢复和封面图像内容和秘密数据的身份验证.
  • 为了提高安全性,嵌入容量和数据完整性,加密图像隐形图像.

主要方法:

  • 使用一个新的预测器,ISGAP (图像结构引导自适应预测),用于更准确的预测和更小的预测错误.
  • 采用自适应的Huffman编码来压缩预测错误,增加嵌入空间的纯文本身份验证信息.
  • 将秘密数据和加密文本身份验证信息嵌入到数据隐藏器加密的图像中.
  • 接收器在覆盖恢复和纯文本认证之前使用不同的密钥执行密码文本认证.

主要成果:

  • 与现有方法相比,拟议的方案显示了更高的嵌入能力.
  • 有效地实现图像内容认证.
  • 确保高安全性和可逆恢复原始图像和秘密数据.
  • 从BOSSbase和BOWS-2数据集中对100张图像进行实验验证.

结论:

  • 开发的方案成功地将可逆数据隐藏与加密图像的强大身份验证相结合.
  • 它解决了以前方法的局限性,通过保证内容完整性以及可逆恢复.
  • 该计划为数字图像的安全可靠隐形图形提供了显著的进步.