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Prosopagnosia01:24

Prosopagnosia

123
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
123
Routh-Hurwitz Criterion II01:19

Routh-Hurwitz Criterion II

174
In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
174
Routh-Hurwitz Criterion I01:15

Routh-Hurwitz Criterion I

143
Consider an electrical power grid, where stability is essential to prevent blackouts. The Routh-Hurwitz criterion is a valuable tool for assessing system stability under varying load conditions or faults. By analyzing the closed-loop transfer function, the Routh-Hurwitz criterion helps determine whether the system remains stable.
To apply the Routh-Hurwitz criterion, a Routh table is constructed. The table's rows are labeled with powers of the complex frequency variable s, starting from the...
143
Second Uniqueness Theorem01:16

Second Uniqueness Theorem

966
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
966

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相关实验视频

Updated: May 28, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
09:49

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Published on: December 24, 2015

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基于同型加密的面部识别隐私保护方法.

Zhigang Song1, Gong Wang2, Wenqin Yang1

  • 1The Academy of Digital China, Fuzhou, Fujian, China.

PloS one
|February 11, 2025
PubMed
概括

这项研究介绍了HE_FaceNet,一种使用近似同型加密 (HE) 保护面部数据隐私的面部识别系统. 使用集群算法的优化显著提高了这种安全面部识别方法的计算效率.

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相关实验视频

Last Updated: May 28, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
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Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Published on: December 24, 2015

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科学领域:

  • 计算机科学 计算机科学
  • 生物识别信息 生物识别信息
  • 密码学 密码学 密码学 密码学

背景情况:

  • 面部识别技术广泛使用,但纯文本数据的存储和处理带来了重大隐私风险.
  • 现有的方法缺乏对敏感面部数据的强有力的隐私保护.

研究的目的:

  • 开发一个使用近似同型加密 (HE_FaceNet) 的隐私保护面部识别框架.
  • 通过基于集群的优化方案来提高HE_FaceNet的计算效率.

主要方法:

  • 使用预训练模型提取的面部特征模板,然后加密.
  • 通过欧几里德距离进行加密模板匹配,解密后可识别.
  • 集群算法用于将类似的加密面部特征分组为加速搜索.

主要成果:

  • HE_FaceNet有效地保护面部数据隐私,同时保持高识别准确度.
  • 集群优化显著提高了计算效率.
  • 优化的框架在各种面部数据集中表现出高准确性和效率.

结论:

  • HE_FaceNet为保护隐私的面部识别提供了一个可行的解决方案.
  • 基于集群的优化对于基于HE的面部识别系统的实际应用至关重要.