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相关概念视频

Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

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Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
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相关实验视频

Updated: May 7, 2026

Long-term Video Tracking of Cohoused Aquatic Animals: A Case Study of the Daily Locomotor Activity of the Norway Lobster Nephrops norvegicus
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使用形状特征进行版权保护的强大的3D对象水印方案.

Sarah M Alhammad1, Nada Ahmed1, Safia Abbas2

  • 1Department of Computer Sciences, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.

PeerJ. Computer science
|June 10, 2024
PubMed
概括
此摘要是机器生成的。

本研究引入了一种使用离散波纹转换的新3D物体水印方法. 该技术有效地将秘密图像嵌入并提取到3D模型中,确保高无感知度和数据完整性.

关键词:
3D对象的水印 3D对象的水印这是盲目的提取.离散波量变换是离散波量变换.秘密的灰度图像 图像中的秘密灰度图像

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Three-Dimensional Shape Modeling and Analysis of Brain Structures
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Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
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科学领域:

  • 计算机科学 计算机科学
  • 数字图像处理 数字图像处理
  • 密码学 密码学 密码学 密码学

背景情况:

  • 数字水印对于保护知识产权和确保3D模型中的数据安全至关重要.
  • 现有的方法往往难以保持高不可察觉性和对攻击的强度.
  • 基于顶点的水印为安全的数据嵌入3D对象提供了一个有希望的途径.

研究的目的:

  • 开发一个先进的3D物体水印模型,使用离散波纹转换.
  • 将一个秘密的灰度图像嵌入到高保真度的3D对象顶点中.
  • 在不可察觉性,透明度和执行时间方面评估模型的性能.

主要方法:

  • 利用离散波形变换从3D对象顶点提取特征.
  • 实施了一个新的集成阶段,以嵌入加密的秘密灰度图像三次.
  • 采用了一个提取阶段,使用水印检索的集成技术的反向.
  • 在各种3D对象上测试模型,包括斯坦福子,马,猫雕像和天使.

主要成果:

  • 拟议的水印技术在执行时间和不可察觉性方面表现出卓越的性能.
  • 实现了高水平的无感知性和透明度,对3D模型的扭曲最小.
  • 提取的秘密灰度图像与原始水印完美匹配,在所有测试模型中实现了1的结构相似度指数.

结论:

  • 开发的3D对象水印模型为数据安全提供了有效和强大的解决方案.
  • 该方法确保了高数据完整性和不可感知性,使其适合保护敏感的3D数据.
  • 离散波形变换和顶点系数嵌入为安全的3D水印提供了强大的组合.