Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Difference from Background: Limit of Detection01:05

Difference from Background: Limit of Detection

7.1K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
7.1K
Association Areas of the Cortex01:21

Association Areas of the Cortex

6.3K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
6.3K
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

453
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
453
Centroid of a Body: Problem Solving01:03

Centroid of a Body: Problem Solving

1.3K
The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
1.3K
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

549
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
549

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

The ZFP36/ZFP252-OsDOG1L1-OsPP2Cs module regulates seed germination in rice.

Journal of integrative plant biology·2026
Same author

Expression of miR-27a in Patients with Steroid-associated Femoral Head Osteonecrosis and Its Regulatory Mechanism on Proliferation and Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells.

Journal of musculoskeletal & neuronal interactions·2026
Same author

Strength-Toughness-Wear Coupling Mechanisms of Low-Carbon Martensitic Wear-Resistant Steel Enabled by Ti/Nb Microalloying-Driven Carbide Precipitation and Synergistic Regulation of Tempered Microstructures.

Materials (Basel, Switzerland)·2026
Same author

Predicting the prognosis of breast cancer patients by using nutrition-based index: a systematic review and meta-analysis.

Frontiers in oncology·2026
Same author

Risk factors for bone cement leakage in percutaneous vertebroplasty and its prevention.

Pakistan journal of medical sciences·2026
Same author

Mechanisms of PfDNMT2 inhibition and PfATP6-mediated resistance to the antimalarial candidate SC83288 in Plasmodium falciparum.

Nature communications·2026
Same journal

A tri-axis optomechanical accelerometer with plasmonic MIM waveguide and structural direction-dependent optical signatures.

Scientific reports·2026
Same journal

Holographic leaky-wave antennas with independently controlled multiple counter-rotating vortex beams.

Scientific reports·2026
Same journal

Differential associations of longitudinal hearing and vision trajectories with dementia and mild cognitive impairment in older adults.

Scientific reports·2026
Same journal

Abdominal obesity and leisure-time sedentary behavior in relation to gastroesophageal reflux disease risk: a prospective cohort study from the UK Biobank.

Scientific reports·2026
Same journal

Effect of nitrogen-rich COF incorporation on the structure and separation performance of polyamide nanofiltration membranes.

Scientific reports·2026
Same journal

Withanolide A inhibits hIAPP aggregation: An In silico, biophysical, and drosophila-based In vivo validation.

Scientific reports·2026
查看所有相关文章

相关实验视频

Updated: Sep 17, 2025

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
03:31

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications

Published on: December 15, 2023

650

针对定向微小物体检测的多因素考虑样本分配.

Jun Miao1, Peng Liu2, Yuanhua Qiao3

  • 1College of Computer Science, Beijing Information Science and Technology University, Beijing, 102206, China. jmiao@bistu.edu.cn.

Scientific reports
|July 2, 2025
PubMed
概括
此摘要是机器生成的。

通过新的多因素考虑样本分配 (MCSA) 机制,在空中图像中检测微小物体得到了改进. 这种方法通过动态对准先验并选择最佳的正样来提高准确度,以实现定向感知物体检测.

关键词:
座 座 座 座多因素的多因素.方向 方向 方向 方向 方向修道院的修道士们样本分配的分配样本微小的物体检测检测 微小的物体检测

更多相关视频

Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

10.8K
From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

11.5K

相关实验视频

Last Updated: Sep 17, 2025

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
03:31

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications

Published on: December 15, 2023

650
Design and Analysis for Fall Detection System Simplification
08:05

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

10.8K
From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

11.5K

科学领域:

  • 计算机视觉 计算机视觉
  • 遥感 遥感 遥感 遥感
  • 机器学习 机器学习

背景情况:

  • 在航空图像中检测微小物体对于城市规划和环境监测至关重要.
  • 挑战包括不可预测的对象定向和缺乏独特特征,导致样本分配不匹配.
  • 对于定向对象,现有的方法在准确的前关联方面扎.

研究的目的:

  • 引入一种新的样本分配机制,以改善空中图像中的微小物体检测.
  • 为了应对对不同方向的对象分配正样的挑战.
  • 为了提高空中物体检测系统的精度.

主要方法:

  • 开发了一个多因素考虑样本分配 (MCSA) 机制.
  • 引入了一个动态先行区块 (DPB),用于动态对准先行与对象.
  • 实施了评估指标和动态高斯混合模型 (DGMM) 进行精细的样本选择.

主要成果:

  • 在DIOR-R,DOTA-v2.0,DOTA-v1.5和DOTA-1.0数据集上,MCSA方法表现出优于现有技术的性能.
  • 在DOTA-v2.0数据集上获得了51.86%的平均平均精度 (mAP),比基线提高5.18个百分点.
  • 该方法通过动态预先分配和选择兼容的阳性样本来确保精确的样本分配.

结论:

  • 拟议的MCSA机制有效地提高了空中图像中微小物体检测的准确性.
  • 动态预先对齐和强大的样本选择是提高定向对象检测精度的关键.
  • 这项工作为城市规划和环境监测等应用的航空图像分析提供了显著的进步.