在单眼结肠镜中通过摄像机内在学导学习进行规模一致的3D重建
Yeqi Liu1, Deping Yu1, Yijiang Xiao2
1School of Mechanical Engineering, Sichuan University, Chengdu, 610065, Sichuan, China.
概括
这项研究引入了一种用于3D结肠镜重建的新方法,可以在没有额外传感器的情况下准确地估计深度和摄像头运动. 该框架确保了规模的一致性,以便更好地进行结肠亮度分析.
科学领域:
- 医疗成像医学成像
- 计算机视觉 计算机视觉
- 胃肠病学 胃肠病学
背景情况:
- 对结肠膜的精确3D空间理解对于结肠镜质量评估至关重要.
- 单眼结肠镜缺乏深度传感器,阻碍了精确的尺度一致的深度和摄像机运动恢复.
- 现有的方法在从单眼内镜视频中实现稳定而准确的3D重建方面面临挑战.
研究的目的:
- 在单眼结肠镜中开发一个新的尺度一致的3D重建框架.
- 使用无传感器方法恢复准确的深度和摄像机运动.
- 改进结肠镜检查过程中的几何感知分析和质量评估.
主要方法:
- 一个两步培训策略,涉及预训练深度估计网络的合成数据与自适应深度调整模块.
- 使用内在引导的尺度对齐模块将合成摄像头的深度预测转换为伪深度标签.
- 采用联合深度姿势学习,具有几何意识的3D损失和全球一致的推理优化策略.
主要成果:
- 在C3VD数据集上实现了最先进的深度和准确性,显著超过现有的基线.
- 从临床视频中证明了从解剖学上可信的结肠光层几何重建,表明稳定和可解释的尺度恢复.
- 与最强的基线相比,AbsRel降低了16.1%,轨迹APE降低了86.7%.
结论:
- 拟议的框架为单眼结肠镜中尺度一致的3D重建提供了一个无传感器解决方案.
- 通过提供准确的深度和摄像机运动,使可靠的几何意识分析和质量评估成为可能.
- 促进了从内镜手术中改善下游分析和对结肠解剖学的理解.
更多相关视频
10:40Label-free, High-Resolution 3D Imaging and Machine Learning Analysis of Intestinal Organoids via Low-Coherence Holotomography
Published on: August 12, 2025
1.8K
03:43Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
854
相关概念视频
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
518
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
518
Endoscopic Procedures III: Video Capsule Endoscopy
1.0K
Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
1.0K
