Endoscopic Depth Estimation Based on Deep Learning: A Survey

• URL: http://arxiv.org/abs/2507.20881v1
• Date: Mon, 28 Jul 2025 14:34:45 GMT
• Title: Endoscopic Depth Estimation Based on Deep Learning: A Survey
• Authors: Ke Niu, Zeyun Liu, Xue Feng, Heng Li, Kaize Shi,
• Abstract summary: Endoscopic depth estimation is a critical technology for improving the safety and precision of minimally invasive surgery.<n>Despite the existence of several related surveys, a comprehensive overview focusing on recent deep learning-based techniques is still limited.<n>This paper endeavors to bridge this gap by systematically reviewing the state-of-the-art literature.
• Score: 3.1801587453753113
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Endoscopic depth estimation is a critical technology for improving the safety and precision of minimally invasive surgery. It has attracted considerable attention from researchers in medical imaging, computer vision, and robotics. Over the past decade, a large number of methods have been developed. Despite the existence of several related surveys, a comprehensive overview focusing on recent deep learning-based techniques is still limited. This paper endeavors to bridge this gap by systematically reviewing the state-of-the-art literature. Specifically, we provide a thorough survey of the field from three key perspectives: data, methods, and applications, covering a range of methods including both monocular and stereo approaches. We describe common performance evaluation metrics and summarize publicly available datasets. Furthermore, this review analyzes the specific challenges of endoscopic scenes and categorizes representative techniques based on their supervision strategies and network architectures. The application of endoscopic depth estimation in the important area of robot-assisted surgery is also reviewed. Finally, we outline potential directions for future research, such as domain adaptation, real-time implementation, and enhanced model generalization, thereby providing a valuable starting point for researchers to engage with and advance the field.

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