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Related papers: Depth estimation of endoscopy using sim-to-real tr…

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This paper proposes a realistic image generation method for visualization in endoscopic simulation systems. Endoscopic diagnosis and treatment are performed in many hospitals. To reduce complications related to endoscope insertions,…

Image and Video Processing · Electrical Eng. & Systems 2022-01-14 Masahiro Oda , Kiyohito Tanaka , Hirotsugu Takabatake , Masaki Mori , Hiroshi Natori , Kensaku Mori

Accurate depth estimation enhances endoscopy navigation and diagnostics, but obtaining ground-truth depth in clinical settings is challenging. Synthetic datasets are often used for training, yet the domain gap limits generalization to real…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Xinqi Xiong , Andrea Dunn Beltran , Jun Myeong Choi , Marc Niethammer , Roni Sengupta

Deep learning has the potential to improve colonoscopy by enabling 3D reconstruction of the colon, providing a comprehensive view of mucosal surfaces and lesions, and facilitating the identification of unexplored areas. However, the…

Monocular depth estimation in colonoscopy video aims to overcome the unusual lighting properties of the colonoscopic environment. One of the major challenges in this area is the domain gap between annotated but unrealistic synthetic data…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Shuxian Wang , Akshay Paruchuri , Zhaoxi Zhang , Sarah McGill , Roni Sengupta

Objective: Depth estimation is crucial for endoscopic navigation and manipulation, but obtaining ground-truth depth maps in real clinical scenarios, such as the colon, is challenging. This study aims to develop a robust framework that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Sijia Du , Chengfeng Zhou , Suncheng Xiang , Jianwei Xu , Dahong Qian

Automatic segmentation of anatomical landmarks in endoscopic images can provide assistance to doctors and surgeons for diagnosis, treatments or medical training. However, obtaining the annotations required to train commonly used supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Clara Tomasini , Luis Riazuelo , Ana C. Murillo

This paper addresses the problem of dense depth predictions from sparse distance sensor data and a single camera image on challenging weather conditions. This work explores the significance of different sensor modalities such as camera,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Sadique Adnan Siddiqui , Axel Vierling , Karsten Berns

Monocular depth estimation (MDE) for colonoscopy is hampered by the domain gap between simulated and real-world images. Existing image-to-image translation methods, which use depth as a posterior constraint, often produce structural…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Juan Yang , Yuyan Zhang , Han Jia , Bing Hu , Wanzhong Song

Deep learning has emerged as a powerful artificial intelligence tool to interpret medical images for a growing variety of applications. However, the paucity of medical imaging data with high-quality annotations that is necessary for…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Faisal Mahmood , Richard Chen , Sandra Sudarsky , Daphne Yu , Nicholas J. Durr

Colonoscopy is the choice procedure to diagnose colon and rectum cancer, from early detection of small precancerous lesions (polyps), to confirmation of malign masses. However, the high variability of the organ appearance and the complex…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Josué Ruano , Martín Gómez , Eduardo Romero , Antoine Manzanera

Accurate depth estimation from images is a fundamental task in many applications including scene understanding and reconstruction. Existing solutions for depth estimation often produce blurry approximations of low resolution. This paper…

Computer Vision and Pattern Recognition · Computer Science 2019-03-12 Ibraheem Alhashim , Peter Wonka

Transmission electron microscope (TEM) images are often corrupted by noise, hindering their interpretation. To address this issue, we propose a deep learning-based approach using simulated images. Using density functional theory…

Materials Science · Physics 2025-01-22 Jinwoong Chae , Sungwook Hong , Sungkyu Kim , Sungroh Yoon , Gunn Kim

Recovering structure and motion parameters given a image pair or a sequence of images is a well studied problem in computer vision. This is often achieved by employing Structure from Motion (SfM) or Simultaneous Localization and Mapping…

Computer Vision and Pattern Recognition · Computer Science 2018-11-07 Thanuja Dharmasiri , Andrew Spek , Tom Drummond

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…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Ke Niu , Zeyun Liu , Xue Feng , Heng Li , Qika Lin , Kaize Shi

Medical endoscopy remains a challenging application for simultaneous localization and mapping (SLAM) due to the sparsity of image features and size constraints that prevent direct depth-sensing. We present a SLAM approach that incorporates…

Image and Video Processing · Electrical Eng. & Systems 2019-07-02 Richard J. Chen , Taylor L. Bobrow , Thomas Athey , Faisal Mahmood , Nicholas J. Durr

The quality of images captured by wireless capsule endoscopy (WCE) is key for doctors to diagnose diseases of gastrointestinal (GI) tract. However, there exist many low-quality endoscopic images due to the limited illumination and complex…

Image and Video Processing · Electrical Eng. & Systems 2020-03-17 Shaofeng Zou , Mingzhu Long , Xuyang Wang , Xiang Xie , Guolin Li , Zhihua Wang

A major obstacle to the development of effective monocular depth estimation algorithms is the difficulty in obtaining high-quality depth data that corresponds to collected RGB images. Collecting this data is time-consuming and costly, and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Seungyeop Lee , Knut Peterson , Solmaz Arezoomandan , Bill Cai , Peihan Li , Lifeng Zhou , David Han

Colorectal cancer remains one of the deadliest cancers in the world. In recent years computer-aided methods have aimed to enhance cancer screening and improve the quality and availability of colonoscopies by automatizing sub-tasks. One such…

Computer Vision and Pattern Recognition · Computer Science 2023-10-04 Anita Rau , Binod Bhattarai , Lourdes Agapito , Danail Stoyanov

Scene depth estimation from paintings can streamline the process of 3D sculpture creation so that visually impaired people appreciate the paintings with tactile sense. However, measuring depth of oriental landscape painting images is…

Computer Vision and Pattern Recognition · Computer Science 2024-03-08 Sungho Kang , YeongHyeon Park , Hyunkyu Park , Juneho Yi

A major challenge in applying deep learning to medical imaging is the paucity of annotated data. This study demonstrates that synthetic colonoscopy images generated by Generative Adversarial Network (GAN) inversion can be used as training…

Image and Video Processing · Electrical Eng. & Systems 2025-07-02 Mayank Golhar , Taylor L. Bobrow , Saowanee Ngamruengphong , Nicholas J. Durr
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