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A robust and efficient Simultaneous Localization and Mapping (SLAM) system is essential for robot autonomy. For visual SLAM algorithms, though the theoretical framework has been well established for most aspects, feature extraction and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Dongjiang Li , Xuesong Shi , Qiwei Long , Shenghui Liu , Wei Yang , Fangshi Wang , Qi Wei , Fei Qiao

Depth estimation is a foundational component for 3D reconstruction in minimally invasive endoscopic surgeries. However, existing monocular depth estimation techniques often exhibit limited performance to the varying illumination and complex…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Xinning Yao , Bo Liu , Bojian Li , Jingjing Wang , Jinghua Yue , Fugen Zhou

This paper explores how deep learning techniques can improve visual-based SLAM performance in challenging environments. By combining deep feature extraction and deep matching methods, we introduce a versatile hybrid visual SLAM system…

Robotics · Computer Science 2024-06-05 Zhang Xiao , Shuaixin Li

Recent advancements of neural networks lead to reliable monocular depth estimation. Monocular depth estimated techniques have the upper hand over traditional depth estimation techniques as it only needs one image during inference. Depth…

Computer Vision and Pattern Recognition · Computer Science 2020-06-01 Alwyn Mathew , Aditya Prakash Patra , Jimson Mathew

In this paper, we present an efficient visual SLAM system designed to tackle both short-term and long-term illumination challenges. Our system adopts a hybrid approach that combines deep learning techniques for feature detection and…

Robotics · Computer Science 2025-02-28 Kuan Xu , Yuefan Hao , Shenghai Yuan , Chen Wang , Lihua Xie

In this paper, we address the problem of monocular depth estimation when only a limited number of training image-depth pairs are available. To achieve a high regression accuracy, the state-of-the-art estimation methods rely on CNNs trained…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 Rongrong Ji , Ke Li , Yan Wang , Xiaoshuai Sun , Feng Guo , Xiaowei Guo , Yongjian Wu , Feiyue Huang , Jiebo Luo

In surgical oncology, screening colonoscopy plays a pivotal role in providing diagnostic assistance, such as biopsy, and facilitating surgical navigation, particularly in polyp detection. Computer-assisted endoscopic surgery has recently…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Baoru Huang , Yida Wang , Anh Nguyen , Daniel Elson , Francisco Vasconcelos , Danail Stoyanov

Estimating precise metric depth and scene reconstruction from monocular endoscopy is a fundamental task for surgical navigation in robotic surgery. However, traditional stereo matching adopts binocular images to perceive the depth…

Robotics · Computer Science 2022-11-29 Ruofeng Wei , Bin Li , Hangjie Mo , Fangxun Zhong , Yonghao Long , Qi Dou , Yun-Hui Liu , Dong Sun

A major limitation of minimally invasive surgery is the difficulty in accurately locating the internal anatomical structures of the target organ due to the lack of tactile feedback and transparency. Augmented reality (AR) offers a promising…

Robotics · Computer Science 2024-09-19 Jingwei Song , Ray Zhang , Wenwei Zhang , Hao Zhou , Maani Ghaffari

We present HI-SLAM2, a geometry-aware Gaussian SLAM system that achieves fast and accurate monocular scene reconstruction using only RGB input. Existing Neural SLAM or 3DGS-based SLAM methods often trade off between rendering quality and…

Robotics · Computer Science 2026-02-03 Wei Zhang , Qing Cheng , David Skuddis , Niclas Zeller , Daniel Cremers , Norbert Haala

Visual Simultaneous Localization and Mapping (vSLAM) is a widely used technique in robotics and computer vision that enables a robot to create a map of an unfamiliar environment using a camera sensor while simultaneously tracking its…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Yasaman Haghighi , Suryansh Kumar , Jean-Philippe Thiran , Luc Van Gool

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

In this paper we address the benefit of adding adversarial training to the task of monocular depth estimation. A model can be trained in a self-supervised setting on stereo pairs of images, where depth (disparities) are an intermediate…

Image and Video Processing · Electrical Eng. & Systems 2019-10-30 Rick Groenendijk , Sezer Karaoglu , Theo Gevers , Thomas Mensink

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

Recent advances in deep monocular visual Simultaneous Localization and Mapping (SLAM) have achieved impressive accuracy and dense reconstruction capabilities, yet their robustness to scale inconsistency in large-scale indoor environments…

Robotics · Computer Science 2026-02-23 Hyoseok Ju , Bokeon Suh , Giseop Kim

In recent years, there have been significant advancements in 3D reconstruction and dense RGB-D SLAM systems. One notable development is the application of Neural Radiance Fields (NeRF) in these systems, which utilizes implicit neural…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Tianchen Deng , Yanbo Wang , Hongle Xie , Hesheng Wang , Jingchuan Wang , Danwei Wang , Weidong Chen

Simultaneous localization and mapping (SLAM) remains challenging for a number of downstream applications, such as visual robot navigation, because of rapid turns, featureless walls, and poor camera quality. We introduce the Differentiable…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Peter Karkus , Shaojun Cai , David Hsu

Gastroendoscopy has been a clinical standard for diagnosing and treating conditions that affect a part of a patient's digestive system, such as the stomach. Despite the fact that gastroendoscopy has a lot of advantages for patients, there…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 Aji Resindra Widya , Yusuke Monno , Masatoshi Okutomi , Sho Suzuki , Takuji Gotoda , Kenji Miki

Feed-forward geometric foundation models can infer dense point clouds and camera motion directly from RGB streams, providing priors for monocular SLAM. However, their predictions are often view-dependent and noisy: geometry can vary across…

Robotics · Computer Science 2026-04-14 Evgenii Kruzhkov , Sven Behnke

Recently the dense Simultaneous Localization and Mapping (SLAM) based on neural implicit representation has shown impressive progress in hole filling and high-fidelity mapping. Nevertheless, existing methods either heavily rely on known…

Robotics · Computer Science 2024-11-07 Jiahui Wang , Yinan Deng , Yi Yang , Yufeng Yue