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Reconstructing 3D scenes from monocular surgical videos can enhance surgeon's perception and therefore plays a vital role in various computer-assisted surgery tasks. However, achieving scale-consistent reconstruction remains an open…

计算机视觉与模式识别 · 计算机科学 2025-04-07 Jiaxin Guo , Wenzhen Dong , Tianyu Huang , Hao Ding , Ziyi Wang , Haomin Kuang , Qi Dou , Yun-Hui Liu

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…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Aji Resindra Widya , Yusuke Monno , Masatoshi Okutomi , Sho Suzuki , Takuji Gotoda , Kenji Miki

Single-image depth estimation is essential for endoscopy tasks such as localization, reconstruction, and augmented reality. Most existing methods in surgical scenes focus on in-domain depth estimation, limiting their real-world…

计算机视觉与模式识别 · 计算机科学 2025-01-07 Qingyao Tian , Zhen Chen , Huai Liao , Xinyan Huang , Lujie Li , Sebastien Ourselin , Hongbin Liu

Background and Purpose: Convolutional neural network is widely used for image recognition in the medical area at nowadays. However, overall accuracy in predicting lung tumor is low and the processing time is high as the error occurred while…

图像与视频处理 · 电气工程与系统科学 2022-08-15 Bhoj Raj Pandit , Abeer Alsadoon , P. W. C. Prasad , Sarmad Al Aloussi , Tarik A. Rashid , Omar Hisham Alsadoon , Oday D. Jerew

With the rapid advancements in autonomous driving and robot navigation, there is a growing demand for lifelong learning models capable of estimating metric (absolute) depth. Lifelong learning approaches potentially offer significant cost…

计算机视觉与模式识别 · 计算机科学 2023-10-16 Junjie Hu , Chenyou Fan , Liguang Zhou , Qing Gao , Honghai Liu , Tin Lun Lam

Monocular depth estimation is a challenging task that predicts the pixel-wise depth from a single 2D image. Current methods typically model this problem as a regression or classification task. We propose DiffusionDepth, a new approach that…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Yiqun Duan , Xianda Guo , Zheng Zhu

While an increasing interest in deep models for single-image depth estimation methods can be observed, established schemes for their evaluation are still limited. We propose a set of novel quality criteria, allowing for a more detailed…

计算机视觉与模式识别 · 计算机科学 2018-05-04 Tobias Koch , Lukas Liebel , Friedrich Fraundorfer , Marco Körner

Image deblurring aims to recover the latent sharp image from its blurry counterpart and has a wide range of applications in computer vision. The Convolution Neural Networks (CNNs) have performed well in this domain for many years, and until…

计算机视觉与模式识别 · 计算机科学 2023-02-07 Lingyan Ruan , Mojtaba Bemana , Hans-peter Seidel , Karol Myszkowski , Bin Chen

Background and Aim: Over-fitting issue has been the reason behind deep learning technology not being successfully implemented in oral cancer images classification. The aims of this research were reducing overfitting for accurately producing…

图像与视频处理 · 电气工程与系统科学 2022-08-17 Prakrit Joshi , Omar Hisham Alsadoon , Abeer Alsadoon , Nada AlSallami , Tarik A. Rashid , P. W. C. Prasad , Sami Haddad

Depth perception is crucial for spatial understanding and has traditionally been achieved through stereoscopic imaging. However, the precision of depth estimation using stereoscopic methods depends on the accurate calibration of binocular…

机器人学 · 计算机科学 2025-11-25 Muhamamd Ishfaq Hussain , Zubia Naz , Muhammad Aasim Rafique , Moongu Jeon

Dense depth estimation and 3D reconstruction of a surgical scene are crucial steps in computer assisted surgery. Recent work has shown that depth estimation from a stereo images pair could be solved with convolutional neural networks.…

图像与视频处理 · 电气工程与系统科学 2021-07-24 Baoru Huang , Jianqing Zheng , Anh Nguyen , David Tuch , Kunal Vyas , Stamatia Giannarou , Daniel S. Elson

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…

计算机视觉与模式识别 · 计算机科学 2018-11-07 Thanuja Dharmasiri , Andrew Spek , Tom Drummond

Monocular depth estimation involves predicting depth from a single RGB image and plays a crucial role in applications such as autonomous driving, robotic navigation, 3D reconstruction, etc. Recent advancements in learning-based methods have…

计算机视觉与模式识别 · 计算机科学 2025-02-05 Jingming Xia , Guanqun Cao , Guang Ma , Yiben Luo , Qinzhao Li , John Oyekan

Depth sensing is of paramount importance for unmanned aerial and autonomous vehicles. Nonetheless, contemporary monocular depth estimation methods employing complex deep neural networks within Convolutional Neural Networks are inadequately…

计算机视觉与模式识别 · 计算机科学 2024-06-10 Cheng Feng , Congxuan Zhang , Zhen Chen , Weiming Hu , Liyue Ge

Underwater monocular depth estimation serves as the foundation for tasks such as 3D reconstruction of underwater scenes. However, due to the influence of light and medium, the underwater environment undergoes a distinctive imaging process,…

计算机视觉与模式识别 · 计算机科学 2024-07-26 Jian Wang , Jing Wang , Shenghui Rong , Bo He

We present an algorithm for reconstructing dense, geometrically consistent depth for all pixels in a monocular video. We leverage a conventional structure-from-motion reconstruction to establish geometric constraints on pixels in the video.…

计算机视觉与模式识别 · 计算机科学 2020-08-28 Xuan Luo , Jia-Bin Huang , Richard Szeliski , Kevin Matzen , Johannes Kopf

Convolutional neural networks (CNNs) have achieved state-of-the-art performance for automatic medical image segmentation. However, they have not demonstrated sufficiently accurate and robust results for clinical use. In addition, they are…

Monocular depth estimation is crucial for tracking and reconstruction algorithms, particularly in the context of surgical videos. However, the inherent challenges in directly obtaining ground truth depth maps during surgery render…

计算机视觉与模式识别 · 计算机科学 2024-10-11 Ange Lou , Yamin Li , Yike Zhang , Jack Noble

Self-supervised monocular depth estimation methods aim to be used in critical applications such as autonomous vehicles for environment analysis. To circumvent the potential imperfections of these approaches, a quantification of the…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Rémi Marsal , Florian Chabot , Angelique Loesch , William Grolleau , Hichem Sahbi

Deep Convolutional Neural Networks (CNNs) for image classification successively alternate convolutions and downsampling operations, such as pooling layers or strided convolutions, resulting in lower resolution features the deeper the…

计算机视觉与模式识别 · 计算机科学 2022-09-29 Ioannis Vezakis , Antonios Vezakis , Sofia Gourtsoyianni , Vassilis Koutoulidis , George K. Matsopoulos , Dimitrios Koutsouris