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Accuracy of depth estimation from static images has been significantly improved recently, by exploiting hierarchical features from deep convolutional neural networks (CNNs). Compared with static images, vast information exists among video…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Haokui Zhang , Chunhua Shen , Ying Li , Yuanzhouhan Cao , Yu Liu , Youliang Yan

Automatic surgical workflow recognition in video is an essentially fundamental yet challenging problem for developing computer-assisted and robotic-assisted surgery. Existing approaches with deep learning have achieved remarkable…

Machine Learning · Computer Science 2020-04-27 Xueying Shi , Yueming Jin , Qi Dou , Pheng-Ann Heng

Data-driven methods have shown tremendous progress in medical image analysis. In this context, deep learning-based supervised methods are widely popular. However, they require a large amount of training data and face issues in…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Ziang Xu , Jens Rittscher , Sharib Ali

Recognizing the phases of a laparoscopic surgery (LS) operation form its video constitutes a fundamental step for efficient content representation, indexing and retrieval in surgical video databases. In the literature, most techniques focus…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Constantinos Loukas

Response evaluation criteria in solid tumors (RECIST) is the standard measurement for tumor extent to evaluate treatment responses in cancer patients. As such, RECIST annotations must be accurate. However, RECIST annotations manually…

Computer Vision and Pattern Recognition · Computer Science 2018-06-26 Youbao Tang , Adam P. Harrison , Mohammadhadi Bagheri , Jing Xiao , Ronald M. Summers

To assist surgeons in the operating theatre, surgical phase recognition is critical for developing computer-assisted surgical systems, which requires comprehensive understanding of surgical videos. Although existing studies made great…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Zhen Chen , Yuhao Zhai , Jun Zhang , Jinqiao Wang

Surgical tool localization is an essential task for the automatic analysis of endoscopic videos. In the literature, existing methods for tool localization, tracking and segmentation require training data that is fully annotated, thereby…

Computer Vision and Pattern Recognition · Computer Science 2018-07-19 Armine Vardazaryan , Didier Mutter , Jacques Marescaux , Nicolas Padoy

Skeleton-based action recognition has attracted considerable attention due to its compact representation of the human body's skeletal sructure. Many recent methods have achieved remarkable performance using graph convolutional networks…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Jungho Lee , Minhyeok Lee , Suhwan Cho , Sungmin Woo , Sungjun Jang , Sangyoun Lee

Minimally invasive surgery can benefit significantly from automated surgical tool detection, enabling advanced analysis and assistance. However, the limited availability of annotated data in surgical settings poses a challenge for training…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Ana Davila , Jacinto Colan , Yasuhisa Hasegawa

Polyps are early cancer indicators, so assessing occurrences of polyps and their removal is critical. They are observed through a colonoscopy screening procedure that generates a stream of video frames. Segmenting polyps in their natural…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Ziang Xu , Jens Rittscher , Sharib Ali

An important task at the onset of a laparoscopic cholecystectomy (LC) operation is the inspection of gallbladder (GB) to evaluate the thickness of its wall, presence of inflammation and extent of fat. Difficulty in visualization of the GB…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 C. Loukas , A. Gazis , D. Schizas

In order to provide the right type of assistance at the right time, computer-assisted surgery systems need context awareness. To achieve this, methods for surgical workflow analysis are crucial. Currently, convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2018-10-05 Isabel Funke , Alexander Jenke , Sören Torge Mees , Jürgen Weitz , Stefanie Speidel , Sebastian Bodenstedt

Temporal localization in untrimmed videos, which aims to identify specific timestamps, is crucial for video understanding but remains challenging. This task encompasses several subtasks, including temporal action localization, temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Chen-Lin Zhang , Lin Sui , Shuming Liu , Fangzhou Mu , Zhangcheng Wang , Bernard Ghanem

A major obstacle to building models for effective semantic segmentation, and particularly video semantic segmentation, is a lack of large and well annotated datasets. This bottleneck is particularly prohibitive in highly specialized and…

Surgical instrument segmentation is instrumental to minimally invasive surgeries and related applications. Most previous methods formulate this task as single-frame-based instance segmentation while ignoring the natural temporal and stereo…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Qiyuan Wang , Shang Zhao , Zikang Xu , S Kevin Zhou

Skeleton-based action recognition is an important task that requires the adequate understanding of movement characteristics of a human action from the given skeleton sequence. Recent studies have shown that exploring spatial and temporal…

Computer Vision and Pattern Recognition · Computer Science 2019-04-01 Chenyang Si , Wentao Chen , Wei Wang , Liang Wang , Tieniu Tan

The intersection of medical imaging and artificial intelligence has become an important research direction in intelligent medical treatment, particularly in the analysis of medical images using deep learning for clinical diagnosis. Despite…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Xiangxiang Cui , Zhongyu Li , Xiayue Fan , Peng Huang , Ying Wang , Meng Yang , Shi Chang , Jihua Zhu

Phonetic speech transcription is crucial for fine-grained linguistic analysis and downstream speech applications. While Connectionist Temporal Classification (CTC) is a widely used approach for such tasks due to its efficiency, it often…

Parotid gland lesion segmentation is essential for the treatment of parotid gland diseases. However, due to the variable size and complex lesion boundaries, accurate parotid gland lesion segmentation remains challenging. Recently, the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Zhongyuan Wu , Chuan-Xian Ren , Yu Wang , Xiaohua Ban , Jianning Xiao , Xiaohui Duan

The segmentation of medical images is a fundamental step in automated clinical decision support systems. Existing medical image segmentation methods based on supervised deep learning, however, remain problematic because of their reliance on…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Euijoon Ahn , Dagan Feng , Jinman Kim