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A key feature of magnetic resonance (MR) imaging is its ability to manipulate how the intrinsic tissue parameters of the anatomy ultimately contribute to the contrast properties of the final, acquired image. This flexibility, however, can…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Dzung L. Pham , Snehashis Roy

Text-based video segmentation aims to segment an actor in video sequences by specifying the actor and its performing action with a textual query. Previous methods fail to explicitly align the video content with the textual query in a…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Jianhua Yang , Yan Huang , Kai Niu , Linjiang Huang , Zhanyu Ma , Liang Wang

We present a method for segmenting an arbitrary number of moving objects in image sequences using the geometry of 6 points in 2D to infer motion consistency. The method has been evaluated on the Hopkins 155 database and surpasses current…

Computer Vision and Pattern Recognition · Computer Science 2010-12-14 Vasileios Zografos , Klas Nordberg , Liam Ellis

This letter presents a novel approach to extract reliable dense and long-range motion trajectories of articulated human in a video sequence. Compared with existing approaches that emphasize temporal consistency of each tracked point, we…

Computer Vision and Pattern Recognition · Computer Science 2016-03-30 Yuanyuan Wu , Xiaohai He , Byeongkeun Kang , Haiying Song , Truong Q. Nguyen

Precise segmentation and anatomical identification of the vertebrae provides the basis for automatic analysis of the spine, such as detection of vertebral compression fractures or other abnormalities. Most dedicated spine CT and MR scans as…

Computer Vision and Pattern Recognition · Computer Science 2019-02-15 Nikolas Lessmann , Bram van Ginneken , Pim A. de Jong , Ivana Išgum

Detecting actions in untrimmed videos is an important yet challenging task. In this paper, we present the structured segment network (SSN), a novel framework which models the temporal structure of each action instance via a structured…

Computer Vision and Pattern Recognition · Computer Science 2017-09-19 Yue Zhao , Yuanjun Xiong , Limin Wang , Zhirong Wu , Xiaoou Tang , Dahua Lin

Active learning is a unique abstraction of machine learning techniques where the model/algorithm could guide users for annotation of a set of data points that would be beneficial to the model, unlike passive machine learning. The primary…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Vishwesh Nath , Dong Yang , Bennett A. Landman , Daguang Xu , Holger R. Roth

The training of deep neural networks is inherently a nonconvex optimization problem, yet standard approaches such as stochastic gradient descent (SGD) require simultaneous updates to all parameters, often leading to unstable convergence and…

Machine Learning · Computer Science 2025-08-07 Chengcheng Yan , Jiawei Xu , Zheng Peng , Qingsong Wang

Significant strides have been made using large vision-language models, like Stable Diffusion (SD), for a variety of downstream tasks, including image editing, image correspondence, and 3D shape generation. Inspired by these advancements, we…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Aliasghar Khani , Saeid Asgari Taghanaki , Aditya Sanghi , Ali Mahdavi Amiri , Ghassan Hamarneh

Skeleton-based multi-entity action recognition is a challenging task aiming to identify interactive actions or group activities involving multiple diverse entities. Existing models for individuals often fall short in this task due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Yuhang Wen , Mengyuan Liu , Songtao Wu , Beichen Ding

Semantic segmentation of multichannel images is a fundamental task for many applications. Selecting an appropriate channel combination from the original multichannel image can improve the accuracy of semantic segmentation and reduce the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Yuanzhi Cai , Jagannath Aryal , Yuan Fang , Hong Huang , Lei Fan

Interactive segmentation has gained significant attention for its application in human-computer interaction and data annotation. To address the target scale variation issue in interactive segmentation, a novel multi-scale token adaptation…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Long Xu , Shanghong Li , Yongquan Chen , Jun Luo , Shiwu Lai

Human-object interaction segmentation is a fundamental task of daily activity understanding, which plays a crucial role in applications such as assistive robotics, healthcare, and autonomous systems. Most existing learning-based methods…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Hao Xing , Kai Zhe Boey , Gordon Cheng

Segmenting object instances is a key task in machine perception, with safety-critical applications in robotics and autonomous driving. We introduce a novel approach to instance segmentation that jointly leverages measurements from multiple…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Alex Zihao Zhu , Vincent Casser , Reza Mahjourian , Henrik Kretzschmar , Sören Pirk

Partially-supervised instance segmentation is a task which requests segmenting objects from novel unseen categories via learning on limited seen categories with annotated masks thus eliminating demands of heavy annotation burden. The key to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Xuehui Wang , Kai Zhao , Ruixin Zhang , Shouhong Ding , Yan Wang , Wei Shen

Human action recognition in 3D skeleton sequences has attracted a lot of research attention. Recently, Long Short-Term Memory (LSTM) networks have shown promising performance in this task due to their strengths in modeling the dependencies…

Computer Vision and Pattern Recognition · Computer Science 2018-02-14 Jun Liu , Gang Wang , Ling-Yu Duan , Kamila Abdiyeva , Alex C. Kot

Human skeleton-based action recognition has long been an indispensable aspect of artificial intelligence. Current state-of-the-art methods tend to consider only the dependencies between connected skeletal joints, limiting their ability to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Yuheng Yang

Topological alignments and snakes are used in image processing, particularly in locating object boundaries. Both of them have their own advantages and limitations. To improve the overall image boundary detection system, we focused on…

Computer Vision and Pattern Recognition · Computer Science 2011-06-03 Ashraf A. Aly , Safaai Bin Deris , Nazar Zaki

Since labeling medical image data is a costly and labor-intensive process, active learning has gained much popularity in the medical image segmentation domain in recent years. A variety of active learning strategies have been proposed in…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Josafat-Mattias Burmeister , Marcel Fernandez Rosas , Johannes Hagemann , Jonas Kordt , Jasper Blum , Simon Shabo , Benjamin Bergner , Christoph Lippert

With the success of deep learning in classifying short trimmed videos, more attention has been focused on temporally segmenting and classifying activities in long untrimmed videos. State-of-the-art approaches for action segmentation utilize…

Computer Vision and Pattern Recognition · Computer Science 2020-09-04 Shijie Li , Yazan Abu Farha , Yun Liu , Ming-Ming Cheng , Juergen Gall