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We propose a novel video object segmentation algorithm based on pixel-level matching using Convolutional Neural Networks (CNN). Our network aims to distinguish the target area from the background on the basis of the pixel-level similarity…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Jae Shin Yoon , Francois Rameau , Junsik Kim , Seokju Lee , Seunghak Shin , In So Kweon

In a dynamic environment, an agent with a limited field of view/resource cannot fully observe the scene before attempting to parse it. The deployment of common semantic segmentation architectures is not feasible in such settings. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Soroush Seifi , Tinne Tuytelaars

Many NLP pipelines split text into sentences as one of the crucial preprocessing steps. Prior sentence segmentation tools either rely on punctuation or require a considerable amount of sentence-segmented training data: both central…

Computation and Language · Computer Science 2023-05-31 Benjamin Minixhofer , Jonas Pfeiffer , Ivan Vulić

This paper focuses on weakly-supervised action alignment, where only the ordered sequence of video-level actions is available for training. We propose a novel Duration Network, which captures a short temporal window of the video and learns…

Computer Vision and Pattern Recognition · Computer Science 2020-11-23 Reza Ghoddoosian , Saif Sayed , Vassilis Athitsos

Event perception tasks such as recognizing and localizing actions in streaming videos are essential for scaling to real-world application contexts. We tackle the problem of learning actor-centered representations through the notion of…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Sathyanarayanan N. Aakur , Sudeep Sarkar

Identifying human actions in complex scenes is widely considered as a challenging research problem due to the unpredictable behaviors and variation of appearances and postures. For extracting variations in motion and postures, trajectories…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Tauseef Ali , Eissa Jaber Alreshidi

Text-based video segmentation aims to segment the target object in a video based on a describing sentence. Incorporating motion information from optical flow maps with appearance and linguistic modalities is crucial yet has been largely…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Wangbo Zhao , Kai Wang , Xiangxiang Chu , Fuzhao Xue , Xinchao Wang , Yang You

In many cases, such as trajectories clustering and classification, we often divide a trajectory into segments as preprocessing. In this paper, we propose a trajectory semantic segmentation method based on learned behavior models. In the…

Computer Vision and Pattern Recognition · Computer Science 2018-02-28 Daisuke Ogawa , Toru Tamaki , Bisser Raytchev , Kazufumi Kaneda

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

This paper proposes an end-to-end trainable network, SegFlow, for simultaneously predicting pixel-wise object segmentation and optical flow in videos. The proposed SegFlow has two branches where useful information of object segmentation and…

Computer Vision and Pattern Recognition · Computer Science 2017-09-21 Jingchun Cheng , Yi-Hsuan Tsai , Shengjin Wang , Ming-Hsuan Yang

The video action segmentation task is regularly explored under weaker forms of supervision, such as transcript supervision, where a list of actions is easier to obtain than dense frame-wise labels. In this formulation, the task presents…

Computer Vision and Pattern Recognition · Computer Science 2022-01-24 John Ridley , Huseyin Coskun , David Joseph Tan , Nassir Navab , Federico Tombari

Referring image segmentation is a challenging task that involves generating pixel-wise segmentation masks based on natural language descriptions. The complexity of this task increases with the intricacy of the sentences provided. Existing…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Hai Nguyen-Truong , E-Ro Nguyen , Tuan-Anh Vu , Minh-Triet Tran , Binh-Son Hua , Sai-Kit Yeung

Audiovisual segmentation (AVS) aims to identify visual regions corresponding to sound sources, playing a vital role in video understanding, surveillance, and human-computer interaction. Traditional AVS methods depend on large-scale…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Seung-jae Lee , Paul Hongsuck Seo

Breaking down the structure of long texts into semantically coherent segments makes the texts more readable and supports downstream applications like summarization and retrieval. Starting from an apparent link between text coherence and…

Computation and Language · Computer Science 2020-01-06 Goran Glavaš , Swapna Somasundaran

Direct speech-to-text translation (ST) models are usually trained on corpora segmented at sentence level, but at inference time they are commonly fed with audio split by a voice activity detector (VAD). Since VAD segmentation is not…

Computation and Language · Computer Science 2020-08-06 Marco Gaido , Mattia Antonino Di Gangi , Matteo Negri , Mauro Cettolo , Marco Turchi

Inspired by recent advances of deep learning in instance segmentation and object tracking, we introduce video object segmentation problem as a concept of guided instance segmentation. Our model proceeds on a per-frame basis, guided by the…

Computer Vision and Pattern Recognition · Computer Science 2019-02-05 Anna Khoreva , Federico Perazzi , Rodrigo Benenson , Bernt Schiele , Alexander Sorkine-Hornung

Word segmentation, the problem of finding word boundaries in speech, is of interest for a range of tasks. Previous papers have suggested that for sequence-to-sequence models trained on tasks such as speech translation or speech recognition,…

Computation and Language · Computer Science 2021-09-22 Ramon Sanabria , Hao Tang , Sharon Goldwater

The task of video captioning, that is, the automatic generation of sentences describing a sequence of actions in a video, has attracted an increasing attention recently. The complex and high-dimensional representation of video data makes it…

Computer Vision and Pattern Recognition · Computer Science 2020-10-13 Menatallh Hammad , May Hammad , Mohamed Elshenawy

Segments that span contiguous parts of inputs, such as phonemes in speech, named entities in sentences, actions in videos, occur frequently in sequence prediction problems. Segmental models, a class of models that explicitly hypothesizes…

Computation and Language · Computer Science 2018-06-14 Hao Tang

Semi-supervised video object segmentation is a task of segmenting the target object in a video sequence given only a mask annotation in the first frame. The limited information available makes it an extremely challenging task. Most previous…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Yunyao Mao , Ning Wang , Wengang Zhou , Houqiang Li