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Open-vocabulary Video Instance Segmentation (OpenVIS) can simultaneously detect, segment, and track arbitrary object categories in a video, without being constrained to categories seen during training. In this work, we propose InstFormer, a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Pinxue Guo , Tony Huang , Peiyang He , Xuefeng Liu , Tianjun Xiao , Zhaoyu Chen , Wenqiang Zhang

Video object segmentation (VOS) aims to distinguish and track target objects in a video. Despite the excellent performance achieved by off-the-shell VOS models, existing VOS benchmarks mainly focus on short-term videos lasting about 5…

Computer Vision and Pattern Recognition · Computer Science 2024-05-02 Lingyi Hong , Zhongying Liu , Wenchao Chen , Chenzhi Tan , Yuang Feng , Xinyu Zhou , Pinxue Guo , Jinglun Li , Zhaoyu Chen , Shuyong Gao , Wei Zhang , Wenqiang Zhang

We introduce Open3DIS, a novel solution designed to tackle the problem of Open-Vocabulary Instance Segmentation within 3D scenes. Objects within 3D environments exhibit diverse shapes, scales, and colors, making precise instance-level…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Phuc D. A. Nguyen , Tuan Duc Ngo , Evangelos Kalogerakis , Chuang Gan , Anh Tran , Cuong Pham , Khoi Nguyen

We present OpenSeeD, a simple Open-vocabulary Segmentation and Detection framework that jointly learns from different segmentation and detection datasets. To bridge the gap of vocabulary and annotation granularity, we first introduce a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Hao Zhang , Feng Li , Xueyan Zou , Shilong Liu , Chunyuan Li , Jianfeng Gao , Jianwei Yang , Lei Zhang

Continual learning in real-world scenarios is a major challenge. A general continual learning model should have a constant memory size and no predefined task boundaries, as is the case in semi-supervised Video Object Segmentation (VOS),…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Amir Nazemi , Zeyad Moustafa , Paul Fieguth

Existing methods enhance open-vocabulary object detection by leveraging the robust open-vocabulary recognition capabilities of Vision-Language Models (VLMs), such as CLIP.However, two main challenges emerge:(1) A deficiency in concept…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Penghui Du , Yu Wang , Yifan Sun , Luting Wang , Yue Liao , Gang Zhang , Errui Ding , Yan Wang , Jingdong Wang , Si Liu

Major advancements have been made in the field of object detection and segmentation recently. However, when it comes to rare categories, the state-of-the-art methods fail to detect them, resulting in a significant performance gap between…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Konstantinos Panagiotis Alexandridis , Jiankang Deng , Anh Nguyen , Shan Luo

Tree instance segmentation of airborne laser scanning (ALS) data is of utmost importance for forest monitoring, but remains challenging due to variations in the data caused by factors such as sensor resolution, vegetation state at…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Swann Emilien Céleste Destouches , Jesse Lahaye , Laurent Valentin Jospin , Jan Skaloud

Weakly supervised object detection (WSOD), where a detector is trained with only image-level annotations, is attracting more and more attention. As a method to obtain a well-performing detector, the detector and the instance labels are…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Satoshi Kosugi , Toshihiko Yamasaki , Kiyoharu Aizawa

Existing studies typically investigate domain shift and category shift as independent problems, however, in real-world scenarios, the two types of shifts often occur simultaneously and interact, leading to significant degradation in…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Yupeng Zhang , Ruize Han , Fangnan Zhou , Wei Feng , Liang Wan

Open-vocabulary semantic segmentation aims to segment an image into semantic regions according to text descriptions, which may not have been seen during training. Recent two-stage methods first generate class-agnostic mask proposals and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Feng Liang , Bichen Wu , Xiaoliang Dai , Kunpeng Li , Yinan Zhao , Hang Zhang , Peizhao Zhang , Peter Vajda , Diana Marculescu

An examination of object recognition challenge leaderboards (ILSVRC, PASCAL-VOC) reveals that the top-performing classifiers typically exhibit small differences amongst themselves in terms of error rate/mAP. To better differentiate the top…

Computer Vision and Pattern Recognition · Computer Science 2016-11-28 Ravi Kiran Sarvadevabhatla , Shanthakumar Venkatraman , R. Venkatesh Babu

Weakly Supervised Object Detection (WSOD) is a task that detects objects in an image using a model trained only on image-level annotations. Current state-of-the-art models benefit from self-supervised instance-level supervision, but since…

Computer Vision and Pattern Recognition · Computer Science 2022-09-05 Jinhwan Seo , Wonho Bae , Danica J. Sutherland , Junhyug Noh , Daijin Kim

Class imbalance, which is also called long-tailed distribution, is a common problem in classification tasks based on machine learning. If it happens, the minority data will be overwhelmed by the majority, which presents quite a challenge…

Machine Learning · Computer Science 2023-03-29 Jia-Chen Zhao

Long-tail class incremental learning (LT CIL) remains highly challenging because the scarcity of samples in tail classes not only hampers their learning but also exacerbates catastrophic forgetting under continuously evolving and imbalanced…

Artificial Intelligence · Computer Science 2026-03-24 Xi Wang , Xu Yang , Donghao Sun , Cheng Deng

Audio-Visual Segmentation (AVS) aims to produce pixel-level masks of sound producing objects in videos, by jointly learning from audio and visual signals. However, real-world environments are inherently dynamic, causing audio and visual…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Siddeshwar Raghavan , Gautham Vinod , Bruce Coburn , Fengqing Zhu

Existing video instance segmentation (VIS) approaches generally follow a closed-world assumption, where only seen category instances are identified and spatio-temporally segmented at inference. Open-world formulation relaxes the close-world…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Omkar Thawakar , Sanath Narayan , Hisham Cholakkal , Rao Muhammad Anwer , Salman Khan , Jorma Laaksonen , Mubarak Shah , Fahad Shahbaz Khan

We propose an approach for Open-World Instance Segmentation (OWIS), a task that aims to segment arbitrary unknown objects in images by generalizing from a limited set of annotated object classes during training. Our Segment Object System…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Christian Wilms , Tim Rolff , Maris Hillemann , Robert Johanson , Simone Frintrop

We present a new open-vocabulary detection approach based on region-centric image-language pretraining to bridge the gap between image-level pretraining and open-vocabulary object detection. At the pretraining phase, we incorporate the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-22 Dahun Kim , Anelia Angelova , Weicheng Kuo

The goal of this paper is open-vocabulary object detection (OVOD) $\unicode{x2013}$ building a model that can detect objects beyond the set of categories seen at training, thus enabling the user to specify categories of interest at…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Prannay Kaul , Weidi Xie , Andrew Zisserman