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We present F-VLM, a simple open-vocabulary object detection method built upon Frozen Vision and Language Models. F-VLM simplifies the current multi-stage training pipeline by eliminating the need for knowledge distillation or…

Computer Vision and Pattern Recognition · Computer Science 2023-02-27 Weicheng Kuo , Yin Cui , Xiuye Gu , AJ Piergiovanni , Anelia Angelova

Existing open-vocabulary object detection (OVD) develops methods for testing unseen categories by aligning object region embeddings with corresponding VLM features. A recent study leverages the idea that VLMs implicitly learn compositional…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Hojun Choi , Junsuk Choe , Hyunjung Shim

Open-Vocabulary Object Detection (OVOD) aims to develop the capability to detect anything. Although myriads of large-scale pre-training efforts have built versatile foundation models that exhibit impressive zero-shot capabilities to…

Computer Vision and Pattern Recognition · Computer Science 2026-01-22 Guiying Zhu , Bowen Yang , Yin Zhuang , Tong Zhang , Guanqun Wang , Zhihao Che , He Chen , Lianlin Li

Open-Vocabulary Object Detection (OVD) models break the limitations of closed-set detection, enabling the iden- tification of unseen categories through natural language prompts. However, they exhibit notable limitations in fine- grained…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Donghong Jiang , Endian Lin , Hanqing Liu , Mingjie Liu , Luoping Cui , Zhao Yang , Chuang Zhu

The task of LiDAR-based 3D Open-Vocabulary Detection (3D OVD) requires the detector to learn to detect novel objects from point clouds without off-the-shelf training labels. Previous methods focus on the learning of object-level…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Xingyu Peng , Si Liu , Chen Gao , Yan Bai , Beipeng Mu , Xiaofei Wang , Huaxia Xia

Object detection traditionally relies on fixed category sets, requiring costly re-training to handle novel objects. While Open-World and Open-Vocabulary Object Detection (OWOD and OVOD) improve flexibility, OWOD lacks semantic labels for…

Computer Vision and Pattern Recognition · Computer Science 2025-07-16 Furkan Mumcu , Michael J. Jones , Anoop Cherian , Yasin Yilmaz

Open-vocabulary object detection (OVOD) aims to detect the objects beyond the set of classes observed during training. This work introduces a straightforward and efficient strategy that utilizes pre-trained vision-language models (VLM),…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Shilin Xu , Xiangtai Li , Size Wu , Wenwei Zhang , Yunhai Tong , Chen Change Loy

The superior performances of pre-trained foundation models in various visual tasks underscore their potential to enhance the 2D models' open-vocabulary ability. Existing methods explore analogous applications in the 3D space. However, most…

Computer Vision and Pattern Recognition · Computer Science 2023-12-25 Dongmei Zhang , Chang Li , Ray Zhang , Shenghao Xie , Wei Xue , Xiaodong Xie , Shanghang Zhang

Large Language Models (LLMs) have become a crucial tool in Visual Question Answering (VQA) for handling knowledge-intensive questions in few-shot or zero-shot scenarios. However, their reliance on massive training datasets often causes them…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Quanxing Xu , Ling Zhou , Feifei Zhang , Jinyu Tian , Rubing Huang

Existing open-vocabulary object detectors typically enlarge their vocabulary sizes by leveraging different forms of weak supervision. This helps generalize to novel objects at inference. Two popular forms of weak-supervision used in…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Hanoona Rasheed , Muhammad Maaz , Muhammad Uzair Khattak , Salman Khan , Fahad Shahbaz Khan

Open-vocabulary object detection (OVOD) enables models to detect any object category, including unseen ones. Benefiting from large-scale pre-training, existing OVOD methods achieve strong detection performance on general scenarios (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Weihao Cao , Runqi Wang , Xiaoyue Duan , Jinchao Zhang , Ang Yang , Liping Jing

As the most fundamental scene understanding tasks, object detection and segmentation have made tremendous progress in deep learning era. Due to the expensive manual labeling cost, the annotated categories in existing datasets are often…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Chaoyang Zhu , Long Chen

Vision-language modeling has enabled open-vocabulary tasks where predictions can be queried using any text prompt in a zero-shot manner. Existing open-vocabulary tasks focus on object classes, whereas research on object attributes is…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 María A. Bravo , Sudhanshu Mittal , Simon Ging , Thomas Brox

The challenge of open-vocabulary recognition lies in the model has no clue of new categories it is applied to. Existing works have proposed different methods to embed category cues into the model, \eg, through few-shot fine-tuning,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Zehong Ma , Shiliang Zhang , Longhui Wei , Qi Tian

Recent vision-language pre-trained models (VL-PTMs) have shown remarkable success in open-vocabulary tasks. However, downstream use cases often involve further fine-tuning of VL-PTMs, which may distort their general knowledge and impair…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Lin Zhu , Yifeng Yang , Qinying Gu , Xinbing Wang , Chenghu Zhou , Nanyang Ye

Open-vocabulary detection (OVD) aims to detect novel objects without instance-level annotations to achieve open-world object detection at a lower cost. Existing OVD methods mainly rely on the powerful open-vocabulary image-text alignment…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Zishuo Wang , Wenhao Zhou , Jinglin Xu , Yuxin Peng

Learning from pseudo-labels that generated with VLMs~(Vision Language Models) has been shown as a promising solution to assist open vocabulary detection (OVD) in recent studies. However, due to the domain gap between VLM and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Kuo Wang , Lechao Cheng , Weikai Chen , Pingping Zhang , Liang Lin , Fan Zhou , Guanbin Li

Conventional object detectors typically operate under a closed-set assumption, limiting recognition to a predefined set of base classes seen during training. Open-vocabulary object detection (OVD) addresses this limitation by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Sanghoon Lee , Geon Lee , Hyekang Park , Bumsub Ham

Recent advancements in large vision-language models enabled visual object detection in open-vocabulary scenarios, where object classes are defined in free-text formats during inference. In this paper, we aim to probe the state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Lorenzo Bianchi , Fabio Carrara , Nicola Messina , Claudio Gennaro , Fabrizio Falchi

Open-vocabulary segmentation models often struggle to generalize to unseen combinations of object categories and attributes, because fine-grained descriptions are typically encoded as holistic sentences that entangle multiple semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Chenhao Wang , Yingrui Ji , Yu Meng , Yao Zhu