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In this work, we propose an open-vocabulary object detection method that, based on image-caption pairs, learns to detect novel object classes along with a given set of known classes. It is a two-stage training approach that first uses a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Maria A. Bravo , Sudhanshu Mittal , Thomas Brox

Open-vocabulary object detection (OVOD) aims at localizing and recognizing visual objects from novel classes unseen at the training time. Whereas, empirical studies reveal that advanced detectors generally assign lower scores to those novel…

Computer Vision and Pattern Recognition · Computer Science 2024-04-15 Yanhao Zheng , Kai Liu

Open-vocabulary object detection (OVOD) aims to recognize novel objects whose categories are not included in the training set. In order to classify these unseen classes during training, many OVOD frameworks leverage the zero-shot capability…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Joonhyun Jeong , Geondo Park , Jayeon Yoo , Hyungsik Jung , Heesu Kim

Open-vocabulary object detection (OVD) aims to scale up vocabulary size to detect objects of novel categories beyond the training vocabulary. Recent work resorts to the rich knowledge in pre-trained vision-language models. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Peixian Chen , Kekai Sheng , Mengdan Zhang , Mingbao Lin , Yunhang Shen , Shaohui Lin , Bo Ren , Ke Li

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

To identify objects beyond predefined categories, open-vocabulary aerial object detection (OVAD) leverages the zero-shot capabilities of visual-language models (VLMs) to generalize from base to novel categories. Existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Jianhang Yao , Yongbin Zheng , Siqi Lu , Wanying Xu , Peng Sun

We aim at advancing open-vocabulary object detection, which detects objects described by arbitrary text inputs. The fundamental challenge is the availability of training data. It is costly to further scale up the number of classes contained…

Computer Vision and Pattern Recognition · Computer Science 2022-05-13 Xiuye Gu , Tsung-Yi Lin , Weicheng Kuo , Yin Cui

Open-vocabulary object detection (OVOD) has recently gained significant attention as a crucial step toward achieving human-like visual intelligence. Existing OVOD methods extend target vocabulary from pre-defined categories to open-world by…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Sunghun Kang , Junbum Cha , Jonghwan Mun , Byungseok Roh , Chang D. Yoo

X-ray prohibited item detection is an essential component of security check and categories of prohibited item are continuously increasing in accordance with the latest laws. Previous works all focus on close-set scenarios, which can only…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Shuyang Lin , Tong Jia , Hao Wang , Bowen Ma , Mingyuan Li , Dongyue Chen

Open-Vocabulary Object Detection (OVOD) has achieved remarkable success in generalizing to novel categories. However, this success often rests on the implicit assumption of domain stationarity. In this work, we provide a principled revisit…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Xiaoran Xu , Xiaoshan Yang , Jiangang Yang , Yifan Xu , Jian Liu , Changsheng Xu

Open-vocabulary object detection (OVD) models are considered to be Large Multi-modal Models (LMM), due to their extensive training data and a large number of parameters. Mainstream OVD models prioritize object coarse-grained category rather…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Yuqi Ma , Mengyin Liu , Chao Zhu , Xu-Cheng Yin

Due to its extensive applications, aerial image object detection has long been a hot topic in computer vision. In recent years, advancements in Unmanned Aerial Vehicles (UAV) technology have further propelled this field to new heights,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Yang Zhou , Junjie Li , CongYang Ou , Dawei Yan , Haokui Zhang , Xizhe Xue

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 is the task of accurately detecting objects from a candidate vocabulary list that includes both base and novel categories. Currently, numerous open-vocabulary detectors have achieved success by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Ruizhe Zeng , Lu Zhang , Xu Yang , Zhiyong Liu

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

Open-vocabulary object detection (OVD) has been studied with Vision-Language Models (VLMs) to detect novel objects beyond the pre-trained categories. Previous approaches improve the generalization ability to expand the knowledge of the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Jooyeon Kim , Eulrang Cho , Sehyung Kim , Hyunwoo J. Kim

Vision-language models such as CLIP have boosted the performance of open-vocabulary object detection, where the detector is trained on base categories but required to detect novel categories. Existing methods leverage CLIP's strong…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Cheng Shi , Sibei Yang

In this paper, we consider the problem of simultaneously detecting objects and inferring their visual attributes in an image, even for those with no manual annotations provided at the training stage, resembling an open-vocabulary scenario.…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Keyan Chen , Xiaolong Jiang , Yao Hu , Xu Tang , Yan Gao , Jianqi Chen , Weidi Xie

Open-Vocabulary Object Detection (OVOD) aims to enable detectors to generalize across categories by leveraging semantic information. Although existing methods are pretrained on large vision-language datasets, their inference is still…

Artificial Intelligence · Computer Science 2026-04-21 Chujie Wang , Jianyu Lu , Zhiyuan Luo , Xi Chen , Chu He

Open vocabulary object detection (OVD) aims at seeking an optimal object detector capable of recognizing objects from both base and novel categories. Recent advances leverage knowledge distillation to transfer insightful knowledge from…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Jiaming Li , Jiacheng Zhang , Jichang Li , Ge Li , Si Liu , Liang Lin , Guanbin Li