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Zero-shot out-of-vocabulary detection (ZS-OOVD) aims to accurately recognize objects of in-vocabulary (IV) categories provided at zero-shot inference, while simultaneously rejecting undefined ones (out-of-vocabulary, OOV) that lack…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Binyi Su , Chenghao Huang , Haiyong Chen

Recent studies have shown promising performance in open-vocabulary object detection (OVD) by utilizing pseudo labels (PLs) from pretrained vision and language models (VLMs). However, teacher-student self-training, a powerful and widely used…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Shiyu Zhao , Samuel Schulter , Long Zhao , Zhixing Zhang , Vijay Kumar B. G , Yumin Suh , Manmohan Chandraker , Dimitris N. Metaxas

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

Aerial object detection plays a crucial role in numerous applications. However, most existing methods focus on detecting predefined object categories, limiting their applicability in real-world open scenarios. In this paper, we extend…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Guoting Wei , Xia Yuan , Yu Liu , Zhenhao Shang , Xizhe Xue , Peng Wang , Kelu Yao , Chunxia Zhao , Haokui Zhang , Rong Xiao

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

Open-vocabulary object detection (OVD), detecting specific classes of objects using only their linguistic descriptions (e.g., class names) without any image samples, has garnered significant attention. However, in real-world applications,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Yusuke Hosoya , Masanori Suganuma , Takayuki Okatani

Open-vocabulary object detection (OVOD) aims to detect known and unknown objects in the open world by leveraging text prompts. Benefiting from the emergence of large-scale vision--language pre-trained models, OVOD has demonstrated strong…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Jiaming Liang , Yifeng Zhan , Chunlin Liu , Weihua Zheng , Bingye Peng , Qiwei Liang , Boyang Cai , Xiaochun Mai , Qiang Nie

Existing object detection methods are bounded in a fixed-set vocabulary by costly labeled data. When dealing with novel categories, the model has to be retrained with more bounding box annotations. Natural language supervision is an…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Chuang Lin , Peize Sun , Yi Jiang , Ping Luo , Lizhen Qu , Gholamreza Haffari , Zehuan Yuan , Jianfei Cai

This paper addresses the challenging problem of open-vocabulary object detection (OVOD) where an object detector must identify both seen and unseen classes in test images without labeled examples of the unseen classes in training. A typical…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Chau Pham , Truong Vu , Khoi Nguyen

The goal of this work is to establish a scalable pipeline for expanding an object detector towards novel/unseen categories, using zero manual annotations. To achieve that, we make the following four contributions: (i) in pursuit of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Chengjian Feng , Yujie Zhong , Zequn Jie , Xiangxiang Chu , Haibing Ren , Xiaolin Wei , Weidi Xie , Lin Ma

Open-Vocabulary Aerial Detection (OVAD) and Remote Sensing Visual Grounding (RSVG) have emerged as two key paradigms for aerial scene understanding. However, each paradigm suffers from inherent limitations when operating in isolation: OVAD…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Guoting Wei , Xia Yuan , Yang Zhou , Haizhao Jing , Yu Liu , Xianbiao Qi , Chunxia Zhao , Haokui Zhang , Rong Xiao

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

Building robust and generic object detection frameworks requires scaling to larger label spaces and bigger training datasets. However, it is prohibitively costly to acquire annotations for thousands of categories at a large scale. We…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Shiyu Zhao , Zhixing Zhang , Samuel Schulter , Long Zhao , Vijay Kumar B. G , Anastasis Stathopoulos , Manmohan Chandraker , Dimitris Metaxas

Despite the remarkable progress in open-vocabulary object detection (OVD), a significant gap remains between the training and testing phases. During training, the RPN and RoI heads often misclassify unlabeled novel-category objects as…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Yupeng Zhang , Ruize Han , Zhiwei Chen , Wei Feng , Liang Wan

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

Foundation models, especially vision-language models (VLMs), offer compelling zero-shot object detection for applications like autonomous driving, a domain where manual labelling is prohibitively expensive. However, their detection latency…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Uday Bhaskar , Rishabh Bhattacharya , Avinash Patel , Sarthak Khoche , Praveen Anil Kulkarni , Naresh Manwani

Open-Vocabulary Object Detection (OVOD) aims to detect novel objects beyond a given set of base categories on which the detection model is trained. Recent OVOD methods focus on adapting the image-level pre-trained vision-language models…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Ruohuan Fang , Guansong Pang , Xiao Bai

Traditional object detection methods operate under the closed-set assumption, where models can only detect a fixed number of objects predefined in the training set. Recent works on open vocabulary object detection (OVD) enable the detection…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Zizhao Li , Zhengkang Xiang , Joseph West , Kourosh Khoshelham

Despite great progress in object detection, most existing methods work only on a limited set of object categories, due to the tremendous human effort needed for bounding-box annotations of training data. To alleviate the problem, recent…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Mingfei Gao , Chen Xing , Juan Carlos Niebles , Junnan Li , Ran Xu , Wenhao Liu , Caiming Xiong

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