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As object detectors are increasingly deployed as black-box cloud services or pre-trained models with restricted access to the original training data, the challenge of zero-shot object-level out-of-distribution (OOD) detection arises. This…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Bin Zhang , Xiaoyang Qu , Guokuan Li , Jiguang Wan , Jianzong Wang

Classical object detectors are incapable of detecting novel class objects that are not encountered before. Regarding this issue, Open-Vocabulary Object Detection (OVOD) is proposed, which aims to detect the objects in the candidate class…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Zhao Wang , Aoxue Li , Fengwei Zhou , Zhenguo Li , Qi Dou

Traditional closed-set 3D detection frameworks fail to meet the demands of open-world applications like autonomous driving. Existing open-vocabulary 3D detection methods typically adopt a two-stage pipeline consisting of pseudo-label…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Qi Liu , Yabei Li , Hongsong Wang , Lei He

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 (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

To ease the difficulty of acquiring annotation labels in 3D data, a common method is using unsupervised and open-vocabulary semantic segmentation, which leverage 2D CLIP semantic knowledge. In this paper, unlike previous research that…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Fuyang Yu , Runze Tian , Zhen Wang , Xiaochuan Wang , Xiaohui Liang

In this paper, we attempt to specialize the VLM model for OWOD tasks by distilling its open-world knowledge into a language-agnostic detector. Surprisingly, we observe that the combination of a simple \textbf{knowledge distillation}…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Shuailei Ma , Yuefeng Wang , Ying Wei , Jiaqi Fan , Enming Zhang , Xinyu Sun , Peihao Chen

Recently, a few open-vocabulary methods have been proposed by employing a unified architecture to tackle generic segmentation and detection tasks. However, their performance still lags behind the task-specific models due to the conflict…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 Shuai Li , Minghan Li , Pengfei Wang , Lei Zhang

Knowledge distillation (KD) has witnessed its powerful capability in learning compact models in object detection. Previous KD methods for object detection mostly focus on imitating deep features within the imitation regions instead of…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Zhaohui Zheng , Rongguang Ye , Ping Wang , Dongwei Ren , Wangmeng Zuo , Qibin Hou , Ming-Ming Cheng

Out-of-distribution detection (OOD) is a pivotal task for real-world applications that trains models to identify samples that are distributionally different from the in-distribution (ID) data during testing. Recent advances in AI,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Chaohua Li , Enhao Zhang , Chuanxing Geng , Songcan Chen

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

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

Open-Vocabulary Detection (OVD) is the task of detecting all interesting objects in a given scene without predefined object classes. Extensive work has been done to deal with the OVD for 2D RGB images, but the exploration of 3D OVD is still…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Xingyu Peng , Yan Bai , Chen Gao , Lirong Yang , Fei Xia , Beipeng Mu , Xiaofei Wang , Si Liu

Object detection (OD) in computer vision has made significant progress in recent years, transitioning from closed-set labels to open-vocabulary detection (OVD) based on large-scale vision-language pre-training (VLP). However, current…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Yiyang Yao , Peng Liu , Tiancheng Zhao , Qianqian Zhang , Jiajia Liao , Chunxin Fang , Kyusong Lee , Qing Wang

As a general model compression paradigm, feature-based knowledge distillation allows the student model to learn expressive features from the teacher counterpart. In this paper, we mainly focus on designing an effective feature-distillation…

Computer Vision and Pattern Recognition · Computer Science 2023-02-13 Guang Yang , Yin Tang , Jun Li , Jianhua Xu , Xili Wan

In this paper, we investigate the knowledge distillation (KD) strategy for object detection and propose an effective framework applicable to both homogeneous and heterogeneous student-teacher pairs. The conventional feature imitation…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Lewei Yao , Renjie Pi , Hang Xu , Wei Zhang , Zhenguo Li , Tong Zhang

The nature of diversity in real-world environments necessitates neural network models to expand from closed category settings to accommodate novel emerging categories. In this paper, we study the open-vocabulary object detection (OVD),…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Sunyuan Qiang , Xianfei Li , Yanyan Liang , Wenlong Liao , Tao He , Pai Peng

In this paper, we explore the potential of the Contrastive Language-Image Pretraining (CLIP) model in scene text recognition (STR), and establish a novel Symmetrical Linguistic Feature Distillation framework (named CLIP-OCR) to leverage…

Computer Vision and Pattern Recognition · Computer Science 2023-10-11 Zixiao Wang , Hongtao Xie , Yuxin Wang , Jianjun Xu , Boqiang Zhang , Yongdong Zhang

Open-Set Object Detection (OSOD) has emerged as a contemporary research direction to address the detection of unknown objects. Recently, few works have achieved remarkable performance in the OSOD task by employing contrastive clustering to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Hiran Sarkar , Vishal Chudasama , Naoyuki Onoe , Pankaj Wasnik , Vineeth N Balasubramanian

Open-Vocabulary Semantic Segmentation (OVSS) has advanced with recent vision-language models (VLMs), enabling segmentation beyond predefined categories through various learning schemes. Notably, training-free methods offer scalable, easily…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Chanyoung Kim , Dayun Ju , Woojung Han , Ming-Hsuan Yang , Seong Jae Hwang