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Recent researches attempt to improve the detection performance by adopting the idea of cascade for single-stage detectors. In this paper, we analyze and discover that inconsistency is the major factor limiting the performance. The refined…

Computer Vision and Pattern Recognition · Computer Science 2019-07-17 Hongkai Zhang , Hong Chang , Bingpeng Ma , Shiguang Shan , Xilin Chen

We present consistent optimization for single stage object detection. Previous works of single stage object detectors usually rely on the regular, dense sampled anchors to generate hypothesis for the optimization of the model. Through an…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Tao Kong , Fuchun Sun , Huaping Liu , Yuning Jiang , Jianbo Shi

The highest accuracy object detectors to date are based on a two-stage approach popularized by R-CNN, where a classifier is applied to a sparse set of candidate object locations. In contrast, one-stage detectors that are applied over a…

Computer Vision and Pattern Recognition · Computer Science 2018-02-08 Tsung-Yi Lin , Priya Goyal , Ross Girshick , Kaiming He , Piotr Dollár

Recent advances in camera equipped drone applications and their widespread use increased the demand on vision based object detection algorithms for aerial images. Object detection process is inherently a challenging task as a generic…

Computer Vision and Pattern Recognition · Computer Science 2020-12-25 Berat Mert Albaba , Sedat Ozer

Recently, two-stage Deformable DETR introduced the query-based two-stage head, a new type of two-stage head different from the region-based two-stage heads of classical detectors as Faster R-CNN. In query-based two-stage heads, the second…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Cédric Picron , Punarjay Chakravarty , Tinne Tuytelaars

In this paper, we first investigate why typical two-stage methods are not as fast as single-stage, fast detectors like YOLO and SSD. We find that Faster R-CNN and R-FCN perform an intensive computation after or before RoI warping. Faster…

Computer Vision and Pattern Recognition · Computer Science 2017-11-27 Zeming Li , Chao Peng , Gang Yu , Xiangyu Zhang , Yangdong Deng , Jian Sun

The advancement of deep learning in object detection has predominantly focused on megapixel images, leaving a critical gap in the efficient processing of gigapixel images. These super high-resolution images present unique challenges due to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-29 Wenxi Li , Ruxin Zhang , Haozhe Lin , Yuchen Guo , Chao Ma , Xiaokang Yang

Current state-of-the-art object objectors are fine-tuned from the off-the-shelf networks pretrained on large-scale classification dataset ImageNet, which incurs some additional problems: 1) The classification and detection have different…

Computer Vision and Pattern Recognition · Computer Science 2019-05-07 Rui Zhu , Shifeng Zhang , Xiaobo Wang , Longyin Wen , Hailin Shi , Liefeng Bo , Tao Mei

One-stage object detectors are trained by optimizing classification-loss and localization-loss simultaneously, with the former suffering much from extreme foreground-background class imbalance issue due to the large number of anchors. This…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Kean Chen , Jianguo Li , Weiyao Lin , John See , Ji Wang , Lingyu Duan , Zhibo Chen , Changwei He , Junni Zou

The complex nature of combining localization and classification in object detection has resulted in the flourished development of methods. Previous works tried to improve the performance in various object detection heads but failed to…

Computer Vision and Pattern Recognition · Computer Science 2021-06-16 Xiyang Dai , Yinpeng Chen , Bin Xiao , Dongdong Chen , Mengchen Liu , Lu Yuan , Lei Zhang

Modern two-stage object detectors generally require excessively large models for their detection heads to achieve high accuracy. To address this problem, we propose that the model parameters of two-stage detection heads can be condensed and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Zhe Chen , Jing Zhang , Dacheng Tao

Small object detection requires the detection head to scan a large number of positions on image feature maps, which is extremely hard for computation- and energy-efficient lightweight generic detectors. To accurately detect small objects…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Shaoyu Chen , Tianheng Cheng , Jiemin Fang , Qian Zhang , Yuan Li , Wenyu Liu , Xinggang Wang

One-stage object detection is commonly implemented by optimizing two sub-tasks: object classification and localization, using heads with two parallel branches, which might lead to a certain level of spatial misalignment in predictions…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Chengjian Feng , Yujie Zhong , Yu Gao , Matthew R. Scott , Weilin Huang

Single-stage detectors suffer from extreme foreground-background class imbalance, while two-stage detectors do not. Therefore, in semi-supervised object detection, two-stage detectors can deliver remarkable performance by only selecting…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Yueming Zhang , Xingxu Yao , Chao Liu , Feng Chen , Xiaolin Song , Tengfei Xing , Runbo Hu , Hua Chai , Pengfei Xu , Guoshan Zhang

Existing pose estimation approaches fall into two categories: single-stage and multi-stage methods. While multi-stage methods are seemingly more suited for the task, their performance in current practice is not as good as single-stage…

Computer Vision and Pattern Recognition · Computer Science 2019-05-31 Wenbo Li , Zhicheng Wang , Binyi Yin , Qixiang Peng , Yuming Du , Tianzi Xiao , Gang Yu , Hongtao Lu , Yichen Wei , Jian Sun

In this paper, we propose a binarized neural network learning method called BiDet for efficient object detection. Conventional network binarization methods directly quantize the weights and activations in one-stage or two-stage detectors…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Ziwei Wang , Ziyi Wu , Jiwen Lu , Jie Zhou

Recent CNN based object detectors, no matter one-stage methods like YOLO, SSD, and RetinaNe or two-stage detectors like Faster R-CNN, R-FCN and FPN are usually trying to directly finetune from ImageNet pre-trained models designed for image…

Computer Vision and Pattern Recognition · Computer Science 2018-04-20 Zeming Li , Chao Peng , Gang Yu , Xiangyu Zhang , Yangdong Deng , Jian Sun

Deep learning has been widely recognized as a promising approach in different computer vision applications. Specifically, one-stage object detector and two-stage object detector are regarded as the most important two groups of Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2018-03-06 Xiaoliang Wang , Peng Cheng , Xinchuan Liu , Benedict Uzochukwu

Modern object detectors are static, fixed-depth networks optimized for a single operating point, requiring separate models for different deployment scenarios. We present an any-depth detection framework that enables a single network to span…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Woochul Kang , Hyungseop Lee , Jiho Lee

Although accurate, two-stage face detectors usually require more inference time than single-stage detectors do. This paper proposes a simple yet effective single-stage model for real-time face detection with a prominently high accuracy. We…

Computer Vision and Pattern Recognition · Computer Science 2019-02-06 Nguyen Van Quang , Hiromasa Fujihara