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Feature selection is a combinatorial optimization problem that is NP-hard. Conventional approaches often employ heuristic or greedy strategies, which are prone to premature convergence and may fail to capture subtle yet informative…

Machine Learning · Computer Science 2025-10-22 Yusi Fan , Tian Wang , Zhiying Yan , Chang Liu , Qiong Zhou , Qi Lu , Zhehao Guo , Ziqi Deng , Wenyu Zhu , Ruochi Zhang , Fengfeng Zhou

This paper presents LP-DETR (Layer-wise Progressive DETR), a novel approach that enhances DETR-based object detection through multi-scale relation modeling. Our method introduces learnable spatial relationships between object queries…

Computer Vision and Pattern Recognition · Computer Science 2025-05-14 Zhengjian Kang , Ye Zhang , Xiaoyu Deng , Xintao Li , Yongzhe Zhang

Object detection is a fundamental problem in computer vision, aiming at locating and classifying objects in image. Although current devices can easily take very high-resolution images, current approaches of object detection seldom consider…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Jinyan Liu , Jie Chen

False negatives (FN) in 3D object detection, {\em e.g.}, missing predictions of pedestrians, vehicles, or other obstacles, can lead to potentially dangerous situations in autonomous driving. While being fatal, this issue is understudied in…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Yilun Chen , Zhiding Yu , Yukang Chen , Shiyi Lan , Animashree Anandkumar , Jiaya Jia , Jose Alvarez

Feature selection aims to preprocess the target dataset, find an optimal and most streamlined feature subset, and enhance the downstream machine learning task. Among filter, wrapper, and embedded-based approaches, the reinforcement learning…

Artificial Intelligence · Computer Science 2025-09-17 Weiliang Zhang , Xiaohan Huang , Yi Du , Ziyue Qiao , Qingqing Long , Zhen Meng , Yuanchun Zhou , Meng Xiao

Recently, a significant improvement in the accuracy of 3D human pose estimation has been achieved by combining convolutional neural networks (CNNs) with pyramid grid alignment feedback loops. Additionally, innovative breakthroughs have been…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Zongyou Yang , Jonathan Loo , Yinghan Hou

Glass is very common in the real world. Influenced by the uncertainty about the glass region and the varying complex scenes behind the glass, the existence of glass poses severe challenges to many computer vision tasks, making glass…

Computer Vision and Pattern Recognition · Computer Science 2022-09-14 Letian Yu , Haiyang Mei , Wen Dong , Ziqi Wei , Li Zhu , Yuxin Wang , Xin Yang

Nowadays it is prevalent to take features extracted from pre-trained deep learning models as image representations which have achieved promising classification performance. Existing methods usually consider either object-based features or…

Computer Vision and Pattern Recognition · Computer Science 2020-10-13 Chiranjibi Sitaula , Yong Xiang , Anish Basnet , Sunil Aryal , Xuequan Lu

There are still two problems in SDD causing some inaccurate results: (1) In the process of feature extraction, with the layer-by-layer acquisition of semantic information, local information is gradually lost, resulting into less…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Aisha Chandio , Gong Gui , Teerath Kumar , Irfan Ullah , Ramin Ranjbarzadeh , Arunabha M Roy , Akhtar Hussain , Yao Shen

Local feature matching is a computationally intensive task at the subpixel level. While detector-based methods coupled with feature descriptors struggle in low-texture scenes, CNN-based methods with a sequential extract-to-match pipeline,…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Qing Wang , Jiaming Zhang , Kailun Yang , Kunyu Peng , Rainer Stiefelhagen

Object pose refinement is essential for robust object pose estimation. Previous work has made significant progress towards instance-level object pose refinement. Yet, category-level pose refinement is a more challenging problem due to large…

Computer Vision and Pattern Recognition · Computer Science 2024-04-18 Linfang Zheng , Tze Ho Elden Tse , Chen Wang , Yinghan Sun , Hua Chen , Ales Leonardis , Wei Zhang

FPN is a common component used in object detectors, it supplements multi-scale information by adjacent level features interpolation and summation. However, due to the existence of nonlinear operations and the convolutional layers with…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Jialiang Ma , Bin Chen

We motivate and present feature selective anchor-free (FSAF) module, a simple and effective building block for single-shot object detectors. It can be plugged into single-shot detectors with feature pyramid structure. The FSAF module…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Chenchen Zhu , Yihui He , Marios Savvides

Deep hashing approaches, including deep quantization and deep binary hashing, have become a common solution to large-scale image retrieval due to their high computation and storage efficiency. Most existing hashing methods cannot produce…

Computer Vision and Pattern Recognition · Computer Science 2024-01-10 Ziyun Zeng , Jinpeng Wang , Bin Chen , Tao Dai , Shu-Tao Xia , Zhi Wang

We present an efficient foveal framework to perform object detection. A scale normalized image pyramid (SNIP) is generated that, like human vision, only attends to objects within a fixed size range at different scales. Such a restriction of…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Bharat Singh , Mahyar Najibi , Abhishek Sharma , Larry S. Davis

Focal Loss has reached incredible popularity as it uses a simple technique to identify and utilize hard examples to achieve better performance on classification. However, this method does not easily generalize outside of classification…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Chen Liu , Xiaomeng Dong , Michael Potter , Hsi-Ming Chang , Ravi Soni

Multi-frame methods improve monocular depth estimation over single-frame approaches by aggregating spatial-temporal information via feature matching. However, the spatial-temporal feature leads to accuracy degradation in dynamic scenes. To…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Jiquan Zhong , Xiaolin Huang , Xiao Yu

RetinaNet proposed Focal Loss for classification task and improved one-stage detectors greatly. However, there is still a gap between it and two-stage detectors. We analyze the prediction of RetinaNet and find that the misalignment of…

Computer Vision and Pattern Recognition · Computer Science 2020-11-23 Wu Kehe , Chen Zuge , Zhang Xiaoliang , Li Wei

Current state-of-the-art convolutional architectures for object detection are manually designed. Here we aim to learn a better architecture of feature pyramid network for object detection. We adopt Neural Architecture Search and discover a…

Computer Vision and Pattern Recognition · Computer Science 2019-04-17 Golnaz Ghiasi , Tsung-Yi Lin , Ruoming Pang , Quoc V. Le

Gradient-based hyperparameter optimization has earned a widespread popularity in the context of few-shot meta-learning, but remains broadly impractical for tasks with long horizons (many gradient steps), due to memory scaling and gradient…

Machine Learning · Computer Science 2021-10-01 Paul Micaelli , Amos Storkey
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