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We introduce MixTraining, a new training paradigm for object detection that can improve the performance of existing detectors for free. MixTraining enhances data augmentation by utilizing augmentations of different strengths while excluding…

Computer Vision and Pattern Recognition · Computer Science 2021-11-05 Mengde Xu , Zheng Zhang , Fangyun Wei , Yutong Lin , Yue Cao , Stephen Lin , Han Hu , Xiang Bai

The literature has proposed several methods to finetune pretrained GANs on new datasets, which typically results in higher performance compared to training from scratch, especially in the limited-data regime. However, despite the apparent…

Machine Learning · Computer Science 2022-03-11 Timofey Grigoryev , Andrey Voynov , Artem Babenko

Model efficiency has become increasingly important in computer vision. In this paper, we systematically study neural network architecture design choices for object detection and propose several key optimizations to improve efficiency.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Mingxing Tan , Ruoming Pang , Quoc V. Le

Many open-world applications require the detection of novel objects, yet state-of-the-art object detection and instance segmentation networks do not excel at this task. The key issue lies in their assumption that regions without any…

Computer Vision and Pattern Recognition · Computer Science 2022-04-14 Kuniaki Saito , Ping Hu , Trevor Darrell , Kate Saenko

Efficient fine-tuning of pre-trained Text-to-Image (T2I) models involves adjusting the model to suit a particular task or dataset while minimizing computational resources and limiting the number of trainable parameters. However, it often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Komal Kumar , Rao Muhammad Anwer , Fahad Shahbaz Khan , Salman Khan , Ivan Laptev , Hisham Cholakkal

Modern object detection methods can be divided into one-stage approaches and two-stage ones. One-stage detectors are more efficient owing to straightforward architectures, but the two-stage detectors still take the lead in accuracy.…

Computer Vision and Pattern Recognition · Computer Science 2020-09-25 Xin Lu , Quanquan Li , Buyu Li , Junjie Yan

Image-level contrastive representation learning has proven to be highly effective as a generic model for transfer learning. Such generality for transfer learning, however, sacrifices specificity if we are interested in a certain downstream…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Fangyun Wei , Yue Gao , Zhirong Wu , Han Hu , Stephen Lin

The pretraining-finetuning paradigm is a crucial strategy in metallic surface defect detection for mitigating the challenges posed by data scarcity. However, its implementation presents a critical dilemma. Pretraining on natural image…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Chuni Liu , Hongjie Li , Jiaqi Du , Yangyang Hou , Qian Sun , Lei Jin , Ke Xu

Multiple datasets and open challenges for object detection have been introduced in recent years. To build more general and powerful object detection systems, in this paper, we construct a new large-scale benchmark termed BigDetection. Our…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Likun Cai , Zhi Zhang , Yi Zhu , Li Zhang , Mu Li , Xiangyang Xue

Over the years various methods have been proposed for the problem of object detection. Recently, we have witnessed great strides in this domain owing to the emergence of powerful deep neural networks. However, there are typically two main…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Klemen Kotar , Roozbeh Mottaghi

Query-based object detectors directly decode image features into object instances with a set of learnable queries. These query vectors are progressively refined to stable meaningful representations through a sequence of decoder layers, and…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Shuai Wang , Yao Teng , Limin Wang

ImageNet pre-training has been regarded as essential for training accurate object detectors for a long time. Recently, it has been shown that object detectors trained from randomly initialized weights can be on par with those fine-tuned…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Yosuke Shinya , Edgar Simo-Serra , Taiji Suzuki

Dense retrievers utilize pre-trained backbone language models (e.g., BERT, LLaMA) that are fine-tuned via contrastive learning to perform the task of encoding text into sense representations that can be then compared via a shallow…

Information Retrieval · Computer Science 2025-05-13 Zheng Yao , Shuai Wang , Guido Zuccon

Post-training alignment is central to deploying large language models (LLMs), yet practical workflows remain split across backend-specific tools and ad-hoc glue code, making experiments hard to reproduce. We identify backend interference,…

Pretraining on large labeled datasets is a prerequisite to achieve good performance in many computer vision tasks like 2D object recognition, video classification etc. However, pretraining is not widely used for 3D recognition tasks where…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Zaiwei Zhang , Rohit Girdhar , Armand Joulin , Ishan Misra

Unsupervised domain adaptation object detection (UDAOD) research on Detection Transformer(DETR) mainly focuses on feature alignment and existing methods can be divided into two kinds, each of which has its unresolved issues. One-stage…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Weixi Weng , Chun Yuan

This paper shows the effectiveness of 2D backbone scaling and pretraining for pillar-based 3D object detectors. Pillar-based methods mainly employ randomly initialized 2D convolution neural network (ConvNet) for feature extraction and fail…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Weixin Mao , Tiancai Wang , Diankun Zhang , Junjie Yan , Osamu Yoshie

Real-time object detection is crucial for real-world applications as it requires high accuracy with low latency. While Detection Transformers (DETR) have demonstrated significant performance improvements, current real-time DETR models are…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Jiannan Huang , Aditya Kane , Fengzhe Zhou , Yunchao Wei , Humphrey Shi

The recently proposed DEtection TRansformer (DETR) has established a fully end-to-end paradigm for object detection. However, DETR suffers from slow training convergence, which hinders its applicability to various detection tasks. We…

Computer Vision and Pattern Recognition · Computer Science 2023-02-07 Gongjie Zhang , Zhipeng Luo , Jiaxing Huang , Shijian Lu , Eric P. Xing

When an object detector is deployed in a novel setting it often experiences a drop in performance. This paper studies how an embodied agent can automatically fine-tune a pre-existing object detector while exploring and acquiring images in a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Gianluca Scarpellini , Stefano Rosa , Pietro Morerio , Lorenzo Natale , Alessio Del Bue