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Vision Transformers (ViTs) have shown competitive accuracy in image classification tasks compared with CNNs. Yet, they generally require much more data for model pre-training. Most of recent works thus are dedicated to designing more…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Daquan Zhou , Yujun Shi , Bingyi Kang , Weihao Yu , Zihang Jiang , Yuan Li , Xiaojie Jin , Qibin Hou , Jiashi Feng

Masked image modeling (MIM) performs strongly in pre-training large vision Transformers (ViTs). However, small models that are critical for real-world applications cannot or only marginally benefit from this pre-training approach. In this…

Computer Vision and Pattern Recognition · Computer Science 2023-01-04 Sucheng Ren , Fangyun Wei , Zheng Zhang , Han Hu

This paper represents a neat yet effective framework, named SemanticMIM, to integrate the advantages of masked image modeling (MIM) and contrastive learning (CL) for general visual representation. We conduct a thorough comparative analysis…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Yike Yuan , Huanzhang Dou , Fengjun Guo , Xi Li

Masked Image Modeling (MIM) has emerged as a promising method for deriving visual representations from unlabeled image data by predicting missing pixels from masked portions of images. It excels in region-aware learning and provides strong…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Yibing Wei , Abhinav Gupta , Pedro Morgado

Masked image modeling (MIM) pre-training for large-scale vision transformers (ViTs) has enabled promising downstream performance on top of the learned self-supervised ViT features. In this paper, we question if the \textit{extremely simple}…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Jin Gao , Shubo Lin , Shaoru Wang , Yutong Kou , Zeming Li , Liang Li , Congxuan Zhang , Xiaoqin Zhang , Yizheng Wang , Weiming Hu

This paper presents SimMIM, a simple framework for masked image modeling. We simplify recently proposed related approaches without special designs such as block-wise masking and tokenization via discrete VAE or clustering. To study what let…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Zhenda Xie , Zheng Zhang , Yue Cao , Yutong Lin , Jianmin Bao , Zhuliang Yao , Qi Dai , Han Hu

There has been significant progress in Masked Image Modeling (MIM). Existing MIM methods can be broadly categorized into two groups based on the reconstruction target: pixel-based and tokenizer-based approaches. The former offers a simpler…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 Yuan Liu , Songyang Zhang , Jiacheng Chen , Zhaohui Yu , Kai Chen , Dahua Lin

We show that bringing intermediate layers' representations of two augmented versions of an image closer together in self-supervised learning helps to improve the momentum contrastive (MoCo) method. To this end, in addition to the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-29 Aakash Kaku , Sahana Upadhya , Narges Razavian

Masked image modeling, an emerging self-supervised pre-training method, has shown impressive success across numerous downstream vision tasks with Vision transformers. Its underlying idea is simple: a portion of the input image is masked out…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Siyuan Li , Di Wu , Fang Wu , Zelin Zang , Stan. Z. Li

Masked image modeling (MIM) has emerged as a promising approach for pre-training Vision Transformers (ViTs). MIMs predict masked tokens token-wise to recover target signals that are tokenized from images or generated by pre-trained models…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Taekyung Kim , Byeongho Heo , Dongyoon Han

Masked Image Modeling (MIM) has garnered significant attention in self-supervised learning, thanks to its impressive capacity to learn scalable visual representations tailored for downstream tasks. However, images inherently contain…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Wenzhao Xiang , Chang Liu , Hongyang Yu , Xilin Chen

We present an approach to efficiently and effectively adapt a masked image modeling (MIM) pre-trained vanilla Vision Transformer (ViT) for object detection, which is based on our two novel observations: (i) A MIM pre-trained vanilla ViT…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Yuxin Fang , Shusheng Yang , Shijie Wang , Yixiao Ge , Ying Shan , Xinggang Wang

Deeper Vision Transformers (ViTs) are more challenging to train. We expose a degradation problem in deeper layers of ViT when using masked image modeling (MIM) for pre-training. To ease the training of deeper ViTs, we introduce a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Guoxi Huang , Hongtao Fu , Adrian G. Bors

Masked image modeling (MIM) with transformer backbones has recently been exploited as a powerful self-supervised pre-training technique. The existing MIM methods adopt the strategy to mask random patches of the image and reconstruct the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Zhaohu Xing , Lei Zhu , Lequan Yu , Zhiheng Xing , Liang Wan

Contrastive image-text models such as CLIP form the building blocks of many state-of-the-art systems. While they excel at recognizing common generic concepts, they still struggle on fine-grained entities which are rare, or even absent from…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

We present a comparative study on how and why contrastive learning (CL) and masked image modeling (MIM) differ in their representations and in their performance of downstream tasks. In particular, we demonstrate that self-supervised Vision…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Namuk Park , Wonjae Kim , Byeongho Heo , Taekyung Kim , Sangdoo Yun

SimMIM is a widely used method for pretraining vision transformers using masked image modeling. However, despite its success in fine-tuning performance, it has been shown to perform sub-optimally when used for linear probing. We propose an…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Madhava Krishna , A V Subramanyam

Contrastive Language-Image Pretraining (CLIP) models excel at understanding image-text relationships but struggle with adapting to new data without forgetting prior knowledge. To address this, models are typically fine-tuned using both new…

Machine Learning · Computer Science 2026-05-06 Ryan King , Gang Li , Bobak Mortazavi , Tianbao Yang

Dense pixel-specific representation learning at scale has been bottlenecked due to the unavailability of large-scale multi-view datasets. Current methods for building effective pretraining datasets heavily rely on annotated 3D meshes, point…

Computer Vision and Pattern Recognition · Computer Science 2024-05-17 Kalyani Marathe , Mahtab Bigverdi , Nishat Khan , Tuhin Kundu , Patrick Howe , Sharan Ranjit S , Anand Bhattad , Aniruddha Kembhavi , Linda G. Shapiro , Ranjay Krishna

Humans exhibit a remarkable ability to learn quickly from a limited number of labeled samples, a capability that starkly contrasts with that of current machine learning systems. Unsupervised Few-Shot Learning (U-FSL) seeks to bridge this…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Zhenyu Zhang , Guangyao Chen , Yixiong Zou , Zhimeng Huang , Yuhua Li , Ruixuan Li