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We investigate a strategy for improving the efficiency of contrastive learning of visual representations by leveraging a small amount of supervised information during pre-training. We propose a semi-supervised loss, SuNCEt, based on…

Machine Learning · Computer Science 2020-12-03 Mahmoud Assran , Nicolas Ballas , Lluis Castrejon , Michael Rabbat

The ability to recognize and reason about text embedded in visual inputs is often lacking in vision-and-language (V&L) models, perhaps because V&L pre-training methods have often failed to include such an ability in their training…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Jihyung Kil , Soravit Changpinyo , Xi Chen , Hexiang Hu , Sebastian Goodman , Wei-Lun Chao , Radu Soricut

In recent years, self-supervised contrastive learning has emerged as a distinguished paradigm in the artificial intelligence landscape. It facilitates unsupervised feature learning through contrastive delineations at the instance level.…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Jiansong Zhang , Linlin Shen , Peizhong Liu

Video summarization aims to select the most informative subset of frames in a video to facilitate efficient video browsing. Unsupervised methods usually rely on heuristic training objectives such as diversity and representativeness.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-21 Zongshang Pang , Yuta Nakashima , Mayu Otani , Hajime Nagahara

Image harmonization task aims at harmonizing different composite foreground regions according to specific background image. Previous methods would rather focus on improving the reconstruction ability of the generator by some internal…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Jingtang Liang , Chi-Man Pun

In this work, our objective is to address the problems of generalization and flexibility for text recognition in documents. We introduce a new model that exploits the repetitive nature of characters in languages, and decouples the visual…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Chuhan Zhang , Ankush Gupta , Andrew Zisserman

Linking sheet music images to audio recordings remains a key problem for the development of efficient cross-modal music retrieval systems. One of the fundamental approaches toward this task is to learn a cross-modal embedding space via deep…

Sound · Computer Science 2023-09-22 Luis Carvalho , Tobias Washüttl , Gerhard Widmer

Training dense passage representations via contrastive learning has been shown effective for Open-Domain Passage Retrieval (ODPR). Existing studies focus on further optimizing by improving negative sampling strategy or extra pretraining.…

Computation and Language · Computer Science 2022-03-08 Bohong Wu , Zhuosheng Zhang , Jinyuan Wang , Hai Zhao

During the last half decade, convolutional neural networks (CNNs) have triumphed over semantic segmentation, which is one of the core tasks in many applications such as autonomous driving and augmented reality. However, to train CNNs…

Computer Vision and Pattern Recognition · Computer Science 2019-01-11 Yang Zhang , Philip David , Hassan Foroosh , Boqing Gong

Text images are unique in their dual nature, encompassing both visual and linguistic information. The visual component encompasses structural and appearance-based features, while the linguistic dimension incorporates contextual and semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yifei Zhang , Chang Liu , Jin Wei , Xiaomeng Yang , Yu Zhou , Can Ma , Xiangyang Ji

Contrary to popular belief, Optical Character Recognition (OCR) remains a challenging problem when text occurs in unconstrained environments, like natural scenes, due to geometrical distortions, complex backgrounds, and diverse fonts. In…

Computer Vision and Pattern Recognition · Computer Science 2019-06-06 Marcin Namysl , Iuliu Konya

We present a self-supervised learning method to learn audio and video representations. Prior work uses the natural correspondence between audio and video to define a standard cross-modal instance discrimination task, where a model is…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Pedro Morgado , Ishan Misra , Nuno Vasconcelos

Unstructured urban environments present unique challenges for scene understanding and generalization due to their complex and diverse layouts. We introduce SynthGenNet, a self-supervised student-teacher architecture designed to enable…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Pushpendra Dhakara , Prachi Chachodhia , Vaibhav Kumar

Self-supervised learning techniques have shown their abilities to learn meaningful feature representation. This is made possible by training a model on pretext tasks that only requires to find correlations between inputs or parts of inputs.…

Computer Vision and Pattern Recognition · Computer Science 2020-01-17 Vishal Keshav , Fabien Delattre

In this paper, we propose a genuine group-level contrastive visual representation learning method whose linear evaluation performance on ImageNet surpasses the vanilla supervised learning. Two mainstream unsupervised learning schemes are…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Bo Pang , Yifan Zhang , Yaoyi Li , Jia Cai , Cewu Lu

Following SimCSE, contrastive learning based methods have achieved the state-of-the-art (SOTA) performance in learning sentence embeddings. However, the unsupervised contrastive learning methods still lag far behind the supervised…

Computation and Language · Computer Science 2022-06-07 Wei Wang , Liangzhu Ge , Jingqiao Zhang , Cheng Yang

Detecting and recognizing text in natural scene images is a challenging, yet not completely solved task. In re- cent years several new systems that try to solve at least one of the two sub-tasks (text detection and text recognition) have…

Computer Vision and Pattern Recognition · Computer Science 2017-07-28 Christian Bartz , Haojin Yang , Christoph Meinel

Recent advances in self-supervised learning (SSL) have largely closed the gap with supervised ImageNet pretraining. Despite their success these methods have been primarily applied to unlabeled ImageNet images, and show marginal gains when…

Computer Vision and Pattern Recognition · Computer Science 2020-12-09 Ramprasaath R. Selvaraju , Karan Desai , Justin Johnson , Nikhil Naik

In recent years, the field of intelligent transportation systems (ITS) has achieved remarkable success, which is mainly due to the large amount of available annotation data. However, obtaining these annotated data has to afford expensive…

Machine Learning · Computer Science 2022-11-30 Quan Feng , Jiayu Yao , Zhison Pan , Guojun Zhou

Existing multi-style image captioning methods show promising results in generating a caption with accurate visual content and desired linguistic style. However, existing methods overlook the relationship between linguistic style and visual…

Computer Vision and Pattern Recognition · Computer Science 2023-01-30 Yucheng Zhou , Guodong Long