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Recent research has demonstrated that Large Language Models (LLMs) are not limited to text-only tasks but can also function as multimodal models across various modalities, including audio, images, and videos. In particular, research on 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Keonwoo Kim , Yeongjae Cho , Taebaek Hwang , Minsoo Jo , Sangdo Han

Finetuning image-text models such as CLIP achieves state-of-the-art accuracies on a variety of benchmarks. However, recent works like WiseFT (Wortsman et al., 2021) and LP-FT (Kumar et al., 2022) have shown that even subtle differences in…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Sachin Goyal , Ananya Kumar , Sankalp Garg , Zico Kolter , Aditi Raghunathan

This paper proposes an approach to Dense Video Captioning (DVC) without pairwise event-sentence annotation. First, we adopt the knowledge distilled from relevant and well solved tasks to generate high-quality event proposals. Then we…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Bofeng Wu , Guocheng Niu , Jun Yu , Xinyan Xiao , Jian Zhang , Hua Wu

The Image Difference Captioning (IDC) task aims to describe the visual differences between two similar images with natural language. The major challenges of this task lie in two aspects: 1) fine-grained visual differences that require…

Multimedia · Computer Science 2022-02-10 Linli Yao , Weiying Wang , Qin Jin

Recently, many studies have been conducted to enhance the zero-shot generalization ability of vision-language models (e.g., CLIP) by addressing the semantic misalignment between image and text embeddings in downstream tasks. Although many…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Xiaojie Yin , Qilong Wang , Bing Cao , Qinghua Hu

Automatically evaluating the quality of image captions can be very challenging since human language is quite flexible that there can be various expressions for the same meaning. Most of the current captioning metrics rely on token level…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Chao Zeng , Tiesong Zhao , Sam Kwong

The dominant paradigm for learning video-text representations -- noise contrastive learning -- increases the similarity of the representations of pairs of samples that are known to be related, such as text and video from the same sample,…

Computer Vision and Pattern Recognition · Computer Science 2021-01-15 Mandela Patrick , Po-Yao Huang , Yuki Asano , Florian Metze , Alexander Hauptmann , João Henriques , Andrea Vedaldi

Vision-language models, such as CLIP, have achieved significant success in aligning visual and textual representations, becoming essential components of many multi-modal large language models (MLLMs) like LLaVA and OpenFlamingo. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Shizhan Gong , Yankai Jiang , Qi Dou , Farzan Farnia

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

Recent advances in 3D reconstruction techniques and vision-language models have fueled significant progress in 3D semantic understanding, a capability critical to robotics, autonomous driving, and virtual/augmented reality. However, methods…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Lei Tian , Xiaomin Li , Liqian Ma , Hao Yin , Zirui Zheng , Hefei Huang , Taiqing Li , Huchuan Lu , Xu Jia

In this paper, a novel contrastive language-image pre-training (CLIP) model based semantic communication framework is designed. Compared to standard neural network (e.g.,convolutional neural network) based semantic encoders and decoders…

Machine Learning · Computer Science 2025-07-15 Shaoran Yang , Dongyu Wei , Hanzhi Yu , Zhaohui Yang , Yuchen Liu , Mingzhe Chen

For video captioning, "pre-training and fine-tuning" has become a de facto paradigm, where ImageNet Pre-training (INP) is usually used to encode the video content, then a task-oriented network is fine-tuned from scratch to cope with caption…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Bang Yang , Tong Zhang , Yuexian Zou

Large-scale pre-trained models have demonstrated impressive performance in vision and language tasks within open-world scenarios. Due to the lack of comparable pre-trained models for 3D shapes, recent methods utilize language-image…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Dan Song , Xinwei Fu , Ning Liu , Weizhi Nie , Wenhui Li , Lanjun Wang , You Yang , Anan Liu

In typical multimodal contrastive learning, such as CLIP, encoders produce one point in the latent representation space for each input. However, one-point representation has difficulty in capturing the relationship and the similarity…

Machine Learning · Computer Science 2025-03-04 Toshimitsu Uesaka , Taiji Suzuki , Yuhta Takida , Chieh-Hsin Lai , Naoki Murata , Yuki Mitsufuji

Recently, contrastive learning has been shown to be effective in improving pre-trained language models (PLM) to derive high-quality sentence representations. It aims to pull close positive examples to enhance the alignment while push apart…

Computation and Language · Computer Science 2022-05-03 Kun Zhou , Beichen Zhang , Wayne Xin Zhao , Ji-Rong Wen

Deep Learning (DL) is undergoing a paradigm shift with the emergence of foundation models. In this work, we focus on Contrastive Language-Image Pre-training (CLIP), a Vision-Language foundation model that achieves high accuracy across…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Angelos Zavras , Dimitrios Michail , Begüm Demir , Ioannis Papoutsis

This paper proposes a single-stage training approach that semantically aligns three modalities - audio, visual, and text using a contrastive learning framework. Contrastive training has gained prominence for multimodal alignment, utilizing…

Sound · Computer Science 2025-05-21 Parthasaarathy Sudarsanam , Irene Martín-Morató , Tuomas Virtanen

Contrastive vision-language (V&L) models remain a popular choice for various applications. However, several limitations have emerged, most notably the limited ability of V&L models to learn compositional representations. Prior methods often…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Hai X. Pham , David T. Hoffmann , Ricardo Guerrero , Brais Martinez

Existing vision-text contrastive learning models enhance representation transferability and support zero-shot prediction by matching paired image and caption embeddings while pushing unrelated pairs apart. However, astronomical image-label…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Raza Imam , Mohammed Talha Alam , Umaima Rahman , Mohsen Guizani , Fakhri Karray

Leveraging pre-trained 2D image representations in behavior cloning policies has achieved great success and has become a standard approach for robotic manipulation. However, such representations fail to capture the 3D spatial information…

Robotics · Computer Science 2026-05-07 I-Chun Arthur Liu , Krzysztof Choromanski , Sandy Huang , Connor Schenck