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Contrastive Language-Image Pretraining (CLIP) achieves strong generalization in vision-language tasks by aligning images and texts in a shared embedding space. However, recent findings show that CLIP-like models still underutilize…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Weiheng Zhao , Zilong Huang , Jiashi Feng , Xinggang Wang

Large vision-language models (VLMs), such as CLIP, learn rich joint image-text representations, facilitating advances in numerous downstream tasks, including zero-shot classification and text-to-image generation. Nevertheless, existing VLMs…

Computer Vision and Pattern Recognition · Computer Science 2023-02-24 Roni Paiss , Ariel Ephrat , Omer Tov , Shiran Zada , Inbar Mosseri , Michal Irani , Tali Dekel

Multimodal models are becoming increasingly effective, in part due to unified components, such as the Transformer architecture. However, multimodal models still often consist of many task- and modality-specific pieces and training…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Michael Tschannen , Basil Mustafa , Neil Houlsby

We propose Context-Adaptive Multi-Prompt Embedding, a novel approach to enrich semantic representations in vision-language contrastive learning. Unlike standard CLIP-style models that rely on a single text embedding, our method introduces…

Machine Learning · Computer Science 2025-08-07 Dahun Kim , Anelia Angelova

Contrastive cross-modal models such as CLIP and CLAP aid various vision-language (VL) and audio-language (AL) tasks. However, there has been limited investigation of and improvement in their language encoder, which is the central component…

Computation and Language · Computer Science 2023-10-23 Mengjie Zhao , Junya Ono , Zhi Zhong , Chieh-Hsin Lai , Yuhta Takida , Naoki Murata , Wei-Hsiang Liao , Takashi Shibuya , Hiromi Wakaki , Yuki Mitsufuji

Despite recent advances, vision-language models trained with standard contrastive objectives still struggle with compositional reasoning -- the ability to understand structured relationships between visual and linguistic elements. This…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Jihoon Kwon , Kyle Min , Jy-yong Sohn

Vision-language pretraining on large datasets of images-text pairs is one of the main building blocks of current Vision-Language Models. While with additional training, these models excel in various downstream tasks, including visual…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Madhukar Reddy Vongala , Saurabh Srivastava , Jana Košecká

The original CLIP text encoder is limited by a maximum input length of 77 tokens, which hampers its ability to effectively process long texts and perform fine-grained semantic understanding. In addition, the CLIP text encoder lacks support…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Xiaoxing Hu , Kaicheng Yang , Ziyang Gong , Qi Ming , Zonghao Guo , Yu Tian , Xiang An , Ziyong Feng , Xue Yang

Given a query composed of a reference image and a relative caption, the Composed Image Retrieval goal is to retrieve images visually similar to the reference one that integrates the modifications expressed by the caption. Given that recent…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Alberto Baldrati , Marco Bertini , Tiberio Uricchio , Alberto del Bimbo

Existing Visual Language Models (VLMs) suffer structural limitations where a few low contribution tokens may excessively capture global semantics, dominating the information aggregation process and suppressing the discriminative features in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Bin Kang , Bin Chen , Junjie Wang , Yulin Li , Junzhi Zhao , Zhuotao Tian

Dense visual prediction tasks have been constrained by their reliance on predefined categories, limiting their applicability in real-world scenarios where visual concepts are unbounded. While Vision-Language Models (VLMs) like CLIP have…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Junjie Wang , Bin Chen , Yulin Li , Bin Kang , Yichi Chen , Zhuotao Tian

Large-scale web-crawled datasets are fundamental for the success of pre-training vision-language models, such as CLIP. However, the inherent noise and potential irrelevance of web-crawled AltTexts pose challenges in achieving precise…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Zhengfeng Lai , Haotian Zhang , Bowen Zhang , Wentao Wu , Haoping Bai , Aleksei Timofeev , Xianzhi Du , Zhe Gan , Jiulong Shan , Chen-Nee Chuah , Yinfei Yang , Meng Cao

As a pioneering vision-language model, CLIP (Contrastive Language-Image Pre-training) has achieved significant success across various domains and a wide range of downstream vision-language tasks. However, the text encoders in popular CLIP…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Mothilal Asokan , Kebin Wu , Fatima Albreiki

Vision-language models (VLMs) such as CLIP are trained via contrastive learning between text and image pairs, resulting in aligned image and text embeddings that are useful for many downstream tasks. A notable drawback of CLIP, however, is…

Machine Learning · Computer Science 2025-07-08 Dylan Sam , Devin Willmott , Joao D. Semedo , J. Zico Kolter

We introduce Visual Caption Restoration (VCR), a novel vision-language task that challenges models to accurately restore partially obscured texts using pixel-level hints within images. This task stems from the observation that text embedded…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Tianyu Zhang , Suyuchen Wang , Lu Li , Ge Zhang , Perouz Taslakian , Sai Rajeswar , Jie Fu , Bang Liu , Yoshua Bengio

Compositional reasoning is a hallmark of human visual intelligence. Yet, despite the size of large vision-language models, they struggle to represent simple compositions by combining objects with their attributes. To measure this lack of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Arijit Ray , Filip Radenovic , Abhimanyu Dubey , Bryan A. Plummer , Ranjay Krishna , Kate Saenko

Pretrained vision-language models (VLMs) such as CLIP excel in general multimodal comprehension but often struggle to capture nuanced, context-dependent visual cues. This makes it difficult to distinguish between similar-looking concepts…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Yuchen Huang , Zhiyuan Fan , Zhitao He , Sandeep Polisetty , Wenyan Li , Yi R. Fung

Recent vision-language models excel at large-scale image-text alignment but often neglect the compositional structure of language, leading to failures on tasks that hinge on word order and predicate-argument structure. We introduce…

Computation and Language · Computer Science 2025-09-26 Kin Ian Lo , Hala Hawashin , Mina Abbaszadeh , Tilen Limback-Stokin , Hadi Wazni , Mehrnoosh Sadrzadeh

Vision-language models like CLIP have demonstrated remarkable zero-shot capabilities in classification and retrieval. However, these models often struggle with compositional reasoning - the ability to understand the relationships between…

Machine Learning · Computer Science 2025-10-29 Amit Peleg , Naman Deep Singh , Matthias Hein

Dual-encoder Vision-Language Models (VLMs) such as CLIP are often characterized as bag-of-words systems due to their poor performance on compositional benchmarks. We argue that this limitation may stem less from deficient representations…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Imanol Miranda , Ander Salaberria , Eneko Agirre , Gorka Azkune