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As multimedia services such as video streaming, video conferencing, virtual reality (VR), and online gaming continue to expand, ensuring high perceptual visual quality becomes a priority to maintain user satisfaction and competitiveness.…

Multimedia · Computer Science 2025-03-04 Wei Zhou , Hadi Amirpour , Christian Timmerer , Guangtao Zhai , Patrick Le Callet , Alan C. Bovik

Automatically learned quality assessment for images has recently become a hot topic due to its usefulness in a wide variety of applications such as evaluating image capture pipelines, storage techniques and sharing media. Despite the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-04 Hossein Talebi , Peyman Milanfar

We propose a new prototype model for no-reference video quality assessment (VQA) based on the natural statistics of space-time chips of videos. Space-time chips (ST-chips) are a new, quality-aware feature space which we define as space-time…

Image and Video Processing · Electrical Eng. & Systems 2020-08-25 Joshua P. Ebenezer , Zaixi Shang , Yongjun Wu , Hai Wei , Alan C. Bovik

Contrastive Language-Image Pre-training (CLIP) provides a foundation model by integrating natural language into visual concepts, enabling zero-shot recognition on downstream tasks. It is usually expected that satisfactory overall accuracy…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Jie-Jing Shao , Jiang-Xin Shi , Xiao-Wen Yang , Lan-Zhe Guo , Yu-Feng Li

Image complexity assessment (ICA) is a challenging task in perceptual evaluation due to the subjective nature of human perception and the inherent semantic diversity in real-world images. Existing ICA methods predominantly rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Yuqing Luo , Yixiao Li , Jiang Liu , Jun Fu , Hadi Amirpour , Guanghui Yue , Baoquan Zhao , Padraig Corcoran , Hantao Liu , Wei Zhou

Significant progress has been achieved on the improvement and downstream usages of the Contrastive Language-Image Pre-training (CLIP) vision-language model, while less attention is paid to the interpretation of CLIP. We propose a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Chenyang Zhao , Kun Wang , Janet H. Hsiao , Antoni B. Chan

Large-scale contrastive vision-language pre-training has shown significant progress in visual representation learning. Unlike traditional visual systems trained by a fixed set of discrete labels, a new paradigm was introduced in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Peng Gao , Shijie Geng , Renrui Zhang , Teli Ma , Rongyao Fang , Yongfeng Zhang , Hongsheng Li , Yu Qiao

The evaluation of image captions, looking at both linguistic fluency and semantic correspondence to visual contents, has witnessed a significant effort. Still, despite advancements such as the CLIPScore metric, multilingual captioning…

Computation and Language · Computer Science 2025-02-18 Gonçalo Gomes , Chrysoula Zerva , Bruno Martins

CLIP (Contrastive Language-Image Pre-training) has attained great success in pattern recognition and computer vision. Transferring CLIP to downstream tasks (e.g. zero- or few-shot classification) is a hot topic in multimodal learning.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Zhipeng Ye , Feng Jiang , Qiufeng Wang , Kaizhu Huang , Jiaqi Huang

Contrastive Language-Image Pre-training (CLIP) represents the latest incarnation of pre-trained vision-language models. Although CLIP has recently shown its superior power on a wide range of downstream vision-language tasks like Visual…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Sinuo Deng , Lifang Wu , Ge Shi , Lehao Xing , Meng Jian , Ye Xiang

The proliferation of videos collected during in-the-wild natural settings has pushed the development of effective Video Quality Assessment (VQA) methodologies. Contemporary supervised opinion-driven VQA strategies predominantly hinge on…

Computer Vision and Pattern Recognition · Computer Science 2023-05-01 Haoning Wu , Liang Liao , Annan Wang , Chaofeng Chen , Jingwen Hou , Wenxiu Sun , Qiong Yan , Weisi Lin

No-reference point cloud quality assessment (NR-PCQA) aims to automatically predict the perceptual quality of point clouds without reference, which has achieved remarkable performance due to the utilization of deep learning-based models.…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Ziyu Shan , Yujie Zhang , Qi Yang , Haichen Yang , Yiling Xu , Shan Liu

With the rising demand for high-resolution (HR) images, No-Reference Image Quality Assessment (NR-IQA) gains more attention, as it can ecaluate image quality in real-time on mobile devices and enhance user experience. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Zewen Chen , Sunhan Xu , Yun Zeng , Haochen Guo , Jian Guo , Shuai Liu , Juan Wang , Bing Li , Weiming Hu , Dehua Liu , Hesong Li

There is a growing consensus in the research community that the optimization of low-light image enhancement approaches should be guided by the visual quality perceived by end users. Despite the substantial efforts invested in the design of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Baoliang Chen , Lingyu Zhu , Hanwei Zhu , Wenhan Yang , Linqi Song , Shiqi Wang

The rapid advancement of artificial intelligence and widespread use of smartphones have resulted in an exponential growth of image data, both real (camera-captured) and virtual (AI-generated). This surge underscores the critical need for…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Zhiqiang Lao , Heather Yu

Prompt learning is a powerful technique for transferring Vision-Language Models (VLMs) such as CLIP to downstream tasks. However, the prompt-based methods that are fine-tuned solely with base classes may struggle to generalize to novel…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Mushui Liu , Weijie He , Ziqian Lu , Yunlong Yu

Recent advances in visual-language models have shown remarkable zero-shot text-image matching ability that is transferable to downstream tasks such as object detection and segmentation. Adapting these models for object counting, however,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Ruixiang Jiang , Lingbo Liu , Changwen Chen

In the field of vision-language contrastive learning, models such as CLIP capitalize on matched image-caption pairs as positive examples and leverage within-batch non-matching pairs as negatives. This approach has led to remarkable outcomes…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Maxwell Aladago , Lorenzo Torresani , Soroush Vosoughi

LiDAR is one of the most crucial sensors for autonomous vehicle perception. However, current LiDAR-based point cloud perception algorithms lack comprehensive and rigorous LiDAR quality assessment methods, leading to uncertainty in detection…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Ce Zhang , Azim Eskandarian

Contrastive Language-Image Pretraining (CLIP) has achieved remarkable success, but its performance can degrade when fine-tuned in out-of-distribution (OOD) scenarios. We model the prediction process using a Structural Causal Model (SCM) and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Zeen Song , Siyu Zhao , Xingyu Zhang , Jiangmeng Li , Changwen Zheng , Wenwen Qiang