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Full-reference point cloud quality assessment (FR-PCQA) aims to infer the quality of distorted point clouds with available references. Most of the existing FR-PCQA metrics ignore the fact that the human visual system (HVS) dynamically…

计算机视觉与模式识别 · 计算机科学 2024-09-30 Yujie Zhang , Qi Yang , Yiling Xu , Shan Liu

With the rapid development of 3D vision, point cloud has become an increasingly popular 3D visual media content. Due to the irregular structure, point cloud has posed novel challenges to the related research, such as compression,…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Ziyu Shan , Qi Yang , Rui Ye , Yujie Zhang , Yiling Xu , Xiaozhong Xu , Shan Liu

The explosive growth of videos on streaming media platforms has underscored the urgent need for effective video quality assessment (VQA) algorithms to monitor and perceptually optimize the quality of streaming videos. However, VQA remains…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Qihang Ge , Wei Sun , Yu Zhang , Yunhao Li , Zhongpeng Ji , Fengyu Sun , Shangling Jui , Xiongkuo Min , Guangtao Zhai

With the wide applications of colored point cloud in many fields, point cloud perceptual quality assessment plays a vital role in the visual communication systems owing to the existence of quality degradations introduced in various stages.…

计算机视觉与模式识别 · 计算机科学 2022-12-01 Qi Liu , Yiyun Liu , Honglei Su , Hui Yuan , Raouf Hamzaoui

While recent advancements in large multimodal models (LMMs) have significantly improved their abilities in image quality assessment (IQA) relying on absolute quality rating, how to transfer reliable relative quality comparison outputs to…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Hanwei Zhu , Haoning Wu , Yixuan Li , Zicheng Zhang , Baoliang Chen , Lingyu Zhu , Yuming Fang , Guangtao Zhai , Weisi Lin , Shiqi Wang

Point clouds are widely used in 3D content representation and have various applications in multimedia. However, compression and simplification processes inevitably result in the loss of quality-aware information under storage and bandwidth…

计算机视觉与模式识别 · 计算机科学 2023-10-27 Zicheng Zhang , Yingjie Zhou , Wei Sun , Xiongkuo Min , Guangtao Zhai

The prevalence of user-generated content (UGC) on platforms such as YouTube and TikTok has rendered no-reference (NR) perceptual video quality assessment (VQA) vital for optimizing video delivery. Nonetheless, the characteristics of…

图像与视频处理 · 电气工程与系统科学 2025-11-11 Xinyi Wang , Angeliki Katsenou , Junxiao Shen , David Bull

Among the various means to evaluate the quality of video streams, No-Reference (NR) methods have low computation and may be executed on thin clients. Thus, NR algorithms would be perfect candidates in cases of real-time quality assessment,…

多媒体 · 计算机科学 2016-04-28 Maria Torres Vega , Decebal Constantin Mocanu , Antonio Liotta

We present a novel quality assessment method which can predict the perceptual quality of point clouds from new scenes without available annotations by leveraging the rich prior knowledge in images, called the Distribution-Weighted…

计算机视觉与模式识别 · 计算机科学 2025-01-24 Yipeng Liu , Qi Yang , Yujie Zhang , Yiling Xu , Le Yang , Zhu Li

Point cloud quality assessment (PCQA) has become an appealing research field in recent days. Considering the importance of saliency detection in quality assessment, we propose an effective full-reference PCQA metric which makes the first…

计算机视觉与模式识别 · 计算机科学 2022-10-03 Zhengyu Wang , Yujie Zhang , Qi Yang , Yiling Xu , Jun Sun , Shan Liu

The goal of objective point cloud quality assessment (PCQA) research is to develop quantitative metrics that measure point cloud quality in a perceptually consistent manner. Merging the research of cognitive science and intuition of the…

计算机视觉与模式识别 · 计算机科学 2023-11-30 Yujie Zhang , Qi Yang , Yifei Zhou , Xiaozhong Xu , Le Yang , Yiling Xu

No-Reference Point Cloud Quality Assessment (NR-PCQA) aims to objectively assess the human perceptual quality of point clouds without relying on pristine-quality point clouds for reference. It is becoming increasingly significant with the…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Ziyu Shan , Yujie Zhang , Yipeng Liu , Yiling Xu

Currently, great numbers of efforts have been put into improving the effectiveness of 3D model quality assessment (3DQA) methods. However, little attention has been paid to the computational costs and inference time, which is also important…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Zicheng Zhang , Wei Sun , Yingjie Zhou , Wei Lu , Yucheng Zhu , Xiongkuo Min , Guangtao Zhai

In recent years, No-Reference Point Cloud Quality Assessment (NR-PCQA) research has achieved significant progress. However, existing methods mostly seek a direct mapping function from visual data to the Mean Opinion Score (MOS), which is…

计算机视觉与模式识别 · 计算机科学 2025-01-20 Yating Liu , Yujie Zhang , Ziyu Shan , Yiling Xu

In this paper we investigate into the problem of image quality assessment (IQA) and enhancement via machine learning. This issue has long attracted a wide range of attention in computational intelligence and image processing communities,…

计算机视觉与模式识别 · 计算机科学 2019-04-19 Ke Gu , Dacheng Tao , Junfei Qiao , Weisi Lin

No-reference video quality assessment (NR-VQA) for user generated content (UGC) is crucial for understanding and improving visual experience. Unlike video recognition tasks, VQA tasks are sensitive to changes in input resolution. Since…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Junjie Ke , Tianhao Zhang , Yilin Wang , Peyman Milanfar , Feng Yang

In this paper, we present a novel method of no-reference image quality assessment (NR-IQA), which is to predict the perceptual quality score of a given image without using any reference image. The proposed method harnesses three functions…

计算机视觉与模式识别 · 计算机科学 2017-05-30 Diqi Chen , Yizhou Wang , Tianfu Wu , Wen Gao

No-reference bitstream-layer point cloud quality assessment (PCQA) can be deployed without full decoding at any network node to achieve real-time quality monitoring. In this work, we develop the first PCQA model dedicated to Trisoup-Lifting…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Juncheng Long , Honglei Su , Qi Liu , Hui Yuan , Wei Gao , Jiarun Song , Zhou Wang

Quality assessment of videos is crucial for many computer graphics applications, including video games, virtual reality, and augmented reality, where visual performance has a significant impact on user experience. When test videos cannot be…

计算机视觉与模式识别 · 计算机科学 2025-10-16 Sipeng Yang , Jiayu Ji , Qingchuan Zhu , Zhiyao Yang , Xiaogang Jin

Video quality assessment (VQA) is a challenging research topic with broad applications. Traditional hand-crafted and discriminative learning-based VQA models mainly focus on pixel-level distortions and lack contextual understanding, while…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Wen Wen , Yaohong Wu , Yue Sheng , Neil Birkbeck , Balu Adsumilli , Yilin Wang