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Point clouds provide a compact and expressive representation of 3D objects, and have recently been integrated into multimodal large language models (MLLMs). However, existing methods primarily focus on static objects, while understanding…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Xindan Zhang , Weilong Yan , Yufei Shi , Xuerui Qiu , Tao He , Ying Li , Ming Li , Hehe Fan

Point clouds are a general format for representing realistic 3D objects in diverse 3D applications. Since point clouds have large data sizes, developing efficient point cloud compression methods is crucial. However, excessive compression…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Ryosuke Watanabe , Shashank N. Sridhara , Haoran Hong , Eduardo Pavez , Keisuke Nonaka , Tatsuya Kobayashi , Antonio Ortega

The visual quality of point clouds plays a crucial role in the development and broadcasting of immersive media. Therefore, investigating point cloud quality assessment (PCQA) is instrumental in facilitating immersive media applications,…

Image and Video Processing · Electrical Eng. & Systems 2025-01-28 Yipeng Liu , Qi Yang , Yujie Zhang , Yiling Xu , Le Yang , Xiaozhong Xu , Shan Liu

Virtual Reality (VR) and its applications have attracted significant and increasing attention. However, the requirements of much larger file sizes, different storage formats, and immersive viewing conditions pose significant challenges to…

Image and Video Processing · Electrical Eng. & Systems 2022-04-06 Meixu Chen , Yize Jin , Todd Goodall , Xiangxu Yu , Alan C. Bovik

Dynamic reconstruction and spatiotemporal novel-view synthesis of non-rigidly deforming scenes recently gained increased attention. While existing work achieves impressive quality and performance on multi-view or teleporting camera setups,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Moritz Kappel , Florian Hahlbohm , Timon Scholz , Susana Castillo , Christian Theobalt , Martin Eisemann , Vladislav Golyanik , Marcus Magnor

We present a new method for real-time non-rigid dense correspondence between point clouds based on structured shape construction. Our method, termed Deep Point Correspondence (DPC), requires a fraction of the training data compared to…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Itai Lang , Dvir Ginzburg , Shai Avidan , Dan Raviv

Point cloud streaming is increasingly getting popular, evolving into the norm for interactive service delivery and the future Metaverse. However, the substantial volume of data associated with point clouds presents numerous challenges,…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Yanlong Li , Chamara Madarasingha , Kanchana Thilakarathna

Real-world environment-derived point clouds invariably exhibit noise across varying modalities and intensities. Hence, point cloud denoising (PCD) is essential as a preprocessing step to improve downstream task performance. Deep learning…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Chengwei Zhang , Xueyi Zhang , Mingrui Lao , Tao Jiang , Xinhao Xu , Wenjie Li , Fubo Zhang , Longyong Chen

We introduce a cutting-edge video compression framework tailored for the age of ubiquitous video data, uniquely designed to serve machine learning applications. Unlike traditional compression methods that prioritize human visual perception,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Huan Cui , Qing Li , Hanling Wang , Yong jiang

Stable diffusion networks have emerged as a groundbreaking development for their ability to produce realistic and detailed visual content. This characteristic renders them ideal decoders, capable of producing high-quality and aesthetically…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Kai Liu , Kang You , Pan Gao

The great variations of videographic skills, camera designs, compression and processing protocols, and displays lead to an enormous variety of video impairments. Current no-reference (NR) video quality models are unable to handle this…

Image and Video Processing · Electrical Eng. & Systems 2018-11-06 Zeina Sinno , Alan C. Bovik

Video quality assessment (VQA) is an important processing task, aiming at predicting the quality of videos in a manner highly consistent with human judgments of perceived quality. Traditional VQA models based on natural image and/or video…

Image and Video Processing · Electrical Eng. & Systems 2024-12-12 Qi Zheng , Yibo Fan , Leilei Huang , Tianyu Zhu , Jiaming Liu , Zhijian Hao , Shuo Xing , Chia-Ju Chen , Xiongkuo Min , Alan C. Bovik , Zhengzhong Tu

Over the past decade, the online video industry has greatly expanded the volume of visual data that is streamed and shared over the Internet. Moreover, because of the increasing ease of video capture, many millions of consumers create and…

Image and Video Processing · Electrical Eng. & Systems 2021-09-15 Xiangxu Yu , Neil Birkbeck , Yilin Wang , Christos G. Bampis , Balu Adsumilli , Alan C. Bovik

Three-dimensional (3D) point cloud, as an emerging visual media format, is increasingly favored by consumers as it can provide more realistic visual information than two-dimensional (2D) data. Similar to 2D plane images and videos, point…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Wu Chen , Qiuping Jiang , Wei Zhou , Feng Shao , Guangtao Zhai , Weisi Lin

With the development of the 3D data acquisition facilities, the increasing scale of acquired 3D point clouds poses a challenge to the existing data compression techniques. Although promising performance has been achieved in static point…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Guangchi Fang , Qingyong Hu , Yiling Xu , Yulan Guo

Recent years have witnessed a broader range of applications of image processing technologies in multiple industrial processes, such as smoke detection, security monitoring, and workpiece inspection. Different kinds of distortion types and…

Computer Vision and Pattern Recognition · Computer Science 2024-02-19 Xuanchao Ma , Yanlin Jiang , Hongyan Liu , Chengxu Zhou , Ke Gu

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…

Computer Vision and Pattern Recognition · Computer Science 2025-01-20 Yating Liu , Yujie Zhang , Ziyu Shan , Yiling Xu

The quality evaluation of three deep learning-based coding solutions for point cloud geometry, notably ADLPCC, PCC GEO CNNv2, and PCGCv2, is presented. The MPEG G-PCC was used as an anchor. Furthermore, LUT SR, which uses multi-resolution…

Image and Video Processing · Electrical Eng. & Systems 2024-02-09 Joao Prazeres , Rafael Rodrigues , Manuela Pereira , Antonio M. G. Pinheiro

Depth estimation is an important step in many computer vision problems such as 3D reconstruction, novel view synthesis, and computational photography. Most existing work focuses on depth estimation from single frames. When applied to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Numair Khan , Eric Penner , Douglas Lanman , Lei Xiao

Video quality assessment (VQA) has attracted growing attention in recent years. While the great expense of annotating large-scale VQA datasets has become the main obstacle for current deep-learning methods. To surmount the constraint of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Hongbo Liu , Mingda Wu , Kun Yuan , Ming Sun , Yansong Tang , Chuanchuan Zheng , Xing Wen , Xiu Li