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Point cloud is a fundamental 3D representation which is widely used in real world applications such as autonomous driving. As a newly-developed media format which is characterized by complexity and irregularity, point cloud creates a need…

计算机视觉与模式识别 · 计算机科学 2019-05-10 Wei Yan , Yiting shao , Shan Liu , Thomas H Li , Zhu Li , Ge Li

Virtual Production (VP) technologies have continued to improve the flexibility of on-set filming and enhance the live concert experience. The core technology of VP relies on high-resolution, high-brightness LED panels to playback/render…

图像与视频处理 · 电气工程与系统科学 2024-11-04 Anil Kokaram , Vibhoothi Vibhoothi , Julien Zouein , François Pitié , Christopher Nash , James Bentley , Philip Coulam-Jones

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

With the growth of 3D applications and the rapid increase in sensor-collected 3D point cloud data, there is a rising demand for efficient compression algorithms. Most existing learning-based compression methods handle geometry and color…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Tianxin Huang , Gim Hee Lee

Point clouds in 3D applications frequently experience quality degradation during processing, e.g., scanning and compression. Reliable point cloud quality assessment (PCQA) is important for developing compression algorithms with good…

计算机视觉与模式识别 · 计算机科学 2024-06-17 Ryosuke Watanabe , Keisuke Nonaka , Eduardo Pavez , Tatsuya Kobayashi , Antonio Ortega

Colored point cloud becomes a fundamental representation in the realm of 3D vision. Effective Point Cloud Compression (PCC) is urgently needed due to huge amount of data. In this paper, we propose an end-to-end Deep Joint Geometry and…

多媒体 · 计算机科学 2025-02-26 Yun Zhang , Zixi Guo , Linwei Zhu , C. -C. Jay Kuo

ITU-R BS.1387 states a method for objective assessment of perceived audio quality. This Recommendation, known also as PEAQ (Perceptual Evaluation of Audio Quality) is based on a psychoacoustic model of the human ear and was standardized by…

音频与语音处理 · 电气工程与系统科学 2019-10-31 Luis F. Abanto-Leon , Guillermo Kemper Vasquez , Joel Telles

A computationally-simplified and descriptor-richer Point Cloud Quality Assessment (PCQA) metric, namely PointPCA+, is proposed in this paper, which is an extension of PointPCA. PointPCA proposed a set of perceptually-relevant descriptors…

计算机视觉与模式识别 · 计算机科学 2023-11-27 Xuemei Zhou , Evangelos Alexiou , Irene Viola , Pablo Cesar

In this paper, we propose a reduced reference (RR) point cloud quality assessment (PCQA) model named R-PCQA to quantify the distortions introduced by the lossy compression. Specifically, we use the attribute and geometry quantization steps…

图像与视频处理 · 电气工程与系统科学 2023-01-04 Yipeng Liu , Qi Yang , Yiling Xu

While there exists a wide variety of Low Dynamic Range (LDR) quality metrics, only a limited number of metrics are designed specifically for the High Dynamic Range (HDR) content. With the introduction of HDR video compression…

图像与视频处理 · 电气工程与系统科学 2018-03-14 Maryam Azimi , Amin Banitalebi-Dehkordi , Yuanyuan Dong , Mahsa T. Pourazad , Panos Nasiopoulos

Subjective video quality assessment is crucial for optimizing streaming and compression, yet traditional protocols face limitations in capturing nuanced perceptual differences and ensuring reliable user input. We propose an integrated…

多媒体 · 计算机科学 2026-01-12 Kumar Rahul , Sriram Sethuraman , Andrew Segall , Yixu Chen

Several metrics exist to quantify the similarity between images, but they are inefficient when it comes to measure the similarity of highly distorted images. In this work, we propose to empirically investigate perceptual metrics based on…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Rémi Kazmierczak , Gianni Franchi , Nacim Belkhir , Antoine Manzanera , David Filliat

3D perception, especially point cloud classification, has achieved substantial progress. However, in real-world deployment, point cloud corruptions are inevitable due to the scene complexity, sensor inaccuracy, and processing imprecision.…

计算机视觉与模式识别 · 计算机科学 2022-06-15 Jiawei Ren , Liang Pan , Ziwei Liu

In the practical application of point cloud completion tasks, real data quality is usually much worse than the CAD datasets used for training. A small amount of noisy data will usually significantly impact the overall system's accuracy. In…

计算机视觉与模式识别 · 计算机科学 2023-03-06 Jieqi Shi , Peiliang Li , Xiaozhi Chen , Shaojie Shen

The performance of objective image quality assessment (IQA) models has been evaluated primarily by comparing model predictions to human quality judgments. Perceptual datasets gathered for this purpose have provided useful benchmarks for…

图像与视频处理 · 电气工程与系统科学 2021-01-25 Keyan Ding , Kede Ma , Shiqi Wang , Eero P. Simoncelli

JPEG is one of the most popular image compression methods. It is beneficial to compress those existing JPEG files without introducing additional distortion. In this paper, we propose a deep learning based method to further compress JPEG…

图像与视频处理 · 电气工程与系统科学 2023-08-28 Lina Guo , Yuanyuan Wang , Tongda Xu , Jixiang Luo , Dailan He , Zhenjun Ji , Shanshan Wang , Yang Wang , Hongwei Qin

Audio captioning quality metrics which are typically borrowed from the machine translation and image captioning areas measure the degree of overlap between predicted tokens and gold reference tokens. In this work, we consider a metric…

多媒体 · 计算机科学 2023-03-06 Rehana Mahfuz , Yinyi Guo , Erik Visser

In machine learning, research has traditionally focused on model development, with relatively less attention paid to training data. As model architectures have matured and marginal gains from further refinements diminish, data quality has…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Pei-Han Chen , Szu-Chi Chung

The plenoptic point cloud that has multiple colors from various directions, is a more complete representation than the general point cloud that usually has only one color. It is more realistic but also brings a larger volume of data that…

图像与视频处理 · 电气工程与系统科学 2019-11-05 Li Li , Zhu Li , Shan Liu , Houqiang Li

As two fundamental representation modalities of 3D objects, 3D point clouds and multi-view 2D images record shape information from different domains of geometric structures and visual appearances. In the current deep learning era,…

计算机视觉与模式识别 · 计算机科学 2023-06-16 Qijian Zhang , Junhui Hou , Yue Qian
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