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Point cloud compression is essential to experience volumetric multimedia as it drastically reduces the required streaming data rates. Point attributes, specifically colors, extend the challenge of lossy compression beyond geometric…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Michael Rudolph , Aron Riemenschneider , Amr Rizk

An important aspect of video understanding is the ability to predict the evolution of its content in the future. This paper presents a future frame semantic segmentation technique for predicting semantic masks of the current and future…

Computer Vision and Pattern Recognition · Computer Science 2018-12-31 Talha Siddiqui , Samarth Bharadwaj

Because LiDAR sensors acquire point clouds with a fixed angular resolution, the resulting data can be systematically parameterized and efficiently compressed in the spherical coordinate system. Traditional spherical coordinate-based point…

Image and Video Processing · Electrical Eng. & Systems 2026-05-19 Chang Sun , Hui Yuan , Shiqi Jiang , Chongzhen Tian , Guanghui Zhang , Raouf Hamzaoui

We present a novel technique for self-supervised video representation learning by: (a) decoupling the learning objective into two contrastive subtasks respectively emphasizing spatial and temporal features, and (b) performing it…

Computer Vision and Pattern Recognition · Computer Science 2021-09-02 Zehua Zhang , David Crandall

We propose TimeHUT, a novel method for learning time-series representations by hierarchical uniformity-tolerance balancing of contrastive representations. Our method uses two distinct losses to learn strong representations with the aim of…

Machine Learning · Computer Science 2025-10-06 Amin Jalali , Milad Soltany , Michael Greenspan , Ali Etemad

Deep learning-based image compression has made great progresses recently. However, many leading schemes use serial context-adaptive entropy model to improve the rate-distortion (R-D) performance, which is very slow. In addition, the…

Image and Video Processing · Electrical Eng. & Systems 2023-09-07 Haisheng Fu , Feng Liang , Jie Liang , Yongqiang Wang , Guohe Zhang , Jingning Han

In this paper we present SA-CNN, a hierarchical and lightweight self-attention based encoding and decoding architecture for representation learning of point cloud data. The proposed SA-CNN introduces convolution and transposed convolution…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 En Yen Puang , Hao Zhang , Hongyuan Zhu , Wei Jing

We present a new permutation-invariant network for 3D point cloud processing. Our network is composed of a recurrent set encoder and a convolutional feature aggregator. Given an unordered point set, the encoder firstly partitions its…

Computer Vision and Pattern Recognition · Computer Science 2019-11-26 Pengxiang Wu , Chao Chen , Jingru Yi , Dimitris Metaxas

Video-based human pose estimation remains challenged by motion blur, occlusion, and complex spatiotemporal dynamics. Existing methods often rely on heatmaps or implicit spatio-temporal feature aggregation, which limits joint topology…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Quang Dang Huynh , Xuefei Yin , Andrew Busch , Hugo G. Espinosa , Alan Wee-Chung Liew , Matthew T. O. Worsey , Yanming Zhu

Point cloud upsampling is to densify a sparse point set acquired from 3D sensors, providing a denser representation for the underlying surface. Existing methods divide the input points into small patches and upsample each patch separately,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Chen Long , Wenxiao Zhang , Ruihui Li , Hao Wang , Zhen Dong , Bisheng Yang

Advanced video classification systems decode video frames to derive the necessary texture and motion representations for ingestion and analysis by spatio-temporal deep convolutional neural networks (CNNs). However, when considering visual…

Computer Vision and Pattern Recognition · Computer Science 2019-01-03 Mohammad Jubran , Alhabib Abbas , Aaron Chadha , Yiannis Andreopoulos

Recent development in deep learning techniques has attracted attention in decoding and classification in EEG signals. Despite several efforts utilizing different features of EEG signals, a significant research challenge is to use…

Machine Learning · Computer Science 2020-06-09 Avinash Kumar Singh , Chin-Teng Lin

Optimizing video inference efficiency has become increasingly important with the growing demand for video analysis in various fields. Some existing methods achieve high efficiency by explicit discard of spatial or temporal information,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Rui Deng , Qian Wu , Yuke Li , Haoran Fu

Compressing convolutional neural networks (CNNs) has received ever-increasing research focus. However, most existing CNN compression methods do not interpret their inherent structures to distinguish the implicit redundancy. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Yuchao Li , Shaohui Lin , Baochang Zhang , Jianzhuang Liu , David Doermann , Yongjian Wu , Feiyue Huang , Rongrong Ji

As its core computation, a self-attention mechanism gauges pairwise correlations across the entire input sequence. Despite favorable performance, calculating pairwise correlations is prohibitively costly. While recent work has shown the…

Machine Learning · Computer Science 2022-09-02 Amir Yazdanbakhsh , Ashkan Moradifirouzabadi , Zheng Li , Mingu Kang

We describe a simple pre-training approach for point clouds. It works in three steps: 1. Mask all points occluded in a camera view; 2. Learn an encoder-decoder model to reconstruct the occluded points; 3. Use the encoder weights as…

Computer Vision and Pattern Recognition · Computer Science 2021-10-15 Hanchen Wang , Qi Liu , Xiangyu Yue , Joan Lasenby , Matthew J. Kusner

This paper introduces {HINER}, a novel neural representation for compressing HSI and ensuring high-quality downstream tasks on compressed HSI. HINER fully exploits inter-spectral correlations by explicitly encoding of spectral wavelengths…

Image and Video Processing · Electrical Eng. & Systems 2024-08-01 Junqi Shi , Mingyi Jiang , Ming Lu , Tong Chen , Xun Cao , Zhan Ma

Large reasoning models achieve high accuracy through extended chain-of-thought but generate 5--8 more tokens than necessary, applying verbose reasoning uniformly regardless of problem difficulty. We propose Hint Tuning, a data-efficient…

Computation and Language · Computer Science 2026-05-12 Siqi Fan , Minghao Li , Xiaoqian Ma , Xiusheng Huang , Zhuo Chen , Bowen Qin , Liujie Zhang , Shuo Shang , Weihang Chen

Heterogeneous Information Network (HIN) embedding refers to the low-dimensional projections of the HIN nodes that preserve the HIN structure and semantics. HIN embedding has emerged as a promising research field for network analysis as it…

Machine Learning · Computer Science 2021-08-10 Rayyan Ahmad Khan , Martin Kleinsteuber

Correspondence search is an essential step in rigid point cloud registration algorithms. Most methods maintain a single correspondence at each step and gradually remove wrong correspondances. However, building one-to-one correspondence with…

Computer Vision and Pattern Recognition · Computer Science 2022-09-30 Jun-Jee Chao , Selim Engin , Nicolai Häni , Volkan Isler