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Detecting small objects is notoriously challenging due to their low resolution and noisy representation. Existing object detection pipelines usually detect small objects through learning representations of all the objects at multiple…

Computer Vision and Pattern Recognition · Computer Science 2017-06-21 Jianan Li , Xiaodan Liang , Yunchao Wei , Tingfa Xu , Jiashi Feng , Shuicheng Yan

Convolutional Neural Networks (CNNs) have performed extremely well on data represented by regularly arranged grids such as images. However, directly leveraging the classic convolution kernels or parameter sharing mechanisms on sparse 3D…

Computer Vision and Pattern Recognition · Computer Science 2019-09-30 Mingtao Feng , Liang Zhang , Xuefei Lin , Syed Zulqarnain Gilani , Ajmal Mian

A learning-based adaptive loop filter is developed for the Geometry-based Point Cloud Compression (G-PCC) standard to reduce attribute compression artifacts. The proposed method first generates multiple Most-Probable Sample Offsets (MPSOs)…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Dandan Ding , Junzhe Zhang , Jianqiang Wang , Zhan Ma

We introduce the Probabilistic Generative Adversarial Network (PGAN), a new GAN variant based on a new kind of objective function. The central idea is to integrate a probabilistic model (a Gaussian Mixture Model, in our case) into the GAN…

Machine Learning · Computer Science 2017-08-08 Hamid Eghbal-zadeh , Gerhard Widmer

Owing to the development of research on local aggregation operators, dramatic breakthrough has been made in point cloud analysis models. However, existing local aggregation operators in the current literature fail to attach decent…

Computer Vision and Pattern Recognition · Computer Science 2021-06-02 Haotian Hu , Fanyi Wang , Huixiao Le

Generating high-fidelity time series data using generative adversarial networks (GANs) remains a challenging task, as it is difficult to capture the temporal dependence of joint probability distributions induced by time-series data. Towards…

Machine Learning · Computer Science 2024-04-09 Hang Lou , Siran Li , Hao Ni

In recent years, we have witnessed the presence of point cloud data in many aspects of our life, from immersive media, autonomous driving to healthcare, although at the cost of a tremendous amount of data. In this paper, we present an…

Image and Video Processing · Electrical Eng. & Systems 2024-03-21 Dat Thanh Nguyen , Andre Kaup

We introduce Kernel Density Discrimination GAN (KDD GAN), a novel method for generative adversarial learning. KDD GAN formulates the training as a likelihood ratio optimization problem where the data distributions are written explicitly via…

Machine Learning · Computer Science 2021-07-14 Abdelhak Lemkhenter , Adam Bielski , Alp Eren Sari , Paolo Favaro

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

Conditional generative adversarial networks have shown exceptional generation performance over the past few years. However, they require large numbers of annotations. To address this problem, we propose a novel generative adversarial…

Machine Learning · Computer Science 2020-03-06 Ligong Han , Ruijiang Gao , Mun Kim , Xin Tao , Bo Liu , Dimitris Metaxas

Applications that involve supervised training require paired images. Researchers of single image super-resolution (SISR) create such images by artificially generating blurry input images from the corresponding ground truth. Similarly we can…

Image and Video Processing · Electrical Eng. & Systems 2020-05-15 Nao Takano , Gita Alaghband

Conditional Generative Adversarial Networks (cGANs) have enabled controllable image synthesis for many vision and graphics applications. However, recent cGANs are 1-2 orders of magnitude more compute-intensive than modern recognition CNNs.…

Computer Vision and Pattern Recognition · Computer Science 2021-11-12 Muyang Li , Ji Lin , Yaoyao Ding , Zhijian Liu , Jun-Yan Zhu , Song Han

Point clouds (PC) are essential for AR/VR and autonomous driving but challenge compression schemes with their size, irregular sampling, and sparsity. MPEG's Geometry-based Point Cloud Compression (GPCC) methods successfully reduce bitrate;…

Image and Video Processing · Electrical Eng. & Systems 2025-11-10 Muhammad Talha , Qi Yang , Zhu Li , Anique Akhtar , Geert Van Der Auwera

We introduce EffiFusion-GAN (Efficient Fusion Generative Adversarial Network), a lightweight yet powerful model for speech enhancement. The model integrates depthwise separable convolutions within a multi-scale block to capture diverse…

Sound · Computer Science 2025-08-21 Bin Wen , Tien-Ping Tan

Automated lesion segmentation from computed tomography (CT) is an important and challenging task in medical image analysis. While many advancements have been made, there is room for continued improvements. One hurdle is that CT images can…

Computer Vision and Pattern Recognition · Computer Science 2018-07-20 Youbao Tang , Jinzheng Cai , Le Lu , Adam P. Harrison , Ke Yan , Jing Xiao , Lin Yang , Ronald M. Summers

Electrical tomography techniques have been widely employed for multiphase-flow monitoring owing to their non invasive nature, intrinsic safety, and low cost. Nevertheless, conventional reconstructions struggle to capture fine details, which…

Image and Video Processing · Electrical Eng. & Systems 2025-12-23 Wejian Yan

This paper introduces a novel convolution method, called generative convolution (GConv), which is simple yet effective for improving the generative adversarial network (GAN) performance. Unlike the standard convolution, GConv first selects…

Computer Vision and Pattern Recognition · Computer Science 2022-05-19 Seung Park , Yong-Goo Shin

In topology optimization using deep learning, load and boundary conditions represented as vectors or sparse matrices often miss the opportunity to encode a rich view of the design problem, leading to less than ideal generalization results.…

Computational Engineering, Finance, and Science · Computer Science 2020-03-12 Zhenguo Nie , Tong Lin , Haoliang Jiang , Levent Burak Kara

Three-dimensional geometric data offer an excellent domain for studying representation learning and generative modeling. In this paper, we look at geometric data represented as point clouds. We introduce a deep AutoEncoder (AE) network with…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Panos Achlioptas , Olga Diamanti , Ioannis Mitliagkas , Leonidas Guibas

We propose a video compression framework using conditional Generative Adversarial Networks (GANs). We rely on two encoders: one that deploys a standard video codec and another which generates low-level maps via a pipeline of down-sampling,…

Image and Video Processing · Electrical Eng. & Systems 2018-11-28 Sungsoo Kim , Jin Soo Park , Christos G. Bampis , Jaeseong Lee , Mia K. Markey , Alexandros G. Dimakis , Alan C. Bovik