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Generative adversarial networks (GANs) are widely used in image generation tasks, yet the generated images are usually lack of texture details. In this paper, we propose a general framework, called Progressively Unfreezing Perceptual GAN…

计算机视觉与模式识别 · 计算机科学 2020-06-20 Jinxuan Sun , Yang Chen , Junyu Dong , Guoqiang Zhong

The reconstruction of real-world surfaces is on high demand in various applications. Most existing reconstruction approaches apply 3D scanners for creating point clouds which are generally sparse and of low density. These points clouds will…

计算机视觉与模式识别 · 计算机科学 2021-03-01 Rajat Sharma , Tobias Schwandt , Christian Kunert , Steffen Urban , Wolfgang Broll

The task of point cloud upsampling aims to acquire dense and uniform point sets from sparse and irregular point sets. Although significant progress has been made with deep learning models, state-of-the-art methods require ground-truth dense…

计算机视觉与模式识别 · 计算机科学 2022-06-14 Xinhai Liu , Xinchen Liu , Yu-Shen Liu , Zhizhong Han

In this paper we propose a novel point cloud generator that is able to reconstruct and generate 3D point clouds composed of semantic parts. Given a latent representation of the target 3D model, the generation starts from a single point and…

计算机视觉与模式识别 · 计算机科学 2021-06-01 Wei-Jan Ko , Hui-Yu Huang , Yu-Liang Kuo , Chen-Yi Chiu , Li-Heng Wang , Wei-Chen Chiu

In many applications, including surveillance, entertainment, and restoration, there is a need to increase both the spatial resolution and the frame rate of a video sequence. The aim is to improve visual quality, refine details, and create a…

图像与视频处理 · 电气工程与系统科学 2024-07-25 Congrui Fu , Hui Yuan , Liquan Shen , Raouf Hamzaoui , Hao Zhang

Pansharpening is a widely used image enhancement technique for remote sensing. Its principle is to fuse the input high-resolution single-channel panchromatic (PAN) image and low-resolution multi-spectral image and to obtain a…

计算机视觉与模式识别 · 计算机科学 2021-12-01 Zixiang Zhao , Jiangshe Zhang , Shuang Xu , Kai Sun , Lu Huang , Junmin Liu , Chunxia Zhang

Efficient processing and feature extraction of largescale point clouds are important in related computer vision and cyber-physical systems. This work investigates point cloud resampling based on hypergraph signal processing (HGSP) to better…

计算机视觉与模式识别 · 计算机科学 2022-03-02 Qinwen Deng , Songyang Zhang , Zhi Ding

This paper addresses the problem of generating dense point clouds from given sparse point clouds to model the underlying geometric structures of objects/scenes. To tackle this challenging issue, we propose a novel end-to-end learning-based…

计算机视觉与模式识别 · 计算机科学 2022-03-30 Yue Qian , Junhui Hou , Sam Kwong , Ying He

Point clouds obtained from 3D sensors are usually sparse. Existing methods mainly focus on upsampling sparse point clouds in a supervised manner by using dense ground truth point clouds. In this paper, we propose a self-supervised point…

计算机视觉与模式识别 · 计算机科学 2021-08-04 Yifan Zhao , Le Hui , Jin Xie

Learning-based methods have proven successful in compressing geometric information for point clouds. For attribute compression, however, they still lag behind non-learning-based methods such as the MPEG G-PCC standard. To bridge this gap,…

图像与视频处理 · 电气工程与系统科学 2024-07-22 Xiaolong Mao , Hui Yuan , Xin Lu , Raouf Hamzaoui , Wei Gao

Generative adversarial networks, which can generate metasurfaces based on a training set of high performance device layouts, have the potential to significantly reduce the computational cost of the metasurface design process. However, basic…

计算物理 · 物理学 2019-12-03 Fufang Wen , Jiaqi Jiang , Jonathan A. Fan

Among the major remaining challenges for generative adversarial networks (GANs) is the capacity to synthesize globally and locally coherent images with object shapes and textures indistinguishable from real images. To target this issue we…

计算机视觉与模式识别 · 计算机科学 2021-03-23 Edgar Schönfeld , Bernt Schiele , Anna Khoreva

Several recent work on speech synthesis have employed generative adversarial networks (GANs) to produce raw waveforms. Although such methods improve the sampling efficiency and memory usage, their sample quality has not yet reached that of…

声音 · 计算机科学 2020-10-26 Jungil Kong , Jaehyeon Kim , Jaekyoung Bae

The performance of facial super-resolution methods relies on their ability to recover facial structures and salient features effectively. Even though the convolutional neural network and generative adversarial network-based methods deliver…

计算机视觉与模式识别 · 计算机科学 2021-11-23 Abhishek Srivastava , Sukalpa Chanda , Umapada Pal

In minimally-invasive brain surgeries with indirect and narrow operating environments, 3D brain reconstruction is crucial. However, as requirements of accuracy for some new minimally-invasive surgeries (such as brain-computer interface…

图像与视频处理 · 电气工程与系统科学 2025-03-26 Bowen Hu , Weiheng Yao , Sibo Qiao , Hieu Pham , Shuqiang Wang , Michael Kwok-Po Ng

With the proliferation of Lidar sensors and 3D vision cameras, 3D point cloud analysis has attracted significant attention in recent years. After the success of the pioneer work PointNet, deep learning-based methods have been increasingly…

计算机视觉与模式识别 · 计算机科学 2022-06-15 Jiajing Chen , Burak Kakillioglu , Senem Velipasalar

This paper addresses the problem of remote sensing image pan-sharpening from the perspective of generative adversarial learning. We propose a novel deep neural network based method named PSGAN. To the best of our knowledge, this is one of…

计算机视觉与模式识别 · 计算机科学 2020-12-22 Qingjie Liu , Huanyu Zhou , Qizhi Xu , Xiangyu Liu , Yunhong Wang

Reconstruction-based methods have demonstrated very promising results for 3D anomaly detection. However, these methods face great challenges in handling high-precision point clouds due to the large scale and complex structure. In this…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Hanzhe Liang , Jie Zhang , Tao Dai , Linlin Shen , Jinbao Wang , Can Gao

The growing size of point clouds enlarges consumptions of storage, transmission, and computation of 3D scenes. Raw data is redundant, noisy, and non-uniform. Therefore, simplifying point clouds for achieving compact, clean, and uniform…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Yuanqi Li , Jianwei Guo , Xinran Yang , Shun Liu , Jie Guo , Xiaopeng Zhang , Yanwen Guo

Point cloud upsampling aims to generate dense and uniformly distributed point sets from sparse point clouds. Existing point cloud upsampling methods typically approach the task as an interpolation problem. They achieve upsampling by…

图像与视频处理 · 电气工程与系统科学 2025-02-28 Ziming Nie , Qiao Wu , Chenlei Lv , Siwen Quan , Zhaoshuai Qi , Muze Wang , Jiaqi Yang