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How will you repair a physical object with large missings? You may first recover its global yet coarse shape and stepwise increase its local details. We are motivated to imitate the above physical repair procedure to address the point cloud…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Fei Hu , Honghua Chen , Xuequan Lu , Zhe Zhu , Jun Wang , Weiming Wang , Fu Lee Wang , Mingqiang Wei

Deep generative models have demonstrated great performance in image synthesis. However, results deteriorate in case of spatial deformations, since they generate images of objects directly, rather than modeling the intricate interplay of…

Computer Vision and Pattern Recognition · Computer Science 2018-04-16 Patrick Esser , Ekaterina Sutter , Björn Ommer

The advent of large language models, enabling flexibility through instruction-driven approaches, has revolutionized many traditional generative tasks, but large models for 3D data, particularly in comprehensively handling 3D shapes with…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Fukun Yin , Xin Chen , Chi Zhang , Biao Jiang , Zibo Zhao , Jiayuan Fan , Gang Yu , Taihao Li , Tao Chen

We propose a novel 3d shape representation for 3d shape reconstruction from a single image. Rather than predicting a shape directly, we train a network to generate a training set which will be fed into another learning algorithm to define…

Computer Vision and Pattern Recognition · Computer Science 2022-05-02 Biao Zhang , Peter Wonka

This work introduces a novel system for the generation of images that contain multiple classes of objects. Recent work in Generative Adversarial Networks have produced high quality images, but many focus on generating images of a single…

Machine Learning · Computer Science 2019-11-11 Elijah D. Bolluyt , Cristina Comaniciu

Portrait editing is a popular subject in photo manipulation. The Generative Adversarial Network (GAN) advances the generating of realistic faces and allows more face editing. In this paper, we argue about three issues in existing…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Shuyang Gu , Jianmin Bao , Hao Yang , Dong Chen , Fang Wen , Lu Yuan

Existing 3D reconstruction methods utilize guidances such as 2D images, 3D point clouds, shape contours and single semantics to recover the 3D surface, which limits the creative exploration of 3D modeling. In this paper, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Liangchen Li , Caoliwen Wang , Yuqi Zhou , Bailin Deng , Juyong Zhang

Point cloud completion aims to infer the complete geometries for missing regions of 3D objects from incomplete ones. Previous methods usually predict the complete point cloud based on the global shape representation extracted from the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Xin Wen , Tianyang Li , Zhizhong Han , Yu-Shen Liu

Deep Convolution Neural Networks (CNNs) can easily be fooled by subtle, imperceptible changes to the input images. To address this vulnerability, adversarial training creates perturbation patterns and includes them in the training set to…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Muzammal Naseer , Salman Khan , Munawar Hayat , Fahad Shahbaz Khan , Fatih Porikli

We present a novel alignment-before-generation approach to tackle the challenging task of generating general 3D shapes based on 2D images or texts. Directly learning a conditional generative model from images or texts to 3D shapes is prone…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Zibo Zhao , Wen Liu , Xin Chen , Xianfang Zeng , Rui Wang , Pei Cheng , Bin Fu , Tao Chen , Gang Yu , Shenghua Gao

Point cloud completion aims to recover raw point clouds captured by scanners from partial observations caused by occlusion and limited view angles. This makes it hard to recover details because the global feature is unlikely to capture the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Songxue Gao , Chuanqi Jiao , Ruidong Chen , Weijie Wang , Weizhi Nie

The availability of affordable and portable depth sensors has made scanning objects and people simpler than ever. However, dealing with occlusions and missing parts is still a significant challenge. The problem of reconstructing a (possibly…

Computer Vision and Pattern Recognition · Computer Science 2018-04-05 Or Litany , Alex Bronstein , Michael Bronstein , Ameesh Makadia

Large data-driven image models are extensively used to support creative and artistic work. Under the currently predominant distribution-fitting paradigm, a dataset is treated as ground truth to be approximated as closely as possible. Yet,…

Machine Learning · Computer Science 2023-06-16 Sebastian Berns , Simon Colton , Christian Guckelsberger

Given partial objects and some complete ones as references, point cloud completion aims to recover authentic shapes. However, existing methods pay little attention to general shapes, which leads to the poor authenticity of completion…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Kaiyi Zhang , Ximing Yang , Yuan Wu , Cheng Jin

To make 3D human avatars widely available, we must be able to generate a variety of 3D virtual humans with varied identities and shapes in arbitrary poses. This task is challenging due to the diversity of clothed body shapes, their complex…

Computer Vision and Pattern Recognition · Computer Science 2022-04-14 Xu Chen , Tianjian Jiang , Jie Song , Jinlong Yang , Michael J. Black , Andreas Geiger , Otmar Hilliges

Recent point-based object completion methods have demonstrated the ability to accurately recover the missing geometry of partially observed objects. However, these approaches are not well-suited for completing objects within a scene, as…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Wesley Khademi , Li Fuxin

Synthesizing geometrical shapes from human brain activities is an interesting and meaningful but very challenging topic. Recently, the advancements of deep generative models like Generative Adversarial Networks (GANs) have supported the…

Signal Processing · Electrical Eng. & Systems 2020-03-02 Xiang Zhang , Xiaocong Chen , Manqing Dong , Huan Liu , Chang Ge , Lina Yao

Task-oriented dexterous grasping remains challenging in robotic manipulations of open-world objects under severe partial observation, where significant missing data invalidates generic shape completion. In this paper, to overcome this…

Robotics · Computer Science 2026-04-14 Weishang Wu , Yifei Shi , Zhiping Cai

Potential radioactive hazards in full-dose positron emission tomography (PET) imaging remain a concern, whereas the quality of low-dose images is never desirable for clinical use. So it is of great interest to translate low-dose PET images…

Image and Video Processing · Electrical Eng. & Systems 2023-06-06 Yang Zhou , Zhiwen Yang , Hui Zhang , Eric I-Chao Chang , Yubo Fan , Yan Xu

Tuning curves characterizing the response selectivities of biological neurons often exhibit large degrees of irregularity and diversity across neurons. Theoretical network models that feature heterogeneous cell populations or random…

Quantitative Methods · Quantitative Biology 2017-07-20 Takafumi Arakaki , G. Barello , Yashar Ahmadian