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Self-supervised learning has not been fully explored for point cloud analysis. Current frameworks are mainly based on point cloud reconstruction. Given only 3D coordinates, such approaches tend to learn local geometric structures and…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Mingye Xu , Yali Wang , Zhipeng Zhou , Hongbin Xu , Yu Qiao

Recent advances in person re-identification have demonstrated enhanced discriminability, especially with supervised learning or transfer learning. However, since the data requirements---including the degree of data curations---are becoming…

Computer Vision and Pattern Recognition · Computer Science 2020-11-04 Kshitij Nikhal , Benjamin S. Riggan

The aim of crowd counting is to estimate the number of people in images by leveraging the annotation of center positions for pedestrians' heads. Promising progresses have been made with the prevalence of deep Convolutional Neural Networks.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Zhi-Qi Cheng , Jun-Xiu Li , Qi Dai , Xiao Wu , Alexander Hauptmann

Deep neural networks have been widely used in computer vision. There are several well trained deep neural networks for the ImageNet classification challenge, which has played a significant role in image recognition. However, little work has…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Youshan Zhang , Brian D. Davison

Person re-identification (re-ID) aims to recognize instances of the same person contained in multiple images taken across different cameras. Existing methods for re-ID tend to rely heavily on the assumption that both query and gallery…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Yu-Jhe Li , Zhengyi Luo , Xinshuo Weng , Kris M. Kitani

The difficulties in both data acquisition and annotation substantially restrict the sample sizes of training datasets for 3D medical imaging applications. As a result, constructing high-performance 3D convolutional neural networks from…

Image and Video Processing · Electrical Eng. & Systems 2022-01-06 Shu Zhang , Zihao Li , Hong-Yu Zhou , Jiechao Ma , Yizhou Yu

Semantic image segmentation is an essential component of modern autonomous driving systems, as an accurate understanding of the surrounding scene is crucial to navigation and action planning. Current state-of-the-art approaches in semantic…

Computer Vision and Pattern Recognition · Computer Science 2016-12-07 Tobias Pohlen , Alexander Hermans , Markus Mathias , Bastian Leibe

Lane detection is crucial for vehicle localization which makes it the foundation for automated driving and many intelligent and advanced driving assistant systems. Available vision-based lane detection methods do not make full use of the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Ruohan Li , Yongqi Dong

We propose a new self-supervised method for pre-training the backbone of deep perception models operating on point clouds. The core idea is to train the model on a pretext task which is the reconstruction of the surface on which the 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Alexandre Boulch , Corentin Sautier , Björn Michele , Gilles Puy , Renaud Marlet

Person re identification is a challenging retrieval task that requires matching a person's acquired image across non overlapping camera views. In this paper we propose an effective approach that incorporates both the fine and coarse pose…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 M. Saquib Sarfraz , Arne Schumann , Andreas Eberle , Rainer Stiefelhagen

Despite the promising progress made in recent years, person re-identification (re-ID) remains a challenging task due to the complex variations in human appearances from different camera views. For this challenging problem, a large variety…

Computer Vision and Pattern Recognition · Computer Science 2017-05-02 Xun Yang , Meng Wang , Richang Hong , Qi Tian , Yong Rui

Deep learning algorithms have recently achieved promising deraining performances on both the natural and synthetic rainy datasets. As an essential low-level pre-processing stage, a deraining network should clear the rain streaks and…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Shen Zheng , Changjie Lu , Yuxiong Wu , Gaurav Gupta

Deep network-based image Compressed Sensing (CS) has attracted much attention in recent years. However, the existing deep network-based CS schemes either reconstruct the target image in a block-by-block manner that leads to serious block…

Image and Video Processing · Electrical Eng. & Systems 2021-12-08 Wenxue Cui , Shaohui Liu , Feng Jiang , Debin Zhao

Deep learning approaches have achieved highly accurate face recognition by training the models with very large face image datasets. Unlike the availability of large 2D face image datasets, there is a lack of large 3D face datasets available…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Meng-Tzu Chiu , Hsun-Ying Cheng , Chien-Yi Wang , Shang-Hong Lai

Most of the achievements in artificial intelligence so far were accomplished by supervised learning which requires numerous annotated training data and thus costs innumerable manpower for labeling. Unsupervised learning is one of the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-14 Mingxiang Chen , Zhanguo Chang , Haonan Lu , Bitao Yang , Zhuang Li , Liufang Guo , Zhecheng Wang

In recent years, self-supervised denoising methods have gained significant success and become critically important in the field of image restoration. Among them, the blind spot network based methods are the most typical type and have…

Image and Video Processing · Electrical Eng. & Systems 2024-07-16 Xiangyu Liao , Tianheng Zheng , Jiayu Zhong , Pingping Zhang , Chao Ren

Mask-based lensless imagers are smaller and lighter than traditional lensed cameras. In these imagers, the sensor does not directly record an image of the scene; rather, a computational algorithm reconstructs it. Typically, mask-based…

Image and Video Processing · Electrical Eng. & Systems 2019-09-27 Kristina Monakhova , Joshua Yurtsever , Grace Kuo , Nick Antipa , Kyrollos Yanny , Laura Waller

Person re-identification (Re-ID) aims to match person images across non-overlapping camera views. The majority of Re-ID methods focus on small-scale surveillance systems in which each pedestrian is captured in different camera views of…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Wenhang Ge , Chunyan Pan , Ancong Wu , Hongwei Zheng , Wei-Shi Zheng

Under certain statistical assumptions of noise, recent self-supervised approaches for denoising have been introduced to learn network parameters without true clean images, and these methods can restore an image by exploiting information…

Computer Vision and Pattern Recognition · Computer Science 2020-01-10 Seunghwan Lee , Donghyeon Cho , Jiwon Kim , Tae Hyun Kim

General image super-resolution techniques have difficulties in recovering detailed face structures when applying to low resolution face images. Recent deep learning based methods tailored for face images have achieved improved performance…

Computer Vision and Pattern Recognition · Computer Science 2021-02-03 Chaofeng Chen , Dihong Gong , Hao Wang , Zhifeng Li , Kwan-Yee K. Wong