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Summarizing a video requires a diverse understanding of the video, ranging from recognizing scenes to evaluating how much each frame is essential enough to be selected as a summary. Self-supervised learning (SSL) is acknowledged for its…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Minho Shim , Taeoh Kim , Jinhyung Kim , Dongyoon Wee

Although cameras are ubiquitous, robotic platforms typically rely on active sensors like LiDAR for direct 3D perception. In this work, we propose a novel self-supervised monocular depth estimation method combining geometry with a new deep…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Vitor Guizilini , Rares Ambrus , Sudeep Pillai , Allan Raventos , Adrien Gaidon

We propose a method of aligning a source image to a target image, where the transform is specified by a dense vector field. The two images are encoded as feature hierarchies by siamese convolutional nets. Then a hierarchy of aligner modules…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Eric Mitchell , Stefan Keselj , Sergiy Popovych , Davit Buniatyan , H. Sebastian Seung

Self-supervised pre-training of image encoders is omnipresent in the literature, particularly following the introduction of Masked autoencoders (MAE). Current efforts attempt to learn object-centric representations from motion in videos. In…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Alexandre Eymaël , Renaud Vandeghen , Anthony Cioppa , Silvio Giancola , Bernard Ghanem , Marc Van Droogenbroeck

The Vision Transformer (ViT) has demonstrated remarkable performance in Self-Supervised Learning (SSL) for 3D medical image analysis. Masked AutoEncoder (MAE) for feature pre-training can further unleash the potential of ViT on various…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Jiaxin Zhuang , Linshan Wu , Qiong Wang , Peng Fei , Varut Vardhanabhuti , Lin Luo , Hao Chen

Deep learning has enabled realistic face manipulation (i.e., deepfake), which poses significant concerns over the integrity of the media in circulation. Most existing deep learning techniques for deepfake detection can achieve promising…

Computer Vision and Pattern Recognition · Computer Science 2022-12-26 Bosheng Yan , Chang-Tsun Li , Xuequan Lu

State-of-the-art self-supervised learning approaches for monocular depth estimation usually suffer from scale ambiguity. They do not generalize well when applied on distance estimation for complex projection models such as in fisheye and…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Varun Ravi Kumar , Marvin Klingner , Senthil Yogamani , Stefan Milz , Tim Fingscheidt , Patrick Maeder

One major challenge in computer vision is to go beyond the modeling of individual objects and to investigate the bi- (one-versus-one) or tri- (one-versus-two) relationship among multiple visual entities, answering such questions as whether…

Computer Vision and Pattern Recognition · Computer Science 2015-07-22 Xiaoqian Qin , Xiaoyang Tan , Songcan Chen

In this paper, we introduce a novel unsupervised video denoising deep learning approach that can help to mitigate data scarcity issues and shows robustness against different noise patterns, enhancing its broad applicability. Our method…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Mary Damilola Aiyetigbo , Dineshchandar Ravichandran , Reda Chalhoub , Peter Kalivas , Nianyi Li

In this paper, we address the problem of unsupervised video anomaly detection (UVAD). The task aims to detect abnormal events in test video using unlabeled videos as training data. The presence of anomalies in the training data poses a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Jihun Yi , Sungroh Yoon

In this paper, we propose a kinship generator network that can synthesize a possible child face by analyzing his/her parent's photo. For this purpose, we focus on to handle the scarcity of kinship datasets throughout the paper by proposing…

Computer Vision and Pattern Recognition · Computer Science 2018-07-18 Savas Ozkan , Akin Ozkan

Video person re-identification attracts much attention in recent years. It aims to match image sequences of pedestrians from different camera views. Previous approaches usually improve this task from three aspects, including a) selecting…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Ruimao Zhang , Hongbin Sun , Jingyu Li , Yuying Ge , Liang Lin , Ping Luo , Xiaogang Wang

The development of deep learning models in medical image analysis is majorly limited by the lack of large-sized and well-annotated datasets. Unsupervised learning does not require labels and is more suitable for solving medical image…

Computer Vision and Pattern Recognition · Computer Science 2023-01-06 Zi'an Xu , Yin Dai , Fayu Liu , Weibing Chen , Yue Liu , Lifu Shi , Sheng Liu , Yuhang Zhou

Machine learning qualifies computers to assimilate with data, without being solely programmed [1, 2]. Machine learning can be classified as supervised and unsupervised learning. In supervised learning, computers learn an objective that…

Cutting-edge connected vehicle (CV) technologies have drawn much attention in recent years. The real-time traffic data captured by a CV can be shared with other CVs and data centers so as to open new possibilities for solving diverse…

Computer Vision and Pattern Recognition · Computer Science 2023-06-22 Shaocheng Jia , Wei Yao

The massive growth of network traffic data leads to a large volume of datasets. Labeling these datasets for identifying intrusion attacks is very laborious and error-prone. Furthermore, network traffic data have complex time-varying…

Cryptography and Security · Computer Science 2022-04-11 Amardeep Singh , Julian Jang-Jaccard

In this paper, we introduce MINTIME, a video deepfake detection approach that captures spatial and temporal anomalies and handles instances of multiple people in the same video and variations in face sizes. Previous approaches disregard…

Computer Vision and Pattern Recognition · Computer Science 2022-12-08 Davide Alessandro Coccomini , Giorgos Kordopatis Zilos , Giuseppe Amato , Roberto Caldelli , Fabrizio Falchi , Symeon Papadopoulos , Claudio Gennaro

Masked Autoencoder (MAE) has demonstrated superior performance on various vision tasks via randomly masking image patches and reconstruction. However, effective data augmentation strategies for MAE still remain open questions, different…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Kai Chen , Zhili Liu , Lanqing Hong , Hang Xu , Zhenguo Li , Dit-Yan Yeung

In the age of streaming and surveillance compressed video enhancement has become a problem in need of constant improvement. Here, we investigate a way of improving the Multi-Frame Quality Enhancement approach. This approach consists of…

Image and Video Processing · Electrical Eng. & Systems 2022-01-28 Dionne Takudzwa Chasi , Mkhuseli Ngxande

Human pose estimation has achieved significant progress in recent years. However, most of the recent methods focus on improving accuracy using complicated models and ignoring real-time efficiency. To achieve a better trade-off between…

Computer Vision and Pattern Recognition · Computer Science 2021-05-24 Lumin Xu , Yingda Guan , Sheng Jin , Wentao Liu , Chen Qian , Ping Luo , Wanli Ouyang , Xiaogang Wang