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The use of self-supervised pre-training has emerged as a promising approach to enhance the performance of many different visual tasks. In this context, recent approaches have employed the Masked Image Modeling paradigm, which pre-trains a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-23 Lorenzo Baraldi , Roberto Amoroso , Marcella Cornia , Lorenzo Baraldi , Andrea Pilzer , Rita Cucchiara

Object detection in Unmanned Aerial Vehicle (UAV) images poses significant challenges due to complex scale variations and class imbalance among objects. Existing methods often address these challenges separately, overlooking the intricate…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Zhenteng Li , Sheng Lian , Dengfeng Pan , Youlin Wang , Wei Liu

This paper proposes a space-time multi-scale attention network (STANet) to solve density map estimation, localization and tracking in dense crowds of video clips captured by drones with arbitrary crowd density, perspective, and flight…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Longyin Wen , Dawei Du , Pengfei Zhu , Qinghua Hu , Qilong Wang , Liefeng Bo , Siwei Lyu

This study proposes an automated data mining framework based on autoencoders and experimentally verifies its effectiveness in feature extraction and data dimensionality reduction. Through the encoding-decoding structure, the autoencoder can…

Machine Learning · Computer Science 2024-12-04 Yaxin Liang , Xinshi Li , Xin Huang , Ziqi Zhang , Yue Yao

In this paper we present a a deep generative model for lossy video compression. We employ a model that consists of a 3D autoencoder with a discrete latent space and an autoregressive prior used for entropy coding. Both autoencoder and prior…

Image and Video Processing · Electrical Eng. & Systems 2020-05-11 Amirhossein Habibian , Ties van Rozendaal , Jakub M. Tomczak , Taco S. Cohen

Researchers have presented systems for efficiently analysing video data at scale using sampling algorithms. While these systems effectively leverage the temporal redundancy present in videos, they suffer from three limitations. First, they…

Databases · Computer Science 2021-04-06 Jaeho Bang , Pramod Chunduri , Joy Arulraj

Monocular depth estimation (MDE) plays a pivotal role in various computer vision applications, such as robotics, augmented reality, and autonomous driving. Despite recent advancements, existing methods often fail to meet key requirements…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Andrii Litvynchuk , Ivan Livinsky , Anand Ravi , Nima Kalantari , Andrii Tsarov

The growing demand for robots to operate effectively in diverse environments necessitates the need for robust real-time anomaly detection techniques during robotic operations. However, deep learning-based models in robotics face significant…

Robotics · Computer Science 2025-06-24 Taewook Kang , Bum-Jae You , Juyoun Park , Yisoo Lee

Occlusion is one of the fundamental challenges in crowd counting. In the community, various data-driven approaches have been developed to address this issue, yet their effectiveness is limited. This is mainly because most existing crowd…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Runling Long , Yunlong Wang , Jia Wan , Xiang Deng , Xinting Zhu , Weili Guan , Antoni B. Chan , Liqiang Nie

Current perception models in autonomous driving heavily rely on large-scale labelled 3D data, which is both costly and time-consuming to annotate. This work proposes a solution to reduce the dependence on labelled 3D training data by…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Chen Min , Xinli Xu , Dawei Zhao , Liang Xiao , Yiming Nie , Bin Dai

Dense stereo matching with deep neural networks is of great interest to the research community. Existing stereo matching networks typically use slow and computationally expensive 3D convolutions to improve the performance, which is not…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Zhengyu Huang , Theodore B. Norris , Panqu Wang

Image clustering is one of the most important computer vision applications, which has been extensively studied in literature. However, current clustering methods mostly suffer from lack of efficiency and scalability when dealing with…

Machine Learning · Computer Science 2017-08-10 Kamran Ghasedi Dizaji , Amirhossein Herandi , Cheng Deng , Weidong Cai , Heng Huang

One of the core components of conventional (i.e., non-learned) video codecs consists of predicting a frame from a previously-decoded frame, by leveraging temporal correlations. In this paper, we propose an end-to-end learned system for…

Image and Video Processing · Electrical Eng. & Systems 2020-04-22 Nannan Zou , Honglei Zhang , Francesco Cricri , Hamed R. Tavakoli , Jani Lainema , Emre Aksu , Miska Hannuksela , Esa Rahtu

We introduce LayerLock, a simple yet effective approach for self-supervised visual representation learning, that gradually transitions from pixel to latent prediction through progressive layer freezing. First, we make the observation that…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Goker Erdogan , Nikhil Parthasarathy , Catalin Ionescu , Drew A. Hudson , Alexander Lerchner , Andrew Zisserman , Mehdi S. M. Sajjadi , Joao Carreira

Crowd counting aims to predict the number of people and generate the density map in the image. There are many challenges, including varying head scales, the diversity of crowd distribution across images and cluttered backgrounds. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Xin Wang , Yang Zhao , Tangwen Yang , Qiuqi Ruan

High-speed vision sensing is essential for real-time perception in applications such as robotics, autonomous vehicles, and industrial automation. Traditional frame-based vision systems suffer from motion blur, high latency, and redundant…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Riadul Islam , Joey Mulé , Dhandeep Challagundla , Shahmir Rizvi , Sean Carson

We present a novel approach for the detection of deepfake videos using a pair of vision transformers pre-trained by a self-supervised masked autoencoding setup. Our method consists of two distinct components, one of which focuses on…

Computer Vision and Pattern Recognition · Computer Science 2024-02-12 Sayantan Das , Mojtaba Kolahdouzi , Levent Özparlak , Will Hickie , Ali Etemad

Automatically describing a video with natural language is regarded as a fundamental challenge in computer vision. The problem nevertheless is not trivial especially when a video contains multiple events to be worthy of mention, which often…

Computer Vision and Pattern Recognition · Computer Science 2018-04-24 Yehao Li , Ting Yao , Yingwei Pan , Hongyang Chao , Tao Mei

State-of-the-art crowd counting models follow an encoder-decoder approach. Images are first processed by the encoder to extract features. Then, to account for perspective distortion, the highest-level feature map is fed to extra components…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Yiming Ma , Victor Sanchez , Tanaya Guha

We propose a new task and model for dense video object captioning -- detecting, tracking and captioning trajectories of objects in a video. This task unifies spatial and temporal localization in video, whilst also requiring fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Xingyi Zhou , Anurag Arnab , Chen Sun , Cordelia Schmid