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Video Question Answering (VideoQA) in the surgical domain aims to enhance intraoperative understanding by enabling AI models to reason over temporally coherent events rather than isolated frames. Current approaches are limited to static…

In this paper we introduce the temporally factorized 3D convolution (3TConv) as an interpretable alternative to the regular 3D convolution (3DConv). In a 3TConv the 3D convolutional filter is obtained by learning a 2D filter and a set of…

计算机视觉与模式识别 · 计算机科学 2020-06-30 Gabriëlle Ras , Luca Ambrogioni , Pim Haselager , Marcel A. J. van Gerven , Umut Güçlü

Video quality assessment (VQA) is a challenging problem due to the numerous factors that can affect the perceptual quality of a video, \eg, content attractiveness, distortion type, motion pattern, and level. However, annotating the Mean…

计算机视觉与模式识别 · 计算机科学 2024-05-29 Kun Yuan , Hongbo Liu , Mading Li , Muyi Sun , Ming Sun , Jiachao Gong , Jinhua Hao , Chao Zhou , Yansong Tang

Perceptual quality assessment of the videos acquired in the wilds is of vital importance for quality assurance of video services. The inaccessibility of reference videos with pristine quality and the complexity of authentic distortions pose…

图像与视频处理 · 电气工程与系统科学 2022-04-06 Bowen Li , Weixia Zhang , Meng Tian , Guangtao Zhai , Xianpei Wang

Synthetic facial videos have proliferated across social media faster than platform moderation can respond, raising the cost of disinformation and identity-based attacks. Frame-level deepfake detectors degrade sharply as generator quality…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Mohammadreza Rashidi , Raja Hashim Ali , Sami Ur Rahman

Human action recognition has become an important research focus in computer vision due to the wide range of applications where it is used. 3D Resnet-based CNN models, particularly MC3, R3D, and R(2+1)D, have different convolutional filters…

计算机视觉与模式识别 · 计算机科学 2026-01-19 Mohammad Rasras , Iuliana Marin , Serban Radu , Irina Mocanu

This thesis explore different approaches using Convolutional and Recurrent Neural Networks to classify and temporally localize activities on videos, furthermore an implementation to achieve it has been proposed. As the first step, features…

计算机视觉与模式识别 · 计算机科学 2017-03-06 Alberto Montes , Amaia Salvador , Santiago Pascual , Xavier Giro-i-Nieto

Recently, three dimensional (3D) convolutional neural networks (CNNs) have emerged as dominant methods to capture spatiotemporal representations in videos, by adding to pre-existing 2D CNNs a third, temporal dimension. Such 3D CNNs,…

计算机视觉与模式识别 · 计算机科学 2019-09-04 Gurkirt Singh , Fabio Cuzzolin

Free-form video inpainting is a very challenging task that could be widely used for video editing such as text removal. Existing patch-based methods could not handle non-repetitive structures such as faces, while directly applying…

计算机视觉与模式识别 · 计算机科学 2019-07-24 Ya-Liang Chang , Zhe Yu Liu , Kuan-Ying Lee , Winston Hsu

The Earth's surface is continually changing, and identifying changes plays an important role in urban planning and sustainability. Although change detection techniques have been successfully developed for many years, these techniques are…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Zhenghang Yuan , Lichao Mou , Zhitong Xiong , Xiaoxiang Zhu

This study proposes a practical approach for compressing 360-degree equirectangular videos using pretrained neural video compression (NVC) models. Without requiring additional training or changes in the model architectures, the proposed…

图像与视频处理 · 电气工程与系统科学 2025-12-24 Daichi Arai , Yuichi Kondo , Kyohei Unno , Yasuko Sugito , Yuichi Kusakabe

Semantic segmentation is a well-addressed topic in the computer vision literature, but the design of fast and accurate video processing networks remains challenging. In addition, to run on embedded hardware, computer vision models often…

计算机视觉与模式识别 · 计算机科学 2022-06-20 Evann Courdier , François Fleuret

In recent years 3D object detection from LiDAR point clouds has made great progress thanks to the development of deep learning technologies. Although voxel or point based methods are popular in 3D object detection, they usually involve…

计算机视觉与模式识别 · 计算机科学 2022-07-18 Jiaqi Gu , Zhiyu Xiang , Pan Zhao , Tingming Bai , Lingxuan Wang , Xijun Zhao , Zhiyuan Zhang

Convolutional neural network (CNN) slides a kernel over the whole image to produce an output map. This kernel scheme reduces the number of parameters with respect to a fully connected neural network (NN). While CNN has proven to be an…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Ihsan Ullah , Alfredo Petrosino

3D convolutional neural networks have achieved promising results for video tasks in computer vision, including video saliency prediction that is explored in this paper. However, 3D convolution encodes visual representation merely on fixed…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Ziqiang Wang , Zhi Liu , Gongyang Li , Yang Wang , Tianhong Zhang , Lihua Xu , Jijun Wang

In this paper, we propose a novel quadratic optimized model based on the deep convolutional neural network (QODCNN) for full-reference and no-reference screen content image (SCI) quality assessment. Unlike traditional CNN methods taking all…

计算机视觉与模式识别 · 计算机科学 2019-03-05 Xuhao Jiang , Liquan Shen , Guorui Feng , Liangwei Yu , Ping An

Video-based behavior recognition is essential in fields such as public safety, intelligent surveillance, and human-computer interaction. Traditional 3D Convolutional Neural Network (3D CNN) effectively capture local spatiotemporal features…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Xiuliang Zhang , Tadiwa Elisha Nyamasvisva , Chuntao Liu

Deep learning-based quality metrics have recently given significant improvement in Image Quality Assessment (IQA). In the field of stereoscopic vision, information is evenly distributed with slight disparity to the left and right eyes.…

图像与视频处理 · 电气工程与系统科学 2022-11-04 Oussama Messai , Aladine Chetouani

The rapid advancement of generative models has led to a growing volume of AI-generated videos, making the automatic quality assessment of such videos increasingly important. Existing AI-generated content video quality assessment (AIGC-VQA)…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Minghao Zou , Gen Liu , Guanghui Yue , Baoquan Zhao , Zhihua Wang , Paul L. Rosin , Hantao Liu , Wei Zhou

This paper describes a quality assessment model for perceptual video compression applications (PVM), which stimulates visual masking and distortion-artefact perception using an adaptive combination of noticeable distortions and blurring…

图像与视频处理 · 电气工程与系统科学 2021-06-16 Fan Zhang , David R. Bull