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Video compression relies heavily on exploiting the temporal redundancy between video frames, which is usually achieved by estimating and using the motion information. The motion information is represented as optical flows in most of the…

计算机视觉与模式识别 · 计算机科学 2023-07-12 Chuanbo Tang , Xihua Sheng , Zhuoyuan Li , Haotian Zhang , Li Li , Dong Liu

Achieving optimal performance of video diffusion transformers within given data and compute budget is crucial due to their high training costs. This necessitates precisely determining the optimal model size and training hyperparameters…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Yuanyang Yin , Yaqi Zhao , Mingwu Zheng , Ke Lin , Jiarong Ou , Rui Chen , Victor Shea-Jay Huang , Jiahao Wang , Xin Tao , Pengfei Wan , Di Zhang , Baoqun Yin , Wentao Zhang , Kun Gai

While many action recognition datasets consist of collections of brief, trimmed videos each containing a relevant action, videos in the real-world (e.g., on YouTube) exhibit very different properties: they are often several minutes long,…

计算机视觉与模式识别 · 计算机科学 2019-09-02 Bruno Korbar , Du Tran , Lorenzo Torresani

Video compression has always been a popular research area, where many traditional and deep video compression methods have been proposed. These methods typically rely on signal prediction theory to enhance compression performance by…

计算机视觉与模式识别 · 计算机科学 2023-08-31 Lv Tang , Xinfeng Zhang , Gai Zhang , Xiaoqi Ma

With more videos being recorded by edge sensors (cameras) and analyzed by computer-vision deep neural nets (DNNs), a new breed of video streaming systems has emerged, with the goal to compress and stream videos to remote servers in real…

网络与互联网体系结构 · 计算机科学 2022-04-28 Kuntai Du , Qizheng Zhang , Anton Arapin , Haodong Wang , Zhengxu Xia , Junchen Jiang

Inferring the quality of streaming video applications is important for Internet service providers, but the fact that most video streams are encrypted makes it difficult to do so. We develop models that infer quality metrics (\ie, startup…

网络与互联网体系结构 · 计算机科学 2019-08-15 Paul Schmitt , Francesco Bronzino , Sara Ayoubi , Guilherme Martins , Renata Teixeira , Nick Feamster

Neural networks can be successfully used to improve several modules of advanced video coding schemes. In particular, compression of colour components was shown to greatly benefit from usage of machine learning models, thanks to the design…

图像与视频处理 · 电气工程与系统科学 2021-02-10 Marc Górriz , Saverio Blasi , Alan F. Smeaton , Noel E. O'Connor , Marta Mrak

In text-video retrieval, recent works have benefited from the powerful learning capabilities of pre-trained text-image foundation models (e.g., CLIP) by adapting them to the video domain. A critical problem for them is how to effectively…

计算机视觉与模式识别 · 计算机科学 2023-08-16 Chaorui Deng , Qi Chen , Pengda Qin , Da Chen , Qi Wu

Accurately determining fluid viscosity is crucial for various industrial and scientific applications. Traditional methods of viscosity measurement, though reliable, often require manual intervention and cannot easily adapt to real-time…

机器学习 · 计算机科学 2023-12-05 Jong Hoon Park , Gauri Pramod Dalwankar , Alison Bartsch , Abraham George , Amir Barati Farimani

Contrastive Language-Image Pre-training (CLIP) on large-scale image-caption datasets learns representations that can achieve remarkable zero-shot generalization. However, such models require a massive amount of pre-training data. Improving…

计算机视觉与模式识别 · 计算机科学 2024-03-21 Siddharth Joshi , Arnav Jain , Ali Payani , Baharan Mirzasoleiman

In recent years, neural network-based image compression techniques have been able to outperform traditional codecs and have opened the gates for the development of learning-based video codecs. However, to take advantage of the high temporal…

图像与视频处理 · 电气工程与系统科学 2020-08-25 Aishwarya Jadhav

Video prediction is a challenging task. The quality of video frames from current state-of-the-art (SOTA) generative models tends to be poor and generalization beyond the training data is difficult. Furthermore, existing prediction…

计算机视觉与模式识别 · 计算机科学 2022-10-14 Vikram Voleti , Alexia Jolicoeur-Martineau , Christopher Pal

Overfitted neural video codecs offer a decoding complexity orders of magnitude smaller than their autoencoder counterparts. Yet, this low complexity comes at the cost of limited compression efficiency, in part due to their difficulty…

图像与视频处理 · 电气工程与系统科学 2025-03-27 Thomas Leguay , Théo Ladune , Pierrick Philippe , Olivier Deforges

Frequently accessed video streams are pre-transcoded into several formats to satisfy the characteristics of all display devices. Storing several video stream formats imposes a high cost on video stream providers using the old classical way.…

多媒体 · 计算机科学 2021-04-26 Mahmoud Darwich , Yasser Ismail , Talal Darwich , Magdy Bayoumi

Real-time CNN-based object detection models for applications like surveillance can achieve high accuracy but are computationally expensive. Recent works have shown 10 to 100x reduction in computation cost for inference by using…

计算机视觉与模式识别 · 计算机科学 2019-05-17 Kentaro Yoshioka , Edward Lee , Simon Wong , Mark Horowitz

Encoding textural content remains a challenge for current standardised video codecs. It is therefore beneficial to understand video textures in terms of both their spatio-temporal characteristics and their encoding statistics in order to…

图像与视频处理 · 电气工程与系统科学 2021-02-09 Angeliki V. Katsenou , Mariana Afonso , David R. Bull

This work focuses on reducing the computational cost of repeated video encodes by using a lower resolution clip as a proxy. Features extracted from the low resolution clip are used to learn an optimal lagrange multiplier for rate control on…

图像与视频处理 · 电气工程与系统科学 2022-04-20 Daniel J. Ringis , François Pitié , Anil Kokaram

Most existing real-time deep models trained with each frame independently may produce inconsistent results across the temporal axis when tested on a video sequence. A few methods take the correlations in the video sequence into…

计算机视觉与模式识别 · 计算机科学 2022-02-28 Yifan Liu , Chunhua Shen , Changqian Yu , Jingdong Wang

In recent years, many deep learning-based methods have been proposed to tackle the problem of optical flow estimation and achieved promising results. However, they hardly consider that most videos are compressed and thus ignore the…

计算机视觉与模式识别 · 计算机科学 2023-08-07 Shili Zhou , Xuhao Jiang , Weimin Tan , Ruian He , Bo Yan

Transient cloud servers such as Amazon Spot instances, Google Preemptible VMs, and Azure Low-priority batch VMs, can reduce cloud computing costs by as much as $10\times$, but can be unilaterally preempted by the cloud provider.…

分布式、并行与集群计算 · 计算机科学 2020-06-18 JCS Kadupitiya , Vikram Jadhao , Prateek Sharma