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Computer vision algorithms are known to be extremely sensitive to the environmental conditions in which the data is captured, e.g., lighting conditions and target density. Tuning of parameters or choosing a completely new algorithm is often…

Computer Vision and Pattern Recognition · Computer Science 2016-05-24 Shu Zhang , Qi Zhu , Amit Roy-Chowdhury

This paper presents VideoStreaming, an advanced vision-language large model (VLLM) for video understanding, that capably understands arbitrary-length video with a constant number of video tokens streamingly encoded and adaptively selected.…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Rui Qian , Xiaoyi Dong , Pan Zhang , Yuhang Zang , Shuangrui Ding , Dahua Lin , Jiaqi Wang

Recently, considerable research attention has been paid to network embedding, a popular approach to construct feature vectors of vertices. Due to the curse of dimensionality and sparsity in graphical datasets, this approach has become…

Machine Learning · Computer Science 2018-11-15 Xi Liu , Ping-Chun Hsieh , Nick Duffield , Rui Chen , Muhe Xie , Xidao Wen

With the ongoing advancement of video technology and the emergence of new video platforms, suppliers of video contents are striving to ensure that the video quality meets the desire of consumers. Accessing a limited amount of channel…

Image and Video Processing · Electrical Eng. & Systems 2024-08-20 Masoumeh Farhadi Nia

In an adaptive bitrate streaming application, the efficiency of video compression and the encoded video quality depend on both the video codec and the quality metric used to perform encoding optimization. The development of such a quality…

Image and Video Processing · Electrical Eng. & Systems 2024-04-11 Yixu Chen , Zaixi Shang , Hai Wei , Yongjun Wu , Sriram Sethuraman

The growth in video Internet traffic and advancements in video attributes such as framerate, resolution, and bit-depth boost the demand to devise a large-scale, highly efficient video encoding environment. This is even more essential for…

With the increasing efforts of bringing high-quality virtual reality technologies into the market, efficient 360-degree video compression gains in importance. As such, the state-of-the-art H.266/VVC video coding standard integrates…

Image and Video Processing · Electrical Eng. & Systems 2024-02-19 Andy Regensky , Fabian Brand , André Kaup

We propose a rate-distortion optimization method for 3D videos based on visual discomfort estimation. We calculate visual discomfort in the encoded depth maps using two indexes: temporal outliers (TO) and spatial outliers (SO). These two…

Image and Video Processing · Electrical Eng. & Systems 2018-11-22 Dogancan Temel , Ghassan AlRegib

The rapid growth of user-generated videos on the Internet has intensified the need for text-based video retrieval systems. Traditional methods mainly favor the concept-based paradigm on retrieval with simple queries, which are usually…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Xun Yang , Jianfeng Dong , Yixin Cao , Xun Wang , Meng Wang , Tat-Seng Chua

Immersive videos (IVs) provide 360{\deg} environments that create a strong sense of presence and spatial exploration. Unlike traditional videos, IVs distribute information across multiple directions, making comparison cognitively demanding…

Human-Computer Interaction · Computer Science 2026-02-24 Xizi Wang , Yue Lyu , Yalong Yang , Jian Zhao

The demand for global video has been burgeoning across industries. With the expansion and improvement of video-streaming services, cloud-based video is evolving into a necessary feature of any successful business for reaching internal and…

Networking and Internet Architecture · Computer Science 2018-06-27 Abubakr O. Al-Abbasi , Vaneet Aggarwal

A 360 virtual reality (VR) video, recording a scene of interest in every direction, provides VR users with immersive viewing experience. However, transmission of a 360 VR video which is of a much larger size than a traditional video to…

Information Theory · Computer Science 2019-01-09 Kaixuan Long , Chencheng Ye , Ying Cui , Zhi Liu

Recently, end-to-end trainable deep neural networks have significantly improved stereo depth estimation for perspective images. However, 360{\deg} images captured under equirectangular projection cannot benefit from directly adopting…

Computer Vision and Pattern Recognition · Computer Science 2020-03-27 Ning-Hsu Wang , Bolivar Solarte , Yi-Hsuan Tsai , Wei-Chen Chiu , Min Sun

We propose a new method for the visual quality assessment of 360-degree (omnidirectional) videos. The proposed method is based on computing multiple spatio-temporal objective quality features on viewports extracted from 360-degree videos. A…

Multimedia · Computer Science 2021-05-04 Roberto G. de A. Azevedo , Neil Birkbeck , Ivan Janatra , Balu Adsumilli , Pascal Frossard

This paper presents a cross-layer video delivery scheme, StreamOptix, and proposes a joint optimization algorithm for video delivery that leverages the characteristics of the physical (PHY), medium access control (MAC), and application…

Multimedia · Computer Science 2024-06-10 Mufan Liu , Le Yang , Yifan Wang , Yiling Xu , Ye-Kui Wang , Yunfeng Guan

Recent advancements in deep learning techniques have significantly improved the quality of compressed videos. However, previous approaches have not fully exploited the motion characteristics of compressed videos, such as the drastic change…

Image and Video Processing · Electrical Eng. & Systems 2023-02-28 Thong Bach , Thuong Nguyen Canh , Van-Quang Nguyen

Nowadays 360 video analysis has become a significant research topic in the field since the appearance of high-quality and low-cost 360 wearable devices. In this paper, we propose a novel LiteFlowNet360 architecture for 360 videos optical…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Keshav Bhandari , Ziliang Zong , Yan Yan

Omnidirectional or 360-degree video is being increasingly deployed, largely due to the latest advancements in immersive virtual reality (VR) and extended reality (XR) technology. However, the adoption of these videos in streaming encounters…

Image and Video Processing · Electrical Eng. & Systems 2024-03-08 Ahmed Telili , Ibrahim Farhat , Wassim Hamidouche , Hadi Amirpour

Cross-modal encoders for vision-language (VL) tasks are often pretrained with carefully curated vision-language datasets. While these datasets reach an order of 10 million samples, the labor cost is prohibitive to scale further. Conversely,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-29 Zhecan Wang , Noel Codella , Yen-Chun Chen , Luowei Zhou , Xiyang Dai , Bin Xiao , Jianwei Yang , Haoxuan You , Kai-Wei Chang , Shih-fu Chang , Lu Yuan

Video streaming often requires transcoding content into different resolutions and bitrates to match the recipient's internet speed and screen capabilities. Video encoders like x264 offer various presets, each with different tradeoffs…