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Gradient-based saliency methods are widely used to interpret deep neural networks, yet they often produce noisy and unstable explanations that poorly align with semantically meaningful input features. We argue that a fundamental cause of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Ali Karkehabadi , Jamshid Hassanpour , Houman Homayoun , Avesta Sasan

We introduce MVSplat360, a feed-forward approach for 360{\deg} novel view synthesis (NVS) of diverse real-world scenes, using only sparse observations. This setting is inherently ill-posed due to minimal overlap among input views and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Yuedong Chen , Chuanxia Zheng , Haofei Xu , Bohan Zhuang , Andrea Vedaldi , Tat-Jen Cham , Jianfei Cai

In this paper we introduce a new dataset for 360-degree video summarization: the transformation of 360-degree video content to concise 2D-video summaries that can be consumed via traditional devices, such as TV sets and smartphones. The…

Computer Vision and Pattern Recognition · Computer Science 2024-06-06 Ioannis Kontostathis , Evlampios Apostolidis , Vasileios Mezaris

Video saliency detection (VSD) aims at fast locating the most attractive objects/things/patterns in a given video clip. Existing VSD-related works have mainly relied on the visual system but paid less attention to the audio aspect, while,…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Chenglizhao Chen , Mengke Song , Wenfeng Song , Li Guo , Muwei Jian

Image-based salient object detection (SOD) has been extensively studied in the past decades. However, video-based SOD is much less explored since there lack large-scale video datasets within which salient objects are unambiguously defined…

Computer Vision and Pattern Recognition · Computer Science 2017-05-10 Jia Li , Changqun Xia , Xiaowu Chen

In this paper, a self-supervised model that simultaneously predicts a sequence of future frames from video-input with a novel spatial-temporal attention (ST) network is proposed. The ST transformer network allows constraining both temporal…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Houssem Boulahbal , Adrian Voicila , Andrew Comport

The task of object segmentation in videos is usually accomplished by processing appearance and motion information separately using standard 2D convolutional networks, followed by a learned fusion of the two sources of information. On the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Sabarinath Mahadevan , Ali Athar , Aljoša Ošep , Sebastian Hennen , Laura Leal-Taixé , Bastian Leibe

Transformer-based models have achieved top performance on major video recognition benchmarks. Benefiting from the self-attention mechanism, these models show stronger ability of modeling long-range dependencies compared to CNN-based models.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-26 Rui Wang , Zuxuan Wu , Dongdong Chen , Yinpeng Chen , Xiyang Dai , Mengchen Liu , Luowei Zhou , Lu Yuan , Yu-Gang Jiang

We propose LocFormer, a Transformer-based model for video grounding which operates at a constant memory footprint regardless of the video length, i.e. number of frames. LocFormer is designed for tasks where it is necessary to process the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Cristian Rodriguez-Opazo , Edison Marrese-Taylor , Basura Fernando , Hiroya Takamura , Qi Wu

Estimating the depths of equirectangular (i.e., 360) images (EIs) is challenging given the distorted 180 x 360 field-of-view, which is hard to be addressed via convolutional neural network (CNN). Although a transformer with global attention…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Ilwi Yun , Chanyong Shin , Hyunku Lee , Hyuk-Jae Lee , Chae Eun Rhee

As 360{\deg} cameras become prevalent in many autonomous systems (e.g., self-driving cars and drones), efficient 360{\deg} perception becomes more and more important. We propose a novel self-supervised learning approach for predicting the…

Computer Vision and Pattern Recognition · Computer Science 2018-11-14 Fu-En Wang , Hou-Ning Hu , Hsien-Tzu Cheng , Juan-Ting Lin , Shang-Ta Yang , Meng-Li Shih , Hung-Kuo Chu , Min Sun

In this work, we address the problem of measuring and predicting temporal video saliency - a metric which defines the importance of a video frame for human attention. Unlike the conventional spatial saliency which defines the location of…

Human-Computer Interaction · Computer Science 2020-02-13 Oleksii Sidorov , Marius Pedersen , Nam Wook Kim , Sumit Shekhar

Salient object detection has been long studied to identify the most visually attractive objects in images/videos. Recently, a growing amount of approaches have been proposed all of which rely on the contour/edge information to improve…

Computer Vision and Pattern Recognition · Computer Science 2022-02-10 Yue Song , Hao Tang , Nicu Sebe , Wei Wang

Saliency detection is an active topic in the multimedia field. Most previous works on saliency detection focus on 2D images. However, these methods are not robust against complex scenes which contain multiple objects or complex backgrounds.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Chunbiao Zhu , Ge Li

Effective compression of 360$^\circ$ images, also referred to as omnidirectional images (ODIs), is of high interest for various virtual reality (VR) and related applications. 2D image compression methods ignore the equator-biased nature of…

Image and Video Processing · Electrical Eng. & Systems 2024-02-15 Oguzhan Gungordu , A. Murat Tekalp

Semantic segmentation based on sparse annotation has advanced in recent years. It labels only part of each object in the image, leaving the remainder unlabeled. Most of the existing approaches are time-consuming and often necessitate a…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Hui Su , Yue Ye , Wei Hua , Lechao Cheng , Mingli Song

Unlike conventional videos, 360{\deg} videos give freedom to users to turn their heads, watch and interact with the content owing to its immersive spherical environment. Although these movements are arbitrary, similarities can be observed…

Multimedia · Computer Science 2021-05-14 Amaya Dharmasiri , Chamara Kattadige , Vincent Zhang , Kanchana Thilakarathna

360-degree panoramic videos have gained considerable attention in recent years due to the rapid development of head-mounted displays (HMDs) and panoramic cameras. One major problem in streaming panoramic videos is that panoramic videos are…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Yuang Jiang , Konstantinos Poularakis , Diego Kiedanski , Sastry Kompella , Leandros Tassiulas

In this paper, we show that transferring knowledge from other domains of video understanding combined with large-scale learning can improve robustness of Video Object Segmentation (VOS) under complex circumstances. Namely, we focus on…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Volodymyr Fedynyak , Yaroslav Romanus , Oles Dobosevych , Igor Babin , Roman Riazantsev

This work explores attention models to weight the contribution of local convolutional representations for the instance search task. We present a retrieval framework based on bags of local convolutional features (BLCF) that benefits from…

Computer Vision and Pattern Recognition · Computer Science 2017-11-30 Eva Mohedano , Kevin McGuinness , Xavier Giro-i-Nieto , Noel E. O'Connor