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We propose a novel neural-network-based method to perform matting of videos depicting people that does not require additional user input such as trimaps. Our architecture achieves temporal stability of the resulting alpha mattes by using…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Ivan Molodetskikh , Mikhail Erofeev , Andrey Moskalenko , Dmitry Vatolin

In natural image matting, the goal is to estimate the opacity of the foreground object in the image. This opacity controls the way the foreground and background is blended in transparent regions. In recent years, advances in deep learning…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Sebastian Lutz , Aljosa Smolic

Salient object detection is the pixel-level dense prediction task which can highlight the prominent object in the scene. Recently U-Net framework is widely used, and continuous convolution and pooling operations generate multi-level…

Computer Vision and Pattern Recognition · Computer Science 2023-01-25 Zhengyi Liu , Yuan Wang , Zhengzheng Tu , Yun Xiao , Bin Tang

Image matting is an important vision problem. The main stream methods for it combine sampling-based methods and propagation-based methods. In this paper, we deal with the combination with a normalized weighting parameter, which could well…

Computer Vision and Pattern Recognition · Computer Science 2017-10-30 Ping Li , Tingyan Duan , Yongfeng Cao

Image matting refers to extracting precise alpha matte from natural images, and it plays a critical role in various downstream applications, such as image editing. Despite being an ill-posed problem, traditional methods have been trying to…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Jizhizi Li , Jing Zhang , Dacheng Tao

This paper proposes a deep learning based method for colored transparent object matting from a single image. Existing approaches for transparent object matting often require multiple images and long processing times, which greatly hinder…

Computer Vision and Pattern Recognition · Computer Science 2019-10-08 Jamal Ahmed Rahim , Kwan-Yee Kenneth Wong

Recent image matting studies are developing towards proposing trimap-free or interactive methods for complete complex image matting tasks. Although avoiding the extensive labors of trimap annotation, existing methods still suffer from two…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Dinghao Yang , Bin Wang , Weijia Li , Yiqi Lin , Conghui He

We propose a new and completely data-driven approach for generating a photo-consistent image transform. We show that simple classical algorithms which operate in the transform domain become extremely resilient to illumination changes. This…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Damian Kaliroff , Guy Gilboa

Image matting is an important computer vision problem. Many existing matting methods require a hand-made trimap to provide auxiliary information, which is very expensive and limits the real world usage. Recently, some trimap-free methods…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Hang Cheng , Shugong Xu , Xiufeng Jiang , Rongrong Wang

The current state of the art alpha matting methods mainly rely on the trimap as the secondary and only guidance to estimate alpha. This paper investigates the effects of utilising the background information as well as trimap in the process…

Computer Vision and Pattern Recognition · Computer Science 2020-02-12 Hossein Javidnia , François Pitié

The labelling difficulty has been a longstanding problem in deep image matting. To escape from fine labels, this work explores using rough annotations such as trimaps coarsely indicating the foreground/background as supervision. We present…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Wenze Liu , Zixuan Ye , Hao Lu , Zhiguo Cao , Xiangyu Yue

Automatic image matting (AIM) refers to estimating the soft foreground from an arbitrary natural image without any auxiliary input like trimap, which is useful for image editing. Prior methods try to learn semantic features to aid the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-16 Jizhizi Li , Jing Zhang , Dacheng Tao

Image matting is a longstanding problem in computational photography. Although, it has been studied for more than two decades, yet there is a challenge of developing an automatic matting algorithm which does not require any human efforts.…

Computer Vision and Pattern Recognition · Computer Science 2017-07-05 Vikas Gupta , Shanmuganathan Raman

Due to the difficulty of solving the matting problem, lots of methods use some kinds of assistance to acquire high quality alpha matte. Green screen matting methods rely on physical equipment. Trimap-based methods take manual interactions…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Jinlin Liu

We introduce in-context matting, a novel task setting of image matting. Given a reference image of a certain foreground and guided priors such as points, scribbles, and masks, in-context matting enables automatic alpha estimation on a batch…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 He Guo , Zixuan Ye , Zhiguo Cao , Hao Lu

Transformers have recently gained increasing attention in computer vision. However, existing studies mostly use Transformers for feature representation learning, e.g. for image classification and dense predictions, and the generalizability…

Computer Vision and Pattern Recognition · Computer Science 2021-12-08 Shengcai Liao , Ling Shao

We propose a Transformer-based framework for 3D human texture estimation from a single image. The proposed Transformer is able to effectively exploit the global information of the input image, overcoming the limitations of existing methods…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Xiangyu Xu , Chen Change Loy

Local feature matching between images remains a challenging task, especially in the presence of significant appearance variations, e.g., extreme viewpoint changes. In this work, we propose DeepMatcher, a deep Transformer-based network built…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Tao Xie , Kun Dai , Ke Wang , Ruifeng Li , Lijun Zhao

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

In many spatial trajectory-based applications, it is necessary to map raw trajectory data points onto road networks in digital maps, which is commonly referred to as a map-matching process. While most previous map-matching methods have…

Machine Learning · Computer Science 2023-08-15 Zhixiong Jin , Jiwon Kim , Hwasoo Yeo , Seongjin Choi