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In this paper, we propose to utilize Convolutional Neural Networks (CNNs) and the segmentation-based multi-scale analysis to locate tampered areas in digital images. First, to deal with color input sliding windows of different scales, a…

Computer Vision and Pattern Recognition · Computer Science 2018-12-26 Yaqi Liu , Qingxiao Guan , Xianfeng Zhao , Yun Cao

For the semantic segmentation of images, state-of-the-art deep neural networks (DNNs) achieve high segmentation accuracy if that task is restricted to a closed set of classes. However, as of now DNNs have limited ability to operate in an…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Svenja Uhlemeyer , Matthias Rottmann , Hanno Gottschalk

3D point cloud segmentation remains challenging for structureless and textureless regions. We present a new unified point-based framework for 3D point cloud segmentation that effectively optimizes pixel-level features, geometrical…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Hung-Yueh Chiang , Yen-Liang Lin , Yueh-Cheng Liu , Winston H. Hsu

Top-down methods dominate the field of 3D human pose and shape estimation, because they are decoupled from human detection and allow researchers to focus on the core problem. However, cropping, their first step, discards the location…

Computer Vision and Pattern Recognition · Computer Science 2022-09-22 Zhihao Li , Jianzhuang Liu , Zhensong Zhang , Songcen Xu , Youliang Yan

Video object segmentation, i.e., the separation of a target object from background in video, has made significant progress on real and challenging videos in recent years. To leverage this progress in 3D applications, this paper addresses…

Computer Vision and Pattern Recognition · Computer Science 2020-12-21 Brent A. Griffin , Jason J. Corso

The 6-Degree of Freedom (DoF) grasp method based on point clouds has shown significant potential in enabling robots to grasp target objects. However, most existing methods are based on the point clouds (2.5D points) generated from…

Robotics · Computer Science 2026-01-13 Yaofeng Cheng , Fusheng Zha , Wei Guo , Pengfei Wang , Chao Zeng , Lining Sun , Chenguang Yang

In this paper, we present new feature encoding methods for Detection of 3D objects in point clouds. We used a graph neural network (GNN) for Detection of 3D objects namely cars, pedestrians, and cyclists. Feature encoding is one of the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Md Afzal Ansari , Md Meraz , Pavan Chakraborty , Mohammed Javed

In this work we propose a new CNN+LSTM architecture for camera pose regression for indoor and outdoor scenes. CNNs allow us to learn suitable feature representations for localization that are robust against motion blur and illumination…

Computer Vision and Pattern Recognition · Computer Science 2017-08-22 Florian Walch , Caner Hazirbas , Laura Leal-Taixé , Torsten Sattler , Sebastian Hilsenbeck , Daniel Cremers

This paper addresses the problem of estimating the 3-DoF camera pose for a ground-level image with respect to a satellite image that encompasses the local surroundings. We propose a novel end-to-end approach that leverages the learning of…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Zhenbo Song , Xianghui Ze , Jianfeng Lu , Yujiao Shi

Successfully tracking the human body is an important perceptual challenge for robots that must work around people. Existing methods fall into two broad categories: geometric tracking and direct pose estimation using machine learning. While…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Weilin Wan , Aaron Walsman , Dieter Fox

In this paper, we study the problem of 3D object segmentation from raw point clouds. Unlike all existing methods which usually require a large amount of human annotations for full supervision, we propose the first unsupervised method,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Ziyang Song , Bo Yang

This paper addresses the problem of video object segmentation, where the initial object mask is given in the first frame of an input video. We propose a novel spatio-temporal Markov Random Field (MRF) model defined over pixels to handle…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Linchao Bao , Baoyuan Wu , Wei Liu

In this work we address the task of segmenting an object into its parts, or semantic part segmentation. We start by adapting a state-of-the-art semantic segmentation system to this task, and show that a combination of a fully-convolutional…

Computer Vision and Pattern Recognition · Computer Science 2015-11-25 S. Tsogkas , I. Kokkinos , G. Papandreou , A. Vedaldi

Coordinating the motion of robots with high degrees of freedom (DoF) to grasp objects gives rise to many challenges. In this paper, we propose a novel imitation learning approach to learn a policy that directly predicts 23 DoF grasp…

Robotics · Computer Science 2024-11-22 Martin Matak , Karl Van Wyk , Tucker Hermans

This paper proposes a computationally efficient approach to detecting objects natively in 3D point clouds using convolutional neural networks (CNNs). In particular, this is achieved by leveraging a feature-centric voting scheme to implement…

Robotics · Computer Science 2017-03-07 Martin Engelcke , Dushyant Rao , Dominic Zeng Wang , Chi Hay Tong , Ingmar Posner

Advances in deep learning recognition have led to accurate object detection with 2D images. However, these 2D perception methods are insufficient for complete 3D world information. Concurrently, advanced 3D shape estimation approaches focus…

Computer Vision and Pattern Recognition · Computer Science 2021-09-15 Taeyeop Lee , Byeong-Uk Lee , Myungchul Kim , In So Kweon

The detection of objects considering a 6DoF pose is a common requirement to build virtual and augmented reality applications. It is usually a complex task which requires real-time processing and high precision results for adequate user…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Heitor Felix , Walber M. Rodrigues , David Macêdo , Francisco Simões , Adriano L. I. Oliveira , Veronica Teichrieb , Cleber Zanchettin

In this paper we introduce a novel method for segmentation that can benefit from general semantics of Convolutional Neural Network (CNN). Our segmentation proposes visually and semantically coherent image segments. We use binary encoding of…

Computer Vision and Pattern Recognition · Computer Science 2016-11-22 Mahdyar Ravanbakhsh , Hossein Mousavi , Moin Nabi , Lucio Marcenaro , Carlo Regazzoni

In the task of Object Recognition, there exists a dichotomy between the categorization of objects and estimating object pose, where the former necessitates a view-invariant representation, while the latter requires a representation capable…

Computer Vision and Pattern Recognition · Computer Science 2016-04-20 Mohamed Elhoseiny , Tarek El-Gaaly , Amr Bakry , Ahmed Elgammal

Accurately tracking particles and determining their coordinate along the optical axis is a major challenge in optical microscopy, especially when extremely high precision is needed. In this study, we introduce a deep learning approach using…

Image and Video Processing · Electrical Eng. & Systems 2025-08-05 Andrey Alexandrov , Giovanni Acampora , Giovanni De Lellis , Antonia Di Crescenzo , Chiara Errico , Daria Morozova , Valeri Tioukov , Autilia Vittiello