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Video Recognition has drawn great research interest and great progress has been made. A suitable frame sampling strategy can improve the accuracy and efficiency of recognition. However, mainstream solutions generally adopt hand-crafted…

Computer Vision and Pattern Recognition · Computer Science 2019-08-05 Wenhao Wu , Dongliang He , Xiao Tan , Shifeng Chen , Shilei Wen

A treap is a classic randomized binary search tree data structure that is easy to implement and supports O(\log n) expected time access. However, classic treaps do not take advantage of the input distribution or patterns in the input. Given…

Data Structures and Algorithms · Computer Science 2022-06-27 Honghao Lin , Tian Luo , David P. Woodruff

Accurate and real-time surgical instrument segmentation is important in the endoscopic vision of robot-assisted surgery, and significant challenges are posed by frequent instrument-tissue contacts and continuous change of observation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Fangbo Qin , Shan Lin , Yangming Li , Randall A. Bly , Kris S. Moe , Blake Hannaford

In this paper, we aim to tackle the task of semi-supervised video object segmentation across a sequence of frames where only the ground-truth segmentation of the first frame is provided. The challenges lie in how to online update the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-30 Mingjie Sun , Jimin Xiao , Eng Gee Lim , Yanchu Xie , Jiashi Feng

Gestures are integral components of face-to-face communication. They unfold over time, often following predictable movement phases of preparation, stroke, and retraction. Yet, the prevalent approach to automatic gesture detection treats the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Esam Ghaleb , Ilya Burenko , Marlou Rasenberg , Wim Pouw , Peter Uhrig , Judith Holler , Ivan Toni , Aslı Özyürek , Raquel Fernández

This paper considers the problem of active object recognition using touch only. The focus is on adaptively selecting a sequence of wrist poses that achieves accurate recognition by enclosure grasps. It seeks to minimize the number of…

Robotics · Computer Science 2017-08-01 Mabel M. Zhang , Nikolay Atanasov , Kostas Daniilidis

To be effective in unstructured and changing environments, robots must learn to recognize new objects. Deep learning has enabled rapid progress for object detection and segmentation in computer vision; however, this progress comes at the…

Robotics · Computer Science 2020-03-05 Victoria Florence , Jason J. Corso , Brent Griffin

Autonomous robotic surgery requires deliberation, i.e. the ability to plan and execute a task adapting to uncertain and dynamic environments. Uncertainty in the surgical domain is mainly related to the partial pre-operative knowledge about…

Robotics · Computer Science 2022-07-25 Eleonora Tagliabue , Daniele Meli , Diego Dall'Alba , Paolo Fiorini

Open, or non-laparoscopic surgery, represents the vast majority of all operating room procedures, but few tools exist to objectively evaluate these techniques at scale. Current efforts involve human expert-based visual assessment. We…

Computer Vision and Pattern Recognition · Computer Science 2020-12-15 Michael Zhang , Xiaotian Cheng , Daniel Copeland , Arjun Desai , Melody Y. Guan , Gabriel A. Brat , Serena Yeung

Human action recognition is a crucial task for intelligent robotics, particularly within the context of human-robot collaboration research. In self-supervised skeleton-based action recognition, the mask-based reconstruction paradigm learns…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Wei Wei , Shaojie Zhang , Yonghao Dang , Jianqin Yin

We propose a two-stage convolutional neural network (CNN) architecture for robust recognition of hand gestures, called HGR-Net, where the first stage performs accurate semantic segmentation to determine hand regions, and the second stage…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Amirhossein Dadashzadeh , Alireza Tavakoli Targhi , Maryam Tahmasbi , Majid Mirmehdi

Human speech is often accompanied by body gestures including arm and hand gestures. We present a method that reenacts a high-quality video with gestures matching a target speech audio. The key idea of our method is to split and re-assemble…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Yang Zhou , Jimei Yang , Dingzeyu Li , Jun Saito , Deepali Aneja , Evangelos Kalogerakis

This paper offers a new authentication algorithm based on image matching of nano-resolution visual identifiers with tree-shaped patterns. The algorithm includes image-to-tree conversion by greedy extraction of the fractal pattern skeleton…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Hao Wang , Xiwen Chen , Abolfazl Razi , Rahul Amin

In this paper we explore how machine learning techniques can be applied to the discovery of efficient mathematical identities. We introduce an attribute grammar framework for representing symbolic expressions. Given a set of grammar rules…

Machine Learning · Computer Science 2014-11-07 Wojciech Zaremba , Karol Kurach , Rob Fergus

Robust and persistent localisation is essential for ensuring the safe operation of autonomous vehicles. When operating in large and diverse urban driving environments, autonomous vehicles are frequently exposed to situations that violate…

Robotics · Computer Science 2021-03-29 Siqi Yi , Stewart Worrall , Eduardo Nebot

Object segmentation is a key component in the visual system of a robot that performs tasks like grasping and object manipulation, especially in presence of occlusions. Like many other computer vision tasks, the adoption of deep…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Federico Ceola , Elisa Maiettini , Giulia Pasquale , Lorenzo Rosasco , Lorenzo Natale

In the field of computer- and robot-assisted minimally invasive surgery, enormous progress has been made in recent years based on the recognition of surgical instruments in endoscopic images and videos. In particular, the determination of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Tobias Rueckert , Daniel Rueckert , Christoph Palm

Intelligent vision control systems for surgical robots should adapt to unknown and diverse objects while being robust to system disturbances. Previous methods did not meet these requirements due to mainly relying on pose estimation and…

Robotics · Computer Science 2024-05-29 Hongbin Lin , Bin Li , Chun Wai Wong , Juan Rojas , Xiangyu Chu , Kwok Wai Samuel Au

Modern pattern recognition tasks use complex algorithms that take advantage of large datasets to make more accurate predictions than traditional algorithms such as decision trees or k-nearest-neighbor better suited to describe simple…

Machine Learning · Statistics 2021-10-14 AGaurav Arwade , Sigurdur Olafsson

For real-time semantic video segmentation, most recent works utilised a dynamic framework with a key scheduler to make online key/non-key decisions. Some works used a fixed key scheduling policy, while others proposed adaptive key…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 Yujiang Wang , Mingzhi Dong , Jie Shen , Yang Wu , Shiyang Cheng , Maja Pantic