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We propose an end-to-end approach to the natural language object retrieval task, which localizes an object within an image according to a natural language description, i.e., referring expression. Previous works divide this problem into two…

Computer Vision and Pattern Recognition · Computer Science 2017-03-23 Fan Wu , Zhongwen Xu , Yi Yang

Person search aims at localizing and identifying a query person from a gallery of uncropped scene images. Different from person re-identification (re-ID), its performance also depends on the localization accuracy of a pedestrian detector.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-19 Chuchu Han , Jiacheng Ye , Yunshan Zhong , Xin Tan , Chi Zhang , Changxin Gao , Nong Sang

When encountering novel objects, humans are able to infer a wide range of physical properties such as mass, friction and deformability by interacting with them in a goal driven way. This process of active interaction is in the same spirit…

Machine Learning · Statistics 2017-08-21 Misha Denil , Pulkit Agrawal , Tejas D Kulkarni , Tom Erez , Peter Battaglia , Nando de Freitas

In this work, we consider the problem of searching people in an unconstrained environment, with natural language descriptions. Specifically, we study how to systematically design an algorithm to effectively acquire descriptions from humans.…

Robotics · Computer Science 2020-02-21 Vikram Shree , Wei-Lun Chao , Mark Campbell

Reinforcement Learning is an area of Machine Learning focused on how agents can be trained to make sequential decisions, and achieve a particular goal within an arbitrary environment. While learning, they repeatedly take actions based on…

We present an active detection model for localizing objects in scenes. The model is class-specific and allows an agent to focus attention on candidate regions for identifying the correct location of a target object. This agent learns to…

Computer Vision and Pattern Recognition · Computer Science 2015-11-20 Juan C. Caicedo , Svetlana Lazebnik

In this work we apply deep reinforcement learning to the problems of navigating a three-dimensional environment and inferring the locations of human speaker audio sources within, in the case where the only available information is the raw…

Sound · Computer Science 2021-11-30 Petros Giannakopoulos , Aggelos Pikrakis , Yannis Cotronis

Following the recent progress in image classification and captioning using deep learning, we develop a novel natural language person retrieval system based on an attention mechanism. More specifically, given the description of a person, the…

Computer Vision and Pattern Recognition · Computer Science 2017-05-26 Tao Zhou , Muhao Chen , Jie Yu , Demetri Terzopoulos

Person re-identification is an important task that requires learning discriminative visual features for distinguishing different person identities. Diverse auxiliary information has been utilized to improve the visual feature learning. In…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Dapeng Chen , Hongsheng Li , Xihui Liu , Yantao Shen , Zejian Yuan , Xiaogang Wang

Searching persons in large-scale image databases with the query of natural language description has important applications in video surveillance. Existing methods mainly focused on searching persons with image-based or attribute-based…

Computer Vision and Pattern Recognition · Computer Science 2017-03-31 Shuang Li , Tong Xiao , Hongsheng Li , Bolei Zhou , Dayu Yue , Xiaogang Wang

In this work we use deep reinforcement learning to create an autonomous agent that can navigate in a two-dimensional space using only raw auditory sensory information from the environment, a problem that has received very little attention…

Sound · Computer Science 2021-05-17 Petros Giannakopoulos , Aggelos Pikrakis , Yannis Cotronis

Recent developments in deep reinforcement learning have enabled the creation of agents for solving a large variety of games given a visual input. These methods have been proven successful for 2D games, like the Atari games, or for simple…

Machine Learning · Computer Science 2018-07-06 Georgios Papoudakis , Kyriakos C. Chatzidimitriou , Pericles A. Mitkas

Deep reinforcement learning (DRL) has proven to be an effective tool for creating general video-game AI. However most current DRL video-game agents learn end-to-end from the video-output of the game, which is superfluous for many…

Machine Learning · Computer Science 2018-05-29 William Woof , Ke Chen

Traditionally, an object detector is applied to every part of the scene of interest, and its accuracy and computational cost increases with higher resolution images. However, in some application domains such as remote sensing, purchasing…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Burak Uzkent , Christopher Yeh , Stefano Ermon

We present a reinforcement learning approach for detecting objects within an image. Our approach performs a step-wise deformation of a bounding box with the goal of tightly framing the object. It uses a hierarchical tree-like representation…

Computer Vision and Pattern Recognition · Computer Science 2018-10-29 Jonas Koenig , Simon Malberg , Martin Martens , Sebastian Niehaus , Artus Krohn-Grimberghe , Arunselvan Ramaswamy

Recent work has described neural-network-based agents that are trained with reinforcement learning (RL) to execute language-like commands in simulated worlds, as a step towards an intelligent agent or robot that can be instructed by human…

Computation and Language · Computer Science 2020-05-20 Felix Hill , Sona Mokra , Nathaniel Wong , Tim Harley

Deep reinforcement learning has become popular over recent years, showing superiority on different visual-input tasks such as playing Atari games and robot navigation. Although objects are important image elements, few work considers…

Machine Learning · Computer Science 2018-09-18 Yuezhang Li , Katia Sycara , Rahul Iyer

Effective decision making involves flexibly relating past experiences and relevant contextual information to a novel situation. In deep reinforcement learning (RL), the dominant paradigm is for an agent to amortise information that helps…

Machine Learning · Computer Science 2022-12-20 Peter C. Humphreys , Arthur Guez , Olivier Tieleman , Laurent Sifre , Théophane Weber , Timothy Lillicrap

General game testing relies on the use of human play testers, play test scripting, and prior knowledge of areas of interest to produce relevant test data. Using deep reinforcement learning (DRL), we introduce a self-learning mechanism to…

Machine Learning · Computer Science 2021-03-31 Joakim Bergdahl , Camilo Gordillo , Konrad Tollmar , Linus Gisslén

In this paper we introduce a fully end-to-end approach for visual tracking in videos that learns to predict the bounding box locations of a target object at every frame. An important insight is that the tracking problem can be considered as…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Da Zhang , Hamid Maei , Xin Wang , Yuan-Fang Wang
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