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This paper studies the problem of multi-person pose estimation in a bottom-up fashion. With a new and strong observation that the localization issue of the center-offset formulation can be remedied in a local-window search scheme in an…

Computer Vision and Pattern Recognition · Computer Science 2022-03-03 Nan Xue , Tianfu Wu , Gui-Song Xia , Liangpei Zhang

Many ways of annotating a dataset for machine learning classification tasks that go beyond the usual class labels exist in practice. These are of interest as they can simplify or facilitate the collection of annotations, while not greatly…

Unsupervised person search aims to localize a particular target person from a gallery set of scene images without annotations, which is extremely challenging due to the unexpected variations of the unlabeled domains. However, most existing…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Tianxiang Cui , Huibing Wang , Jinjia Peng , Ruoxi Deng , Xianping Fu , Yang Wang

Most existing crowd counting methods require object location-level annotation, i.e., placing a dot at the center of an object. While being simpler than the bounding-box or pixel-level annotation, obtaining this annotation is still…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Yinjie Lei , Yan Liu , Pingping Zhang , Lingqiao Liu

Monocular 3D object detection is an essential task in computer vision, and it has several applications in robotics and virtual reality. However, 3D object detectors are typically trained in a fully supervised way, relying extensively on 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Andreas Lau Hansen , Lukas Wanzeck , Dim P. Papadopoulos

Manual annotation of bounding boxes for object detection in digital images is tedious, and time and resource consuming. In this paper, we propose a semi-automatic method for efficient bounding box annotation. The method trains the object…

Machine Learning · Computer Science 2020-07-03 Bishwo Adhikari , Heikki Huttunen

Visual appearance-based person retrieval is a challenging problem in surveillance. It uses attributes like height, cloth color, cloth type and gender to describe a human. Such attributes are known as soft biometrics. This paper proposes…

Computer Vision and Pattern Recognition · Computer Science 2019-11-01 Hiren Galiyawala , Mehul S Raval , Shivansh Dave

Existing Camouflaged Object Detection (COD) methods rely heavily on large-scale pixel-annotated training sets, which are both time-consuming and labor-intensive. Although weakly supervised methods offer higher annotation efficiency, their…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Jin Zhang , Ruiheng Zhang , Yanjiao Shi , Zhe Cao , Nian Liu , Fahad Shahbaz Khan

For human pose estimation in still images, this paper proposes three semi- and weakly-supervised learning schemes. While recent advances of convolutional neural networks improve human pose estimation using supervised training data, our…

Computer Vision and Pattern Recognition · Computer Science 2019-06-05 Norimichi Ukita , Yusuke Uematsu

Due to the few annotated labels of 3D point clouds, how to learn discriminative features of point clouds to segment object instances is a challenging problem. In this paper, we propose a simple yet effective 3D instance segmentation…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Linghua Tang , Le Hui , Jin Xie

Despite recent attempts for solving the person re-identification problem, it remains a challenging task since a person's appearance can vary significantly when large variations in view angle, human pose, and illumination are involved. In…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Alireza Rahimpour , Liu Liu , Ali Taalimi , Yang Song , Hairong Qi

Person re-identification (re-ID) requires one to match images of the same person across camera views. As a more challenging task, semi-supervised re-ID tackles the problem that only a number of identities in training data are fully labeled,…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Chih-Ting Liu , Yu-Jhe Li , Shao-Yi Chien , Yu-Chiang Frank Wang

Existing alignment-based methods have to employ the pretrained human parsing models to achieve the pixel-level alignment, and cannot identify the personal belongings (e.g., backpacks and reticule) which are crucial to person re-ID. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Kuan Zhu , Haiyun Guo , Zhiwei Liu , Ming Tang , Jinqiao Wang

Weakly supervised point cloud semantic segmentation methods that require 1\% or fewer labels, hoping to realize almost the same performance as fully supervised approaches, which recently, have attracted extensive research attention. A…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Tianfang Sun , Zhizhong Zhang , Xin Tan , Yanyun Qu , Yuan Xie , Lizhuang Ma

Domain adaptation in person re-identification (re-ID) has always been a challenging task. In this work, we explore how to harness the natural similar characteristics existing in the samples from the target domain for learning to conduct…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Yang Fu , Yunchao Wei , Guanshuo Wang , Yuqian Zhou , Honghui Shi , Thomas Huang

Weakly supervised object detection (WSOD) aims at learning precise object detectors with only image-level tags. In spite of intensive research on deep learning (DL) approaches over the past few years, there is still a significant…

Computer Vision and Pattern Recognition · Computer Science 2023-05-08 Qi Lai , ChiMan Vong

3D object detection is an indispensable component for scene understanding. However, the annotation of large-scale 3D datasets requires significant human effort. To tackle this problem, many methods adopt weakly supervised 3D object…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Guowen Zhang , Junsong Fan , Liyi Chen , Zhaoxiang Zhang , Zhen Lei , Lei Zhang

Object detection is an import task of computer vision.A variety of methods have been proposed,but methods using the weak labels still do not have a satisfactory result.In this paper,we propose a new framework that using the weakly…

Computer Vision and Pattern Recognition · Computer Science 2016-07-19 Ke Yang , Dongsheng Li , Yong Dou , Shaohe Lv , Qiang Wang

Recent advances in data-centric artificial intelligence highlight inherent limitations in object recognition datasets. One of the primary issues stems from the semantic gap problem, which results in complex many-to-many mappings between…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Xiaolei Diao , Fausto Giunchiglia

Weakly-supervised object detection attempts to limit the amount of supervision by dispensing the need for bounding boxes, but still assumes image-level labels on the entire training set. In this work, we study the problem of training an…

Computer Vision and Pattern Recognition · Computer Science 2021-07-22 Zhaohui Yang , Miaojing Shi , Chao Xu , Vittorio Ferrari , Yannis Avrithis
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