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This work introduces a new proposal-free instance segmentation method that builds on single-instance segmentation masks predicted across the entire image in a sliding window style. In contrast to related approaches, our method concurrently…

计算机视觉与模式识别 · 计算机科学 2020-09-11 Alberto Bailoni , Constantin Pape , Steffen Wolf , Anna Kreshuk , Fred A. Hamprecht

Instance segmentation is an important computer vision problem which remains challenging despite impressive recent advances due to deep learning-based methods. Given sufficient training data, fully supervised methods can yield excellent…

计算机视觉与模式识别 · 计算机科学 2023-03-22 Paul Hilt , Maedeh Zarvandi , Edgar Kaziakhmedov , Sourabh Bhide , Maria Leptin , Constantin Pape , Anna Kreshuk

Image recognition has recently witnessed a paradigm shift, where vision-language models are now used to perform few-shot classification based on textual prompts. Among these, the CLIP model has shown remarkable capabilities for zero-shot…

计算机视觉与模式识别 · 计算机科学 2023-07-27 Lorenzo Agnolucci , Alberto Baldrati , Francesco Todino , Federico Becattini , Marco Bertini , Alberto Del Bimbo

Based on multiple instance detection networks (MIDN), plenty of works have contributed tremendous efforts to weakly supervised object detection (WSOD). However, most methods neglect the fact that the overwhelming negative instances exist in…

计算机视觉与模式识别 · 计算机科学 2022-06-22 M. Chen , Y. Tian , Z. Li , E. Li , Z. Liang

Self-supervised instance discrimination is an effective contrastive pretext task to learn feature representations and address limited medical image annotations. The idea is to make features of transformed versions of the same images similar…

计算机视觉与模式识别 · 计算机科学 2022-11-17 Yejia Zhang , Xinrong Hu , Nishchal Sapkota , Yiyu Shi , Danny Z. Chen

Understanding 3D object shapes necessitates shape representation by object parts abstracted from results of instance and semantic segmentation. Promising shape representations enable computers to interpret a shape with meaningful parts and…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Jiaxin Li , Hongxing Wang , Jiawei Tan , Zhilong Ou , Junsong Yuan

Tracking segmentation masks of multiple instances has been intensively studied, but still faces two fundamental challenges: 1) the requirement of large-scale, frame-wise annotation, and 2) the complexity of two-stage approaches. To resolve…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Yang Fu , Sifei Liu , Umar Iqbal , Shalini De Mello , Humphrey Shi , Jan Kautz

Existing machine learning models demonstrate excellent performance in image object recognition after training on a large-scale dataset under full supervision. However, these models only learn to map an image to a predefined class index,…

计算机视觉与模式识别 · 计算机科学 2024-07-30 Kai Han , Xiaohu Huang , Yandong Li , Sagar Vaze , Jie Li , Xuhui Jia

Various multi-instance learning (MIL) based approaches have been developed and successfully applied to whole-slide pathological images (WSI). Existing MIL methods emphasize the importance of feature aggregators, but largely neglect the…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Yicheng Song , Tiancheng Lin , Die Peng , Su Yang , Yi Xu

Unsupervised person re-identification (ReID) aims at learning discriminative identity features without annotations. Recently, self-supervised contrastive learning has gained increasing attention for its effectiveness in unsupervised…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Hao Chen , Benoit Lagadec , Francois Bremond

Multi-instance learning attempts to learn from a training set consisting of labeled bags each containing many unlabeled instances. Previous studies typically treat the instances in the bags as independently and identically distributed.…

机器学习 · 计算机科学 2009-05-13 Zhi-Hua Zhou , Yu-Yin Sun , Yu-Feng Li

This paper presents Prototypical Contrastive Learning (PCL), an unsupervised representation learning method that addresses the fundamental limitations of instance-wise contrastive learning. PCL not only learns low-level features for the…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Junnan Li , Pan Zhou , Caiming Xiong , Steven C. H. Hoi

Weakly supervised learning has emerged as a compelling tool for object detection by reducing the need for strong supervision during training. However, major challenges remain: (1) differentiation of object instances can be ambiguous; (2)…

计算机视觉与模式识别 · 计算机科学 2020-10-22 Zhongzheng Ren , Zhiding Yu , Xiaodong Yang , Ming-Yu Liu , Yong Jae Lee , Alexander G. Schwing , Jan Kautz

A variable screening procedure via correlation learning was proposed Fan and Lv (2008) to reduce dimensionality in sparse ultra-high dimensional models. Even when the true model is linear, the marginal regression can be highly nonlinear. To…

统计方法学 · 统计学 2011-01-19 Jianqing Fan , Yang Feng , Rui Song

Multi-instance learning (MIL) deals with objects represented as bags of instances and can predict instance labels from bag-level supervision. However, significant performance gaps exist between instance-level MIL algorithms and supervised…

机器学习 · 计算机科学 2022-10-06 Weijia Zhang , Xuanhui Zhang , Han-Wen Deng , Min-Ling Zhang

Semantic instance segmentation remains a challenging task. In this work we propose to tackle the problem with a discriminative loss function, operating at the pixel level, that encourages a convolutional network to produce a representation…

计算机视觉与模式识别 · 计算机科学 2017-08-10 Bert De Brabandere , Davy Neven , Luc Van Gool

The exemplar-free class incremental learning requires classification models to learn new class knowledge incrementally without retaining any old samples. Recently, the framework based on parallel one-class classifiers (POC), which trains a…

机器学习 · 计算机科学 2025-01-28 Wenju Sun , Qingyong Li , Jing Zhang , Danyu Wang , Wen Wang , Yangli-ao Geng

Particle Image Velocimetry (PIV) is a classical flow estimation problem which is widely considered and utilised, especially as a diagnostic tool in experimental fluid dynamics and the remote sensing of environmental flows. Recently, the…

计算机视觉与模式识别 · 计算机科学 2020-07-30 Mingrui Zhang , Matthew D. Piggott

Speaker verification system trained on one domain usually suffers performance degradation when applied to another domain. To address this challenge, researchers commonly use feature distribution matching-based methods in unsupervised domain…

音频与语音处理 · 电气工程与系统科学 2024-10-23 Wen Huang , Bing Han , Zhengyang Chen , Shuai Wang , Yanmin Qian

Positive instance detection, especially for these in positive bags (true positive instances, TPIs), plays a key role for multiple instance learning (MIL) arising from a specific classification problem only provided with bag (a set of…

计算机视觉与模式识别 · 计算机科学 2016-12-13 Dongkuan Xu , Jia Wu , Wei Zhang , Yingjie Tian