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Recently, proposal-free instance segmentation has received increasing attention due to its concise and efficient pipeline. Generally, proposal-free methods generate instance-agnostic semantic segmentation labels and instance-aware features…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Naiyu Gao , Yanhu Shan , Yupei Wang , Xin Zhao , Yinan Yu , Ming Yang , Kaiqi Huang

We propose a new and, arguably, a very simple reduction of instance segmentation to semantic segmentation. This reduction allows to train feed-forward non-recurrent deep instance segmentation systems in an end-to-end fashion using…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Victor Kulikov , Victor Yurchenko , Victor Lempitsky

Quantitative measurement of crystals in high-resolution images allows for important insights into underlying material characteristics. Deep learning has shown great progress in vision-based automatic crystal size measurement, but current…

A fundamental limitation of object detectors is that they suffer from "spatial bias", and in particular perform less satisfactorily when detecting objects near image borders. For a long time, there has been a lack of effective ways to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Zhaohui Zheng , Yuming Chen , Qibin Hou , Xiang Li , Ping Wang , Ming-Ming Cheng

Object detection is a fundamental vision task. It has been highly researched in academia and has been widely adopted in industry. Average Precision (AP) is the standard score for evaluating object detectors. Our understanding of the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Ali Borji

We present Boundary IoU (Intersection-over-Union), a new segmentation evaluation measure focused on boundary quality. We perform an extensive analysis across different error types and object sizes and show that Boundary IoU is significantly…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Bowen Cheng , Ross Girshick , Piotr Dollár , Alexander C. Berg , Alexander Kirillov

We propose and study a task we name panoptic segmentation (PS). Panoptic segmentation unifies the typically distinct tasks of semantic segmentation (assign a class label to each pixel) and instance segmentation (detect and segment each…

Computer Vision and Pattern Recognition · Computer Science 2019-04-12 Alexander Kirillov , Kaiming He , Ross Girshick , Carsten Rother , Piotr Dollár

Conventional salient object detection models cannot differentiate the importance of different salient objects. Recently, two works have been proposed to detect saliency ranking by assigning different degrees of saliency to different…

Computer Vision and Pattern Recognition · Computer Science 2021-07-09 Nian Liu , Long Li , Wangbo Zhao , Junwei Han , Ling Shao

In this short note, we establish, for the first time, the convergence rate of SOAP, an efficient and popular matrix-based optimizer for training deep neural networks. Our analysis extends to a more general variant of SOAP that admits…

Optimization and Control · Mathematics 2026-04-28 Huan Li , Zhouchen Lin

Weakly-supervised semantic segmentation (WSSS) performs pixel-wise classification given only image-level labels for training. Despite the difficulty of this task, the research community has achieved promising results over the last five…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Cheolhyun Mun , Sanghuk Lee , Youngjung Uh , Junsuk Choe , Hyeran Byun

We present a new certification method for image and point cloud segmentation based on randomized smoothing. The method leverages a novel scalable algorithm for prediction and certification that correctly accounts for multiple testing,…

Machine Learning · Computer Science 2022-07-28 Marc Fischer , Maximilian Baader , Martin Vechev

We present a high-performance method that can achieve mask-level instance segmentation with only bounding-box annotations for training. While this setting has been studied in the literature, here we show significantly stronger performance…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Zhi Tian , Chunhua Shen , Xinlong Wang , Hao Chen

We present two practical improvement techniques for unsupervised segmentation learning. These techniques address limitations in the resolution and accuracy of predicted segmentation maps of recent state-of-the-art methods. Firstly, we…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Alp Eren Sari , Francesco Locatello , Paolo Favaro

Semantic segmentation consists of predicting a semantic label for each image pixel. While existing deep learning approaches achieve high accuracy, they often overlook the ordinal relationships between classes, which can provide critical…

Computer Vision and Pattern Recognition · Computer Science 2025-02-06 Ricardo P. M. Cruz , Rafael Cristino , Jaime S. Cardoso

Time series anomaly detection has achieved remarkable progress in recent years. However, evaluation practices have received comparatively less attention, despite their critical importance. Existing metrics exhibit several limitations: (1)…

Machine Learning · Computer Science 2026-03-09 Yuewei Li , Dalin Zhang , Huan Li , Xinyi Gong , Hongjun Chu , Zhaohui Song

Recently, detection of label errors and improvement of label quality in datasets for supervised learning tasks has become an increasingly important goal in both research and industry. The consequences of incorrectly annotated data include…

Machine Learning · Computer Science 2025-08-26 Sarina Penquitt , Tobias Riedlinger , Timo Heller , Markus Reischl , Matthias Rottmann

Existing supervised action segmentation methods depend on the quality of frame-wise classification using attention mechanisms or temporal convolutions to capture temporal dependencies. Even boundary detection-based methods primarily depend…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Kamel Aouaidjia , Wenhao Zhang , Aofan Li , Chongsheng Zhang

The goal of this paper is to discover, segment, and track independently moving objects in complex visual scenes. Previous approaches have explored the use of optical flow for motion segmentation, leading to imperfect predictions due to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Junyu Xie , Weidi Xie , Andrew Zisserman

Extracting small objects from remote sensing imagery plays a vital role in various applications, including urban planning, environmental monitoring, and disaster management. While current research primarily focuses on small object…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Chenhao Wang , Yingrui Ji , Yu Meng , Yunjian Zhang , Yao Zhu

We propose a new method for semantic instance segmentation, by first computing how likely two pixels are to belong to the same object, and then by grouping similar pixels together. Our similarity metric is based on a deep, fully…

Computer Vision and Pattern Recognition · Computer Science 2017-03-31 Alireza Fathi , Zbigniew Wojna , Vivek Rathod , Peng Wang , Hyun Oh Song , Sergio Guadarrama , Kevin P. Murphy