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In recent years, many semantic segmentation methods have been proposed to predict label of pixels in the scene. In general, we measure area prediction errors or boundary prediction errors for comparing methods. However, there is no…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Yeong-Jun Cho

As scene segmentation systems reach visually accurate results, many recent papers focus on making these network architectures faster, smaller and more efficient. In particular, studies often aim at designingreal-time'systems. Achieving this…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Evann Courdier , Francois Fleuret

Although instance segmentation has made considerable advancement over recent years, it's still a challenge to design high accuracy algorithms with real-time performance. In this paper, we propose a real-time instance segmentation framework…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Wentao Du , Zhiyu Xiang , Shuya Chen , Chengyu Qiao , Yiman Chen , Tingming Bai

In 2D/3D object detection task, Intersection-over-Union (IoU) has been widely employed as an evaluation metric to evaluate the performance of different detectors in the testing stage. However, during the training stage, the common distance…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Dingfu Zhou , Jin Fang , Xibin Song , Chenye Guan , Junbo Yin , Yuchao Dai , Ruigang Yang

Multi-object tracking (MOT) methods often rely on Intersection-over-Union (IoU) for association. However, this becomes unreliable when objects are similar or occluded. Also, computing IoU for segmentation masks is computationally expensive.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Milad Khanchi , Maria Amer , Charalambos Poullis

Most existing point cloud based 3D object detectors focus on the tasks of classification and box regression. However, another bottleneck in this area is achieving an accurate detection confidence for the Non-Maximum Suppression (NMS)…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Jiale Li , Shujie Luo , Ziqi Zhu , Hang Dai , Andrey S. Krylov , Yong Ding , Ling Shao

The Jaccard index, also known as Intersection-over-Union (IoU), is one of the most critical evaluation metrics in image semantic segmentation. However, direct optimization of IoU score is very difficult because the learning objective is…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Litao Yu , Zhibin Li , Min Xu , Yongsheng Gao , Jiebo Luo , Jian Zhang

This paper presents Ego-Centric Intersection-over-Union (EC-IoU), addressing the limitation of the standard IoU measure in characterizing safety-related performance for object detectors in navigating contexts. Concretely, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Brian Hsuan-Cheng Liao , Chih-Hong Cheng , Hasan Esen , Alois Knoll

In Few-Shot Object Detection (FSOD), detecting small objects is extremely difficult. The limited supervision cripples the localization capabilities of the models and a few pixels shift can dramatically reduce the Intersection over Union…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Pierre Le Jeune , Anissa Mokraoui

Object detection, instance segmentation, and pose estimation are popular visual recognition tasks which require localizing the object by internal or boundary landmarks. This paper summarizes these tasks as location-sensitive visual…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Kaiwen Duan , Lingxi Xie , Honggang Qi , Song Bai , Qingming Huang , Qi Tian

Since Intersection-over-Union (IoU) based optimization maintains the consistency of the final IoU prediction metric and losses, it has been widely used in both regression and classification branches of single-stage 2D object detectors.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-21 Hualian Sheng , Sijia Cai , Na Zhao , Bing Deng , Jianqiang Huang , Xian-Sheng Hua , Min-Jian Zhao , Gim Hee Lee

Image-based tracking of laparoscopic instruments plays a fundamental role in computer and robotic-assisted surgeries by aiding surgeons and increasing patient safety. Computer vision contests, such as the Robust Medical Instrument…

Computer Vision and Pattern Recognition · Computer Science 2022-01-21 Juan Carlos Angeles Ceron , Leonardo Chang , Gilberto Ochoa-Ruiz , Sharib Ali

Multi-class multi-instance segmentation is the task of identifying masks for multiple object classes and multiple instances of the same class within an image. The foundational Segment Anything Model (SAM) is designed for promptable…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Mariia Khan , Yue Qiu , Yuren Cong , Jumana Abu-Khalaf , David Suter , Bodo Rosenhahn

Letting a deep network be aware of the quality of its own predictions is an interesting yet important problem. In the task of instance segmentation, the confidence of instance classification is used as mask quality score in most instance…

Computer Vision and Pattern Recognition · Computer Science 2019-03-04 Zhaojin Huang , Lichao Huang , Yongchao Gong , Chang Huang , Xinggang Wang

Semantic segmentation datasets often exhibit two types of imbalance: \textit{class imbalance}, where some classes appear more frequently than others and \textit{size imbalance}, where some objects occupy more pixels than others. This causes…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Zifu Wang , Maxim Berman , Amal Rannen-Triki , Philip H. S. Torr , Devis Tuia , Tinne Tuytelaars , Luc Van Gool , Jiaqian Yu , Matthew B. Blaschko

While formal robustness verification has seen significant success in image classification, scaling these guarantees to object detection remains notoriously difficult due to complex non-linear coordinate transformations and…

Machine Learning · Computer Science 2026-03-06 Benedikt Brückner , Alejandro J. Mercado , Yanghao Zhang , Panagiotis Kouvaros , Alessio Lomuscio

Open-set image segmentation poses a significant challenge because existing methods often demand extensive training or fine-tuning and generally struggle to segment unified objects consistently across diverse text reference expressions.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Zhihua Liu , Amrutha Saseendran , Lei Tong , Xilin He , Fariba Yousefi , Nikolay Burlutskiy , Dino Oglic , Tom Diethe , Philip Teare , Huiyu Zhou , Chen Jin

Instance segmentation is an advanced form of image segmentation which, beyond traditional segmentation, requires identifying individual instances of repeating objects in a scene. Mask R-CNN is the most common architecture for instance…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Jawad Haidar , Marc Mouawad , Imad Elhajj , Daniel Asmar

Instance segmentation has gained recently huge attention in various computer vision applications. It aims at providing different IDs to different object of the scene, even if they belong to the same class. This is useful in various…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Eslam Mohamed , Abdelrahman Shaker , Ahmad El-Sallab , Mayada Hadhoud

This paper presents an end-to-end instance segmentation framework, termed SOIT, that Segments Objects with Instance-aware Transformers. Inspired by DETR \cite{carion2020end}, our method views instance segmentation as a direct set prediction…

Computer Vision and Pattern Recognition · Computer Science 2021-12-24 Xiaodong Yu , Dahu Shi , Xing Wei , Ye Ren , Tingqun Ye , Wenming Tan