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Object counting is pivotal for understanding the composition of scenes. Previously, this task was dominated by class-specific methods, which have gradually evolved into more adaptable class-agnostic strategies. However, these strategies…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Anindya Mondal , Sauradip Nag , Xiatian Zhu , Anjan Dutta

We present ObjectBox, a novel single-stage anchor-free and highly generalizable object detection approach. As opposed to both existing anchor-based and anchor-free detectors, which are more biased toward specific object scales in their…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Mohsen Zand , Ali Etemad , Michael Greenspan

Despite the substantial progress of active learning for image recognition, there still lacks an instance-level active learning method specified for object detection. In this paper, we propose Multiple Instance Active Object Detection…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Tianning Yuan , Fang Wan , Mengying Fu , Jianzhuang Liu , Songcen Xu , Xiangyang Ji , Qixiang Ye

Open-Set Object Detection (OSOD) has emerged as a contemporary research direction to address the detection of unknown objects. Recently, few works have achieved remarkable performance in the OSOD task by employing contrastive clustering to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Hiran Sarkar , Vishal Chudasama , Naoyuki Onoe , Pankaj Wasnik , Vineeth N Balasubramanian

Object counting aims to estimate the number of objects in images. The leading counting approaches focus on the single category counting task and achieve impressive performance. Note that there are multiple categories of objects in real…

Computer Vision and Pattern Recognition · Computer Science 2021-09-01 Wei Xu , Dingkang Liang , Yixiao Zheng , Zhanyu Ma

Developing data-efficient instance detection models that can handle rare object categories remains a key challenge in computer vision. However, existing research often overlooks data collection strategies and evaluation metrics tailored to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Boyang Deng , Meiyan Lin , Shoulun Long

We consider the problem of retrieving objects from image data and learning to classify them into meaningful semantic categories with minimal supervision. To that end, we propose a fully differentiable unsupervised deep clustering approach…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Steven Hickson , Anelia Angelova , Irfan Essa , Rahul Sukthankar

While recent supervised methods for reference-based object counting continue to improve the performance on benchmark datasets, they have to rely on small datasets due to the cost associated with manually annotating dozens of objects in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-01 Lukas Knobel , Tengda Han , Yuki M. Asano

Conventional unsupervised anomaly detection (UAD) methods build separate models for each object category. Recent studies have proposed to train a unified model for multiple classes, namely model-unified UAD. However, such methods still…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Jia Guo , Haonan Han , Shuai Lu , Weihang Zhang , Huiqi Li

The Segment-Anything Model (SAM) is a vision foundation model for segmentation with a prompt-driven framework. SAM generates class-agnostic masks based on user-specified instance-referring prompts. However, adapting SAM for automated…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Hussni Mohd Zakir , Eric Tatt Wei Ho

Image captioning models have lately shown impressive results when applied to standard datasets. Switching to real-life scenarios, however, constitutes a challenge due to the larger variety of visual concepts which are not covered in…

Computer Vision and Pattern Recognition · Computer Science 2021-06-04 Marco Cagrandi , Marcella Cornia , Matteo Stefanini , Lorenzo Baraldi , Rita Cucchiara

Class activation mapping~(CAM), a visualization technique for interpreting deep learning models, is now commonly used for weakly supervised semantic segmentation~(WSSS) and object localization~(WSOL). It is the weighted aggregation of the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Jiatai Lin , Guoqiang Han , Xuemiao Xu , Changhong Liang , Tien-Tsin Wong , C. L. Philip Chen , Zaiyi Liu , Chu Han

Instance segmentation has attracted recent attention in computer vision and existing methods in this domain mostly have an object detection stage. In this paper, we study the intrinsic challenge of the instance segmentation problem, the…

Computer Vision and Pattern Recognition · Computer Science 2016-11-30 Long Jin , Zeyu Chen , Zhuowen Tu

The performance of image segmentation models has historically been constrained by the high cost of collecting large-scale annotated data. The Segment Anything Model (SAM) alleviates this original problem through a promptable,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Miguel Espinosa , Chenhongyi Yang , Linus Ericsson , Steven McDonagh , Elliot J. Crowley

Deep learning has revolutionized object detection thanks to large-scale datasets, but their object categories are still arguably very limited. In this paper, we attempt to enrich such categories by addressing the one-shot object detection…

Computer Vision and Pattern Recognition · Computer Science 2020-05-11 Xiang Li , Lin Zhang , Yau Pun Chen , Yu-Wing Tai , Chi-Keung Tang

Can we automatically group images into semantically meaningful clusters when ground-truth annotations are absent? The task of unsupervised image classification remains an important, and open challenge in computer vision. Several recent…

Computer Vision and Pattern Recognition · Computer Science 2020-07-06 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Marc Proesmans , Luc Van Gool

Occlusion removal is an interesting application of image enhancement, for which, existing work suggests manually-annotated or domain-specific occlusion removal. No work tries to address automatic occlusion detection and removal as a…

Computer Vision and Pattern Recognition · Computer Science 2019-05-08 Kumara Kahatapitiya , Dumindu Tissera , Ranga Rodrigo

Motivated by the need for estimating the 3D pose of arbitrary objects, we consider the challenging problem of class-agnostic object viewpoint estimation from images only, without CAD model knowledge. The idea is to leverage features learned…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 Yang Xiao , Yuming Du , Renaud Marlet

In this paper, we consider the problem of simultaneously detecting objects and inferring their visual attributes in an image, even for those with no manual annotations provided at the training stage, resembling an open-vocabulary scenario.…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Keyan Chen , Xiaolong Jiang , Yao Hu , Xu Tang , Yan Gao , Jianqi Chen , Weidi Xie

Common object counting in a natural scene is a challenging problem in computer vision with numerous real-world applications. Existing image-level supervised common object counting approaches only predict the global object count and rely on…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Hisham Cholakkal , Guolei Sun , Fahad Shahbaz Khan , Ling Shao