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Low-shot object counters estimate the number of objects in an image using few or no annotated exemplars. Objects are localized by matching them to prototypes, which are constructed by unsupervised image-wide object appearance aggregation.…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Jer Pelhan , Alan Lukežič , Vitjan Zavrtanik , Matej Kristan

Large generative diffusion models have revolutionized text-to-image generation and offer immense potential for conditional generation tasks such as image enhancement, restoration, editing, and compositing. However, their widespread adoption…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Kangfu Mei , Mauricio Delbracio , Hossein Talebi , Zhengzhong Tu , Vishal M. Patel , Peyman Milanfar

Zero-shot object counting aims to count instances of arbitrary object categories specified by text descriptions. Existing methods typically rely on vision-language models like CLIP, but often exhibit limited sensitivity to text prompts. We…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Yifei Qian , Zhongliang Guo , Bowen Deng , Chun Tong Lei , Shuai Zhao , Chun Pong Lau , Xiaopeng Hong , Michael P. Pound

Low-shot counters estimate the number of objects corresponding to a selected category, based on only few or no exemplars annotated in the image. The current state-of-the-art estimates the total counts as the sum over the object location…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Jer Pelhan , Alan Lukežič , Vitjan Zavrtanik , Matej Kristan

Camouflaged Object Detection (COD) is a challenging task in computer vision due to the high similarity between camouflaged objects and their surroundings. Existing COD methods primarily employ semantic segmentation, which suffers from…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Zhongxi Chen , Ke Sun , Xianming Lin , Rongrong Ji

Counting objects is a fundamental but challenging problem. In this paper, we propose diffusion-based, geometry-free, and learning-free methodologies to count the number of objects in images. The main idea is to represent each object by a…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Mengyi Tang , Maryam Yashtini , Sung Ha Kang

Collaborative 3D object detection holds significant importance in the field of autonomous driving, as it greatly enhances the perception capabilities of each individual agent by facilitating information exchange among multiple agents.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-05 Zhe Huang , Shuo Wang , Yongcai Wang , Lei Wang

Detecting novel objects from few examples has become an emerging topic in computer vision recently. However, these methods need fully annotated training images to learn new object categories which limits their applicability in real world…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Amirreza Shaban , Amir Rahimi , Thalaiyasingam Ajanthan , Byron Boots , Richard Hartley

We consider low-shot counting of arbitrary semantic categories in the image using only few annotated exemplars (few-shot) or no exemplars (no-shot). The standard few-shot pipeline follows extraction of appearance queries from exemplars and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Nikola Djukic , Alan Lukezic , Vitjan Zavrtanik , Matej Kristan

Few-shot detection-based counters estimate the number of instances in the image specified only by a few test-time exemplars. A common approach to localize objects across multiple sizes is to merge backbone features of different resolutions.…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Jer Pelhan , Alan Lukezic , Matej Kristan

In this work, we address the problem of few-shot multi-class object counting with point-level annotations. The proposed technique leverages a class agnostic attention mechanism that sequentially attends to objects in the image and extracts…

Computer Vision and Pattern Recognition · Computer Science 2020-07-09 Negin Sokhandan , Pegah Kamousi , Alejandro Posada , Eniola Alese , Negar Rostamzadeh

Few-shot object detection (FSOD) for optical remote sensing images aims to detect rare objects with only a few annotated bounding boxes. The limited training data makes it difficult to represent the data distribution of realistic remote…

Image and Video Processing · Electrical Eng. & Systems 2025-07-30 Yanxing Liu , Jiancheng Pan , Bingchen Zhang

The burgeoning field of camouflaged object detection (COD) seeks to identify objects that blend into their surroundings. Despite the impressive performance of recent models, we have identified a limitation in their robustness, where…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Xue-Jing Luo , Shuo Wang , Zongwei Wu , Christos Sakaridis , Yun Cheng , Deng-Ping Fan , Luc Van Gool

Accurately controlling object count in text-to-image generation remains a key challenge. Supervised methods often fail, as training data rarely covers all count variations. Methods that manipulate the denoising process to add or remove…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Oz Zafar , Yuval Cohen , Lior Wolf , Idan Schwartz

Few-shot instance segmentation extends the few-shot learning paradigm to the instance segmentation task, which tries to segment instance objects from a query image with a few annotated examples of novel categories. Conventional approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Minh-Quan Le , Tam V. Nguyen , Trung-Nghia Le , Thanh-Toan Do , Minh N. Do , Minh-Triet Tran

Camouflaged object detection is a challenging task that aims to identify objects that are highly similar to their background. Due to the powerful noise-to-image denoising capability of denoising diffusion models, in this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Zhennan Chen , Rongrong Gao , Tian-Zhu Xiang , Fan Lin

Capturing images is a key part of automation for high-level tasks such as scene text recognition. Low-light conditions pose a challenge for high-level perception stacks, which are often optimized on well-lit, artifact-free images.…

Image and Video Processing · Electrical Eng. & Systems 2023-11-01 Cindy M. Nguyen , Eric R. Chan , Alexander W. Bergman , Gordon Wetzstein

Diffusion models have achieved remarkable success in image generation but their practical application is often hindered by the slow sampling speed. Prior efforts of improving efficiency primarily focus on compressing models or reducing the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Jiuyi Xu , Qing Jin , Meida Chen , Andrew Feng , Yang Sui , Yangming Shi

This paper presents OC-DiT, a novel class of diffusion models designed for object-centric prediction, and applies it to zero-shot instance segmentation. We propose a conditional latent diffusion framework that generates instance masks by…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Maximilian Ulmer , Wout Boerdijk , Rudolph Triebel , Maximilian Durner

This work studies the problem of few-shot object counting, which counts the number of exemplar objects (i.e., described by one or several support images) occurring in the query image. The major challenge lies in that the target objects can…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Zhiyuan You , Kai Yang , Wenhan Luo , Xin Lu , Lei Cui , Xinyi Le
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