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Complicated underwater environments bring new challenges to object detection, such as unbalanced light conditions, low contrast, occlusion, and mimicry of aquatic organisms. Under these circumstances, the objects captured by the underwater…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Pinhao Song , Pengteng Li , Linhui Dai , Tao Wang , Zhan Chen

Although two-stage object detectors have continuously advanced the state-of-the-art performance in recent years, the training process itself is far from crystal. In this work, we first point out the inconsistency problem between the fixed…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Hongkai Zhang , Hong Chang , Bingpeng Ma , Naiyan Wang , Xilin Chen

Four-variable-independent-regression localization losses, such as Smooth-$\ell_1$ Loss, are used by default in modern detectors. Nevertheless, this kind of loss is oversimplified so that it is inconsistent with the final evaluation metric,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Hanyang Peng , Shiqi Yu

We focus on the construction of a loss function for the bounding box regression. The Intersection over Union (IoU) metric is improved to converge faster, to make the surface of the loss function smooth and continuous over the whole searched…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Petra Števuliáková , Petr Hurtik

Current state-of-the-art two-stage models on instance segmentation task suffer from several types of imbalances. In this paper, we address the Intersection over the Union (IoU) distribution imbalance of positive input Regions of Interest…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Leonardo Rossi , Akbar Karimi , Andrea Prati

The pests captured with imaging devices may be relatively small in size compared to the entire images, and complex backgrounds have colors and textures similar to those of the pests, which hinders accurate feature extraction and makes pest…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Ga-Eun Kim , Chang-Hwan Son

Bounding box (bbox) regression is a fundamental task in computer vision. So far, the most commonly used loss functions for bbox regression are the Intersection over Union (IoU) loss and its variants. In this paper, we generalize existing…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Jiabo He , Sarah Erfani , Xingjun Ma , James Bailey , Ying Chi , Xian-Sheng Hua

Improving object detectors against occlusion, blur and noise is a critical step to deploy detectors in real applications. Since it is not possible to exhaust all image defects through data collection, many researchers seek to generate hard…

Computer Vision and Pattern Recognition · Computer Science 2019-04-01 Zeyi Huang , Wei Ke , Dong Huang

We present a method for 3D object detection and pose estimation from a single image. In contrast to current techniques that only regress the 3D orientation of an object, our method first regresses relatively stable 3D object properties…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Arsalan Mousavian , Dragomir Anguelov , John Flynn , Jana Kosecka

In this paper, we propose in our novel generative framework the use of Generative Adversarial Networks (GANs) to generate features that provide robustness for object detection on reduced quality images. The proposed GAN-based Detection of…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Charan D. Prakash , Lina J. Karam

Learning to detect an object in an image from very few training examples - few-shot object detection - is challenging, because the classifier that sees proposal boxes has very little training data. A particularly challenging training regime…

Computer Vision and Pattern Recognition · Computer Science 2020-11-23 Weilin Zhang , Yu-Xiong Wang , David A. Forsyth

We propose a segmentation-based bounding box generation method for omnidirectional pedestrian detection that enables detectors to tightly fit bounding boxes to pedestrians without omnidirectional images for training. Due to the wide angle…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Masato Tamura , Tomoaki Yoshinaga

Predictive uncertainty estimation is an essential next step for the reliable deployment of deep object detectors in safety-critical tasks. In this work, we focus on estimating predictive distributions for bounding box regression output with…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Ali Harakeh , Steven L. Waslander

In this report, we introduce the technical details of our submission to the VIPriors object detection challenge. Our solution is based on mmdetction of a strong baseline open-source detection toolbox. Firstly, we introduce an effective data…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Fei Shen , Xin He , Mengwan Wei , Yi Xie

Inadequate bounding box modeling in regression tasks constrains the performance of one-stage 3D object detection. Our study reveals that the primary reason lies in two aspects: (1) The limited center-offset prediction seriously impairs the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Weiping Xiao , Yiqiang Wu , Chang Liu , Yu Qin , Xiaomao Li , Liming Xin

We present a reinforcement learning approach for detecting objects within an image. Our approach performs a step-wise deformation of a bounding box with the goal of tightly framing the object. It uses a hierarchical tree-like representation…

Computer Vision and Pattern Recognition · Computer Science 2018-10-29 Jonas Koenig , Simon Malberg , Martin Martens , Sebastian Niehaus , Artus Krohn-Grimberghe , Arunselvan Ramaswamy

Compositional text-to-image (T2I) generation requires a model to honour multiple sub-prompts that describe distinct image regions. Recent work shows that the \emph{starting noise} of a diffusion model carries significant semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Hao Li

Many recent studies have shown that deep neural models are vulnerable to adversarial samples: images with imperceptible perturbations, for example, can fool image classifiers. In this paper, we present the first type-specific approach to…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Omid Mohamad Nezami , Akshay Chaturvedi , Mark Dras , Utpal Garain

Existing Incremental Object Detection (IOD) methods partially alleviate catastrophic forgetting when incrementally detecting new objects in real-world scenarios. However, many of these methods rely on the assumption that unlabeled old-class…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Zijia An , Boyu Diao , Libo Huang , Ruiqi Liu , Zhulin An , Yongjun Xu

The problem of computing category agnostic bounding box proposals is utilized as a core component in many computer vision tasks and thus has lately attracted a lot of attention. In this work we propose a new approach to tackle this problem…

Computer Vision and Pattern Recognition · Computer Science 2016-06-15 Spyros Gidaris , Nikos Komodakis