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Object detection is a typical multi-task learning application, which optimizes classification and regression simultaneously. However, classification loss always dominates the multi-task loss in anchor-based methods, hampering the consistent…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Wenxin Yu , Xueling Shen , Jiajie Hu , Dong Yin

Current high-quality object detection approaches use the scheme of salience-based object proposal methods followed by post-classification using deep convolutional features. This spurred recent research in improving object proposal methods.…

计算机视觉与模式识别 · 计算机科学 2015-12-10 Christian Szegedy , Scott Reed , Dumitru Erhan , Dragomir Anguelov , Sergey Ioffe

We focus on the task of amodal 3D object detection in RGB-D images, which aims to produce a 3D bounding box of an object in metric form at its full extent. We introduce Deep Sliding Shapes, a 3D ConvNet formulation that takes a 3D…

计算机视觉与模式识别 · 计算机科学 2016-03-10 Shuran Song , Jianxiong Xiao

We present a framework for discriminative sequence classification where the learner works directly in the high dimensional predictor space of all subsequences in the training set. This is possible by employing a new coordinate-descent…

机器学习 · 计算机科学 2010-08-04 Georgiana Ifrim , Carsten Wiuf

We study the fundamental and timely problem of learning long sequences in autoregressive modeling and next-token prediction under model misspecification, measured by the joint Kullback--Leibler (KL) divergence. Our goal is to characterize…

机器学习 · 计算机科学 2026-05-13 Yunbei Xu , Yuzhe Yuan , Ruohan Zhan

While 2D object detection has improved significantly over the past, real world applications of computer vision often require an understanding of the 3D layout of a scene. Many recent approaches to 3D detection use LiDAR point clouds for…

计算机视觉与模式识别 · 计算机科学 2020-11-20 Jihao Andreas Lin , Jakob Brünker , Daniel Fährmann

Several scalable sample-based methods to compute the Kullback Leibler (KL) divergence between two distributions have been proposed and applied in large-scale machine learning models. While they have been found to be unstable, the…

机器学习 · 计算机科学 2021-09-07 Sandesh Ghimire , Prashnna K Gyawali , Linwei Wang

This paper proposes two linear projection methods for supervised dimension reduction using only the first and second-order statistics. The methods, each catering to a different parameter regime, are derived under the general Gaussian model…

信息论 · 计算机科学 2024-08-13 Biao Chen , Joshua Kortje

Popular Hough Transform-based object detection approaches usually construct an appearance codebook by clustering local image features. However, how to choose appropriate values for the parameters used in the clustering step remains an open…

计算机视觉与模式识别 · 计算机科学 2016-03-29 Jianyu Tang , Hanzi Wang , Yan Yan

Object detection models perform well at localizing and classifying objects that they are shown during training. However, due to the difficulty and cost associated with creating and annotating detection datasets, trained models detect a…

计算机视觉与模式识别 · 计算机科学 2020-12-01 Ayush Jaiswal , Yue Wu , Pradeep Natarajan , Premkumar Natarajan

With the advancements made in deep learning, computer vision problems like object detection and segmentation have seen a great improvement in performance. However, in many real-world applications such as autonomous driving vehicles, the…

计算机视觉与模式识别 · 计算机科学 2021-08-10 Kumari Deepshikha , Sai Harsha Yelleni , P. K. Srijith , C Krishna Mohan

Deep neural networks (DNNs) have enabled astounding progress in several vision-based problems. Despite showing high predictive accuracy, recently, several works have revealed that they tend to provide overconfident predictions and thus are…

计算机视觉与模式识别 · 计算机科学 2023-03-28 Muhammad Akhtar Munir , Muhammad Haris Khan , Salman Khan , Fahad Shahbaz Khan

Training generative models to sample from unnormalized density functions is an important and challenging task in machine learning. Traditional training methods often rely on the reverse Kullback-Leibler (KL) divergence due to its…

机器学习 · 计算机科学 2025-03-05 Jiajun He , Wenlin Chen , Mingtian Zhang , David Barber , José Miguel Hernández-Lobato

Large-scale transmission radiography scanners are used to image vehicles and cargo containers. Acquired images are inspected for threats by a human operator or a computer algorithm. To make accurate detections, it is important that image…

仪器与探测器 · 物理学 2016-08-15 Thomas W. Rogers , James Ollier , Edward J. Morton , Lewis D. Griffin

Recent research has revealed that deep generative models including flow-based models and Variational Autoencoders may assign higher likelihoods to out-of-distribution (OOD) data than in-distribution (ID) data. However, we cannot sample OOD…

机器学习 · 计算机科学 2023-03-03 Yufeng Zhang , Jialu Pan , Wanwei Liu , Zhenbang Chen , Ji Wang , Zhiming Liu , Kenli Li , Hongmei Wei

This paper presents a novel framework for robust 3D object detection from point clouds via cross-modal hallucination. Our proposed approach is agnostic to either hallucination direction between LiDAR and 4D radar. We introduce multiple…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Jianning Deng , Gabriel Chan , Hantao Zhong , Chris Xiaoxuan Lu

Moving objects are frequently seen in daily life and usually appear blurred in images due to their motion. While general object retrieval is a widely explored area in computer vision, it primarily focuses on sharp and static objects, and…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Rong Zou , Marc Pollefeys , Denys Rozumnyi

Oriented object detection predicts orientation in addition to object location and bounding box. Precisely predicting orientation remains challenging due to angular periodicity, which introduces boundary discontinuity issues and symmetry…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Xavier Bou , Gabriele Facciolo , Rafael Grompone von Gioi , Jean-Michel Morel , Thibaud Ehret

A global threshold (e.g., 0.5) is often applied to determine which bounding boxes should be included in the final results for an object detection task. A higher threshold reduces false positives but may result in missing a significant…

图像与视频处理 · 电气工程与系统科学 2024-09-26 Tingting Yang , Liang Xiao , Yizhe Zhang

Efficient generation of high-quality object proposals is an essential step in state-of-the-art object detection systems based on deep convolutional neural networks (DCNN) features. Current object proposal algorithms are computationally…

计算机视觉与模式识别 · 计算机科学 2016-04-14 Yongxi Lu , Tara Javidi