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This paper presents a pose-free, feed-forward 3D Gaussian Splatting (3DGS) framework designed to handle unfavorable input views. A common rendering setup for training feed-forward approaches places a 3D object at the world origin and…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Yuki Fujimura , Takahiro Kushida , Kazuya Kitano , Takuya Funatomi , Yasuhiro Mukaigawa

Place recognition is a crucial component that enables autonomous vehicles to obtain localization results in GPS-denied environments. In recent years, multimodal place recognition methods have gained increasing attention. They overcome the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Zhangshuo Qi , Junyi Ma , Jingyi Xu , Zijie Zhou , Luqi Cheng , Guangming Xiong

We present a novel method for precise 3D object localization in single images from a single calibrated camera using only 2D labels. No expensive 3D labels are needed. Thus, instead of using 3D labels, our model is trained with…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Daniel Kienzle , Julian Lorenz , Katja Ludwig , Rainer Lienhart

Global visual localization estimates the absolute pose of a camera using a single image, in a previously mapped area. Obtaining the pose from a single image enables many robotics and augmented/virtual reality applications. Inspired by…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Mohammad Altillawi , Shile Li , Sai Manoj Prakhya , Ziyuan Liu , Joan Serrat

We present a multi-camera 3D pedestrian detection method that does not need to train using data from the target scene. We estimate pedestrian location on the ground plane using a novel heuristic based on human body poses and person's…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 João Paulo Lima , Rafael Roberto , Lucas Figueiredo , Francisco Simões , Veronica Teichrieb

This study addresses the challenge of performing visual localization in demanding conditions such as night-time scenarios, adverse weather, and seasonal changes. While many prior studies have focused on improving image-matching performance…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Khang Truong Giang , Soohwan Song , Sungho Jo

For applications such as autonomous driving, self-localization/camera pose estimation and scene parsing are crucial technologies. In this paper, we propose a unified framework to tackle these two problems simultaneously. The uniqueness of…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Peng Wang , Ruigang Yang , Binbin Cao , Wei Xu , Yuanqing Lin

We propose real-time, six degrees of freedom (6DoF), 3D face pose estimation without face detection or landmark localization. We observe that estimating the 6DoF rigid transformation of a face is a simpler problem than facial landmark…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Vítor Albiero , Xingyu Chen , Xi Yin , Guan Pang , Tal Hassner

While generalizable 3D Gaussian splatting enables efficient, high-quality rendering of unseen scenes, it heavily depends on precise camera poses for accurate geometry. In real-world scenarios, obtaining accurate poses is challenging,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Youngju Na , Taeyeon Kim , Jumin Lee , Kyu Beom Han , Woo Jae Kim , Sung-eui Yoon

3D-consistent image generation from a single 2D semantic label is an important and challenging research topic in computer graphics and computer vision. Although some related works have made great progress in this field, most of the existing…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Bo Li , Yi-ke Li , Zhi-fen He , Bin Liu , Yun-Kun Lai

One of the key criticisms of deep learning is that large amounts of expensive and difficult-to-acquire training data are required in order to train models with high performance and good generalization capabilities. Focusing on the task of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Jack Langerman , Ziming Qiu , Gábor Sörös , Dávid Sebők , Yao Wang , Howard Huang

The goal of this paper is to detect what has changed, if anything, between two "in the wild" images of the same 3D scene acquired from different camera positions and at different temporal instances. The open-set nature of this problem,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Ragav Sachdeva , Andrew Zisserman

Generating high-quality novel view renderings of 3D Gaussian Splatting (3DGS) in scenes featuring transient objects is challenging. We propose a novel hybrid representation, termed as HybridGS, using 2D Gaussians for transient objects per…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Jingyu Lin , Jiaqi Gu , Lubin Fan , Bojian Wu , Yujing Lou , Renjie Chen , Ligang Liu , Jieping Ye

3D Gaussian Splatting (3DGS) has become one of the most promising 3D reconstruction technologies. However, label noise in real-world scenarios-such as moving objects, non-Lambertian surfaces, and shadows-often leads to reconstruction…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Han Ling , Xian Xu , Yinghui Sun , Quansen Sun

The capability of multi-robot SLAM approaches to merge localization history and maps from different observers is often challenged by the difficulty in establishing data association. Loop closure detection between perceptual inputs of…

Simultaneous localization and mapping is essential for position tracking and scene understanding. 3D Gaussian-based map representations enable photorealistic reconstruction and real-time rendering of scenes using multiple posed cameras. We…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Lisong C. Sun , Neel P. Bhatt , Jonathan C. Liu , Zhiwen Fan , Zhangyang Wang , Todd E. Humphreys , Ufuk Topcu

The development of autonomous vehicles generates a tremendous demand for a low-cost solution with a complete set of camera sensors capturing the environment around the car. It is essential for object detection and tracking to address these…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Pha Nguyen , Kha Gia Quach , Chi Nhan Duong , Son Lam Phung , Ngan Le , Khoa Luu

To automatically localize a target object in an image is crucial for many computer vision applications. To represent the 2D object, ellipse labels have recently been identified as a promising alternative to axis-aligned bounding boxes. This…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Vincent Gaudillière , Leo Pauly , Arunkumar Rathinam , Albert Garcia Sanchez , Mohamed Adel Musallam , Djamila Aouada

This paper introduces GS-Pose, a unified framework for localizing and estimating the 6D pose of novel objects. GS-Pose begins with a set of posed RGB images of a previously unseen object and builds three distinct representations stored in a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Dingding Cai , Janne Heikkilä , Esa Rahtu

Camera localization is a fundamental and key component of autonomous driving vehicles and mobile robots to localize themselves globally for further environment perception, path planning and motion control. Recently end-to-end approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Mi Tian , Qiong Nie , Hao Shen