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Unsupervised retrieval of image features is vital for many computer vision tasks where the annotation is missing or scarce. In this work, we propose a new unsupervised approach to detect the landmarks in images, validating it on the popular…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Iaroslav Bespalov , Nazar Buzun , Dmitry V. Dylov

This paper presents a novel approach for landmark recognition in images that we've successfully deployed at Mail ru. This method enables us to recognize famous places, buildings, monuments, and other landmarks in user photos. The main…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Andrei Boiarov , Eduard Tyantov

Automated prostate segmentation in MRI is highly demanded for computer-assisted diagnosis. Recently, a variety of deep learning methods have achieved remarkable progress in this task, usually relying on large amounts of training data. Due…

Image and Video Processing · Electrical Eng. & Systems 2020-02-20 Quande Liu , Qi Dou , Lequan Yu , Pheng Ann Heng

We present a vehicle self-localization method using point-based deep neural networks. Our approach processes measurements and point features, i.e. landmarks, from a high-definition digital map to infer the vehicle's pose. To learn the best…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Nico Engel , Vasileios Belagiannis , Klaus Dietmayer

The diagnosis of prostate cancer increasingly depends on multimodal imaging, particularly magnetic resonance imaging (MRI) and transrectal ultrasound (TRUS). However, accurate registration between these modalities remains a fundamental…

Image and Video Processing · Electrical Eng. & Systems 2025-06-03 Xudong Ma , Nantheera Anantrasirichai , Stefanos Bolomytis , Alin Achim

Location information is proven to benefit the deep learning models on capturing the manifold structure of target objects, and accordingly boosts the accuracy of medical image segmentation. However, most existing methods encode the location…

Image and Video Processing · Electrical Eng. & Systems 2021-06-29 Quanziang Wang , Renzhen Wang , Yuexiang Li , Kai Ma , Yefeng Zheng , Deyu Meng

Image-guided radiation therapy can benefit from accurate motion tracking by ultrasound imaging, in order to minimize treatment margins and radiate moving anatomical targets, e.g., due to breathing. One way to formulate this tracking problem…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Alvaro Gomariz , Weiye Li , Ece Ozkan , Christine Tanner , Orcun Goksel

Procrustes Analysis is a Morphometric method based on Configurations of Landmarks that estimates the superimposition parameters by least-squares; for this reason, the procedure is very sensitive to outliers. In the first part of the paper…

Applications · Statistics 2017-03-16 A. Garcia-Perez , M. A. Cabrero-Ortega

Accurate tracking of an anatomical landmark over time has been of high interests for disease assessment such as minimally invasive surgery and tumor radiation therapy. Ultrasound imaging is a promising modality benefiting from low-cost and…

Computer Vision and Pattern Recognition · Computer Science 2023-02-01 Zhihua Liu , Bin Yang , Yan Shen , Xuejun Ni , Huiyu Zhou

We propose a new Patch-based Iterative Network (PIN) for fast and accurate landmark localisation in 3D medical volumes. PIN utilises a Convolutional Neural Network (CNN) to learn the spatial relationship between an image patch and…

Computer Vision and Pattern Recognition · Computer Science 2018-10-09 Yuanwei Li , Amir Alansary , Juan J. Cerrolaza , Bishesh Khanal , Matthew Sinclair , Jacqueline Matthew , Chandni Gupta , Caroline Knight , Bernhard Kainz , Daniel Rueckert

Visual localization is a key technique to a variety of applications, e.g., autonomous driving, AR/VR, and robotics. For these real applications, both efficiency and accuracy are important especially on edge devices with limited computing…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Fei Xue , Ignas Budvytis , Roberto Cipolla

Using geometric landmarks like lines and planes can increase navigation accuracy and decrease map storage requirements compared to commonly-used LiDAR point cloud maps. However, landmark-based registration for applications like loop closure…

Robotics · Computer Science 2022-12-27 Parker C. Lusk , Devarth Parikh , Jonathan P. How

Image registration is useful for quantifying morphological changes in longitudinal MR images from prostate cancer patients. This paper describes a development in improving the learning-based registration algorithms, for this challenging…

Image and Video Processing · Electrical Eng. & Systems 2022-07-15 Ziyi Shen , Qianye Yang , Yuming Shen , Francesco Giganti , Vasilis Stavrinides , Richard Fan , Caroline Moore , Mirabela Rusu , Geoffrey Sonn , Philip Torr , Dean Barratt , Yipeng Hu

In image registration, a proper transformation should be topology preserving. Especially for landmark-based image registration, if the displacement of one landmark is larger enough than those of neighbourhood landmarks, topology violation…

Numerical Analysis · Mathematics 2014-10-14 R. Cavoretto , A. De Rossi , H. Qiao , B. Quatember , W. Recheis , M. Mayr

In this paper, we address the problem of landmark-based visual place recognition. In the state-of-the-art method, accurate object proposal algorithms are first leveraged for generating a set of local regions containing particular landmarks…

Robotics · Computer Science 2018-08-24 Bo Yang , Jun Li , Xiaosu Xu , Hong Zhang

Automotive self-localization is an essential task for any automated driving function. This means that the vehicle has to reliably know its position and orientation with an accuracy of a few centimeters and degrees, respectively. This paper…

Despite significant algorithmic advances in vision-based positioning, a comprehensive probabilistic framework to study its performance has remained unexplored. The main objective of this paper is to develop such a framework using ideas from…

Information Theory · Computer Science 2024-09-17 Haozhou Hu , Harpreet S. Dhillon , R. Michael Buehrer

Registration, which aims to find an optimal one-to-one correspondence between different data, is an important problem in various fields. This problem is especially challenging when large deformations occur. In this paper, we present a novel…

Differential Geometry · Mathematics 2013-10-08 Lam Ka Chun , Lok Ming Lui

Facial landmark localization plays an important role in face recognition and analysis applications. In this paper, we give a brief introduction to a coarse-to-fine pipeline with neural networks and sequential regression. First, a global…

Computer Vision and Pattern Recognition · Computer Science 2015-11-17 Zhiao Huang , Erjin Zhou , Zhimin Cao

In recent years, deep learning has emerged as a promising technique for medical image analysis. However, this application domain is likely to suffer from a limited availability of large public datasets and annotations. A common solution to…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Roberto Di Via , Matteo Santacesaria , Francesca Odone , Vito Paolo Pastore