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This paper concerns the research problem of point cloud registration to find the rigid transformation to optimally align the source point set with the target one. Learning robust point cloud registration models with deep neural networks has…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Yu Hao , Yi Fang

Non-rigid inter-modality registration can facilitate accurate information fusion from different modalities, but it is challenging due to the very different image appearances across modalities. In this paper, we propose to train a non-rigid…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Xiaohuan Cao , Jianhua Yang , Li Wang , Zhong Xue , Qian Wang , Dinggang Shen

Multimodal MR-US registration is critical for prostate cancer diagnosis. However, this task remains challenging due to significant modality discrepancies. Existing methods often fail to align critical boundaries while being overly sensitive…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Xudong Ma , Nantheera Anantrasirichai , Stefanos Bolomytis , Alin Achim

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

We propose FlowReg, a deep learning-based framework for unsupervised image registration for neuroimaging applications. The system is composed of two architectures that are trained sequentially: FlowReg-A which affinely corrects for gross…

Computer Vision and Pattern Recognition · Computer Science 2021-09-02 Sergiu Mocanu , Alan R. Moody , April Khademi

In this paper, we propose a transformer-based procedure for the efficient registration of non-rigid 3D point clouds. The proposed approach is data-driven and adopts for the first time the transformer architecture in the registration task.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Giovanni Trappolini , Luca Cosmo , Luca Moschella , Riccardo Marin , Simone Melzi , Emanuele Rodolà

In autonomous driving, 3D object detection based on multi-modal data has become an indispensable approach when facing complex environments around the vehicle. During multi-modal detection, LiDAR and camera are simultaneously applied for…

Computer Vision and Pattern Recognition · Computer Science 2023-01-19 Rui Wan , Tianyun Zhao , Wei Zhao

The great success of Deep Neural Networks (DNNs) has inspired the algorithmic development of DNN-based Fixed-Point (DNN-FP) for computer vision tasks. DNN-FP methods, trained by Back-Propagation Through Time or computing the inaccurate…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Peng Qiao , Sidun Liu , Tao Sun , Ke Yang , Yong Dou

In this report we present an unsupervised image registration framework, using a pre-trained deep neural network as a feature extractor. We refer this to zero-shot learning, due to nonoverlap between training and testing dataset (none of the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Avinash Kori , Ganapathi Krishnamurthi

We present Deep Shape-from-Template (DeepSfT), a novel Deep Neural Network (DNN) method for solving real-time automatic registration and 3D reconstruction of a deformable object viewed in a single monocular image.DeepSfT advances the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 David Fuentes-Jimenez , David Casillas-Perez , Daniel Pizarro , Toby Collins , Adrien Bartoli

The ability to adapt medical image segmentation networks for a novel class such as an unseen anatomical or pathological structure, when only a few labelled examples of this class are available from local healthcare providers, is…

Image and Video Processing · Electrical Eng. & Systems 2022-01-19 Yiwen Li , Yunguan Fu , Qianye Yang , Zhe Min , Wen Yan , Henkjan Huisman , Dean Barratt , Victor Adrian Prisacariu , Yipeng Hu

Recent Transformer-based methods have achieved advanced performance in point cloud registration by utilizing advantages of the Transformer in order-invariance and modeling dependency to aggregate information. However, they still suffer from…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Guangyan Chen , Meiling Wang , Yufeng Yue , Qingxiang Zhang , Li Yuan

Point set registration is defined as a process to determine the spatial transformation from the source point set to the target one. Existing methods often iteratively search for the optimal geometric transformation to register a given pair…

Graphics · Computer Science 2019-04-03 Lingjing Wang , Jianchun Chen , Xiang Li , Yi Fang

Nonrigid registration is vital to medical image analysis but remains challenging for diffusion MRI (dMRI) due to its high-dimensional, orientation-dependent nature. While classical methods are accurate, they are computationally demanding,…

Image and Video Processing · Electrical Eng. & Systems 2025-01-13 Gianfranco Cortes , Xiaoda Qu , Baba C. Vemuri

Purpose: The fusion of transrectal ultrasound (TRUS) and magnetic resonance (MR) images for guiding targeted prostate biopsy has significantly improved the biopsy yield of aggressive cancers. A key component of MR-TRUS fusion is image…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Grant Haskins , Jochen Kruecker , Uwe Kruger , Sheng Xu , Peter A. Pinto , Brad J. Wood , Pingkun Yan

Images from Positron Emission Tomography (PET) deliver functional data such as perfusion and metabolism. On the other hand, images from Magnetic Resonance Imaging (MRI) provide information describing anatomical structures. Fusing the…

Image and Video Processing · Electrical Eng. & Systems 2018-06-19 Hiliwi Leake Kidane , Stephanie Bricq , Alain Lalande

This paper presents a robust probabilistic point registration method for estimating the rigid transformation (i.e. rotation matrix and translation vector) between two pointcloud dataset. The method improves the robustness of point…

Computer Vision and Pattern Recognition · Computer Science 2019-12-12 Saman Fahandezh-Saadi , Di Wang , Masayoshi Tomizuka

Multimodal image registration is a challenging but essential step for numerous image-guided procedures. Most registration algorithms rely on the computation of complex, frequently non-differentiable similarity metrics to deal with the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Matteo Ronchetti , Wolfgang Wein , Nassir Navab , Oliver Zettinig , Raphael Prevost

Deformable image registration is a fundamental task in medical imaging. Due to the large computational complexity of deformable registration of volumetric images, conventional iterative methods usually face the tradeoff between the…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Kaicong Sun , Sven Simon

The Fractional Fourier Transform (FRT) corresponds to an arbitrary-angle rotation in the phase space, e.g. the time-frequency (TF) space, and generalizes the fundamentally important Fourier Transform. FRT applications range from classical…

Optics · Physics 2024-03-06 Michał Lipka , Michał Parniak