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几何标定与运动补偿

几何标定与运动补偿是指校正重建中所假设的采集几何的误差,也就是每个投影时射线源、探测器和物体实际所处的位置。微小的错位,比如探测器倾斜、旋转轴偏移、机架形变或患者移动,都会造成模糊、双边缘和条纹,任何正则项都无法消除。

标定可以使用带标记点的体模,也可以是无标记的自标定,即以数据一致性或图像锐度为目标调整几何参数。运动补偿估计扫描过程中物体的刚性或非刚性运动,这在头部与四肢 CBCT、口腔成像和长时间的工业扫描中很常见。

近期工作让重建算子对几何参数可微,从而可以用梯度下降拟合位姿和标定参数;与之密切相关的是采集轨迹设计和视角选择。几何记录准确,也正是 FIPS 和核桃数据集等实测数据有价值的原因。

在可检索的目录中浏览全部 28 篇「几何标定与运动补偿」论文

入门推荐

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论文

全部 28 篇,按时间倒序。

论文发表出处年份链接
Active View Selection with Perturbed Gaussian Ensemble for Tomographic ReconstructionECCV2026paper
Conditional Diffusion Posterior Alignment for Sparse-View CT Reconstruction预印本2026paper
Cone-beam artifact reduction in Gamma Knife CBCT images using a line-arc-line scan trajectory预印本2026paper
Exact-GS: Mathematically Rigorous and Accurate 3D Gaussian Splatting for 3D X-Ray ReconstructionCVPR2026paper · code
GB-SVFBP: Gaussian-Based Shift-Variant FBP neural network预印本2026paper
Geometry-Aware Diffusion Approximate Posterior Sampling for Sparse-View and Limited-Angle CT预印本2026paper
Gradient-Based Trajectory Optimisation over Continuous Poses for Sparse-View Cone-Beam CT预印本2026paper
Model-Based Iterative Reconstruction with View-Dependent Detector Displacements for Cone-Beam CT预印本2026paper
Revisiting Pose Sensitivity in Splat-based Computed Tomography under Sparse-view ReconstructionCVPR2026paper
Unsupervised Multi-Parameter Inverse Solving for Reducing Ring Artifacts in 3D X-Ray CBCTAAAI2026paper · code
Robustness and Stability Analysis of Differentiable Shift-Variant FBP for Cone-Beam CT under Challenging Acquisition SettingsMELBA2026paper · project
Texture-preserving implicit neural representation for cone-beam CT truncated reconstruction预印本2026paper
TG-Field: Geometry-Aware Radiative Gaussian Fields for Tomographic ReconstructionAAAI2026paper
Tomographic Sparse View Selection Using the View Covariance LossTPAMI2026paper
TomoTransformer: Towards a Foundation Model for CT Reconstruction预印本2026paper
A CT Geometry With Multiple Centers Of Rotation For Solving Sparse View Problem预印本2025paper
An Iterative Reconstruction Method for Dental Cone-Beam Computed Tomography with a Truncated Field of View预印本2025paper
Enhancing Synthetic CT from CBCT via Multimodal Fusion and End-To-End RegistrationCAIP2025paper
Epi-NAF: Enhancing Neural Attenuation Fields for Limited-Angle CT with Epipolar ConsistencyISBI2025paper
Limited-Angle CBCT Reconstruction via Geometry-Integrated Cycle-domain Denoising Diffusion Probabilistic Models预印本2025paper
A Gradient-Based Approach to Fast and Accurate Head Motion Compensation in Cone-Beam CTTMI2025paper · code
Prior-Adapted Progressive Time-Resolved CBCT Reconstruction Using a Dynamic Reconstruction and Motion Estimation MethodMed Phys2025paper
Fan-Beam CT Reconstruction for Unaligned Sparse-View X-Ray Baggage Data预印本2024paper
Gradient-based geometry learning for fan-beam CT reconstructionPMB2023paper
Downsampled Imaging Geometric Modeling for Accurate CT Reconstruction via Deep LearningTMI2021paper · code
CT Reconstruction With PDF: Parameter-Dependent Framework for Data From Multiple Geometries and Dose LevelsTMI2021paper
Artifact-resistant motion estimation with a patient-specific artifact model for motion-compensated cone-beam CTMed Phys2013paper
A novel digital tomosynthesis (DTS) reconstruction method using a deformation field mapMed Phys2008paper

在可检索的目录中浏览全部 28 篇「几何标定与运动补偿」论文

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