Pulmonary nodule registration: Rigid or nonrigid?

Rigid and Nonrigid Achirality

Membrane Nonrigid Image Registration

We introduce a novel nonrigid 2D image registration method that establishes dense and accurate correspondences across images without the need of any manual intervention. Our key insight is to model the image as a membrane, i.e., a thin 3D surface, and to constrain its deformation based on its geometric properties. To do so, we derive a novel Bayesian formulation. We impose priors on the moving ...

Accelerated Nonrigid Image Registration

Many tasks in medical image analysis require the fusion of two images, for example to combine information provided by different image acquisition devices or monitor disease progression over time. Image registration is the process of aligning two images, such that corresponding points can be related. For this purpose, one image is deformed to match the other one. Rigid registration techniques tr...

Nonrigid Image Registration

Image registration is the process of determining correspondence between all points in two images of the same scene. Image analysis applications that involve two or more images of a scene often require registration of the images. Nonrigid image registration refers to a class of methods where the images to be registered have nonlinear geometric differences. Image registration has a long history. ...

Fast Entropy-Based Nonrigid Registration

Computer vision tasks such as learning, recognition, classification or segmentation applied to spatial data often requires spatial normalization of repeated features and structures. Spatial normalization, or in other words, image registration, is still a big hurdle for the image processing community. Its formulation often relies on the fact that correspondence is achieved when a similarity meas...