You can load images into Registration Estimator app from file or from the workspace. You can also provide optional spatial referencing information and an optional initial geometric transformation.
You can load images into Registration Estimator app from file or from the workspace. Access both methods by clicking the Load Images icon in the Registration Estimator app.
To load images from a file, click Load Images, and select the
Load from file option.
In the dialog box, select the file path of the moving and fixed images. Only certain file types are permitted: BMP, JPG, JPEG, TIF, TIFF, PNG, and DCM.
To load variable from the workspace, click Load Images and
Load from workspace option.
In the dialog box, select two images from your workspace. You can
work with a wider range of file formats by loading images from file into your
imread. Registration Estimator app
supports any workspace image that was loaded using
imread. You can
also read DICOM images into the workspace using
The Registration Estimator app only supports 2-D images. Before continuing,
all RGB images are converted to grayscale using the
If you have 2-D spatial referencing objects in your workspace, or if you load DICOM
images from a file, you can provide optional spatial referencing information. Spatial
referencing information is useful if you want to orient the images to a world coordinate
system. For more information about spatial referencing objects, see
If you load DICOM images into the workspace using
spatial referencing information in the metadata is no longer associated with the image
data. To preserve spatial referencing information with DICOM images, either load the
images from file or create an
imref2d object from the image metadata.
For more information about DICOM metadata, see Read Metadata from DICOM Files.
If you do not have spatial referencing information, the Spatial Referencing Object and DICOM Metadata radio buttons are inactive.
You can provide an optional initial geometric transformation using
projective2d geometric transformation objects
in your workspace. An initial geometric transformation is useful if you are processing a
batch of images with similar initial misalignment. Once the first moving image has been
registered, you can export the geometric transformation to the workspace and apply the
transformation to other images in the series. See Export the Results from Registration Estimator App.
If you do not have a geometric transformation object in your workspace, the Initial Transformation Object selection box is inactive.