User`s guide

R2012a
7-2
Intensity-Based Image Registration
The new imregister function lets you automatically align two images using intensity
values, even when the images were created by two different devices (multimodal). With
intensity-based registration, you do not need to specify control points.
You use the new imregconfig function to create the optimizer and the metric that
imregister uses to specify the desired registration parameters.
Two New Functions to Visually Compare Images
The toolbox includes two new functions for visually comparing images: imshowpair and
imfuse.
imshowpair creates a composite of two images and displays them in a figure.
imfuse creates a composite of two images and returns a third image that is a numeric
matrix containing a fused version of the original images.
Circle Detection Using the Circular Hough Transform
The new imfindcircles function uses the Hough transform to find circular elements in
grayscale, RGB, or binary images. To view the circles that have been detected, overlaid
on the original image, use the viscircles function.
Performance Improvements
The performance of the imlincomb function has improved by taking advantage of
multicore capabilities.
New and Updated Demos
The toolbox includes these new and updated demos.
• Registering Multimodal MRI Images (ipexknee)
• Finding the Rotation and Scale of a Distorted Image (ipexrotate)
• Measuring the Radius of a Roll of Tape (ipexradius) – Updated to use the new
imfindcircles function