Load an image into the workspace. Create a copy with a rotation offset applied.

A = imread('cameraman.tif');
B = imrotate(A,5,'bicubic','crop');

Create blended overlay image, scaling the intensities of A and B jointly as a single data set. View the fused image.

C = imfuse(A,B,'blend','Scaling','joint');
imshow(C)

Save the resulting image as a .png file.

imwrite(C,'my_blend_overlay.png');

Load an image into the workspace. Create a copy and apply a rotation offset.

A = imread('cameraman.tif');
B = imrotate(A,5,'bicubic','crop');

Create a blended overlay image, using red for image A, green for image B, and yellow for areas of similar intensity between the two images. Then, display the overlay image.

C = imfuse(A,B,'falsecolor','Scaling','joint','ColorChannels',[1 2 0]);
imshow(C)

Save the resulting image as a .png file.

imwrite(C,'my_blend_red-green.png');

Load an image into the workspace and create a spatial referencing object associated with it.

A = dicomread('knee1.dcm');
RA = imref2d(size(A));

Create a second image by resizing image A and create a spatial referencing object associated with that image.

B = imresize(A,2);
RB = imref2d(size(B));

Set referencing object parameters to specify the limits of the coordinates in world coordinates.

RB.XWorldLimits = RA.XWorldLimits;
RB.YWorldLimits = RA.YWorldLimits;

Create a blended overlay image using color to indicate areas of similar intensity. This example uses red for image A, green for image B, and yellow for areas of similar intensity between the two images.

C = imfuse(A,B,'falsecolor','Scaling','joint','ColorChannels',[1 2 0]);

Display the fused image. Note how the images do not appear to share many areas of similar intensity. For this example, the fused image is shrunk for easier display.

C = imresize(C,0.5);
imshow(C)

Create a new fused image, this time using the spatial referencing information in RA and RB.

[D,RD] = imfuse(A,RA,B,RB,'ColorChannels',[1 2 0]);

Display the new fused image. In this version, the image appears yellow because the images A and B have the same extent in the world coordinate system. The images actually are aligned, even though B is twice the size of A. For this example, the fused image is shrunk for easier display.

D = imresize(D,0.5);
imshow(D)