Image registration for multimodal images µct and OCT

Hey,

I'm try to register two different image sets with the imregister function. I want to register an µCT and an OCT dataset on each other.

Both scans have different resolutions and additionally the OCT scan has different resolution in the different axes. I know that they more or less from the same spot and I want to with images are matches to each other.

load('muct_images.mat')
load('oct_images.mat')

muct_images = cat(3,imagedata_muct{:});
oct_images = cat(3,imagedata_oct{:});

muct_size = imref3d(size(muct_images),3.54,3.54,3.54); 
oct_size = imref3d(size(oct_image),10,2.29,20);

This is how I load my images and then i set my voxel sizes. Perhaps I did something wrong.

[optimizer,metric] = imregconfig('multimodal');
movingRegisteredVolume = imregister(oct_images,oct_size,muct_images,muct_size,'affine', optimizer, metric);

This is what I did but if I'm using the imshowpair with the center of the fixed images and the registered images it doesn't show a match at all.

Can you give me some information or some tips or can I register multimodal images with different resolution?

Thank you very much!

Answer 1

[Divya Gaddipati]

Please refer to the below link to understand how to perform image registration for multi-modality images

https://www.mathworks.com/help/images/registering-multimodal-3-d-medical-images.html?s_tid=answers_rc2-2_p5_MLT

Hope this helps!