Transition matrix to image not working

[HeNe5]

Hello 

I have a problem in my VI: I use Flat Field Correction to remove vignetting from my image. 

After the processing of this correction, I have two images : the original one (not corrected) and the corrected one. My goal is to transform both of them into matrix in order to find the one between them. 

My first matrix (I call it A) is 2448x2048

My second matrix (i call it C) is also 2448x2048

so i have kind of A x B = C

Mathematically,

B= (transposed(A)xA)^-1 x transposed(A) x C

B is indeed a squared matrix 

I tried to find B with labview in the attached Vi and then to multiply it with A to check if it's was good but it's actually not working. i can't move on in my project so that's why i'm calling for your help

I put the images I use down below

Thanks to you in advance

The images are in .TIFF so I can't upload them:

https://drive.google.com/drive/folders/1DVrO-zULwQ_GxJuzeDZONmTYVCZyovTu?usp=sharing

T.

[RavensFan]

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@HeNe5 wrote:

The images are in .TIFF so I can't upload them:

https://drive.google.com/drive/folders/1DVrO-zULwQ_GxJuzeDZONmTYVCZyovTu?usp=sharing

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You can put them in a .zip file and upload that.  Many people will avoid downloading stuff from a dropbox.

[HeNe5]

Thank you for the info 

Here there are : 

[RavensFan]

That is not a zip file.   You attached a .rar file.  Why?  That forces people to download 3rd party archive programs when zip files can be naturally opened by Windows explorer.

[HeNe5]

There you go, I'm sorry.

Just a beginner, will remember it.