I am conducting experiments on driven piles on a PIV set up and when I upload my reference image for centroiding Matlab sets my image rotated 90 degrees, that is sets the width to the y axis..I have tried many things and can't seem to make it work. My image was taken in portrait with resolution of 1440 w by 2560 height.. Any thoughts would be appreciated..I want the analysis to look as a vertical push..Thank you in advance.

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