Plotting Image intensity from Matrix

Greetings to all ! I have a 3D matrix which represnts a Sheep_Logan Phantom. Is there any way to plot the intensity ogf the image matrix both in horizontal and vertical direction? I can do the same things with saving an image but I want it from the matrix that I have attached.

Answer 1

[Image Analyst]

Do you want the profile along some certain row or columns, like

rowProfile = squeeze(image3d(rowNumber, :, sliceNumber));
columnProfile = squeeze(image3d(:, colNumber, sliceNumber));

or do you want the average profile across the entire plane? Or the max projection? Have you seen slice?

[Amit Chakraborty]

@Image Analyst, Thank you for your reply. Yes I want the Intensity profile along some certain row or columns ( for a specific slice) for a specific direction (Horizontal/Vertical).

It should be 2D plot ( Having the shape of Gaussing Bell). Kind of Following.

[Image Analyst]

OK, but did my code not work? Did you even try it? It should produce a 1-D plot of the gray scale, like you showed. If you want a 2-D profile, then that is an image and you'd replace one of the number variables by a colon.

[Amit Chakraborty]

@Image Analyst, Thank you so much for helping this novice. your code is perfectly fine.

Another thing for my own knowledge:

How I do them : average profile across the entire plane and the max projection ?

[Image Analyst]

I would first get the entire plane as a 2-D image and then use max for the direction you want. For example

image2d = randi(255, 5, 4)

image2d = 5×4

135 151 116 211 98 187 192 160 112 179 167 117 107 77 125 114 35 113 144 28

verticalMaxProjection = max(image2d, [], 2)

verticalMaxProjection = 5×1

211 192 179 125 144

horizontalMaxProjection = max(image2d, [], 1)

horizontalMaxProjection = 1×4

135 187 192 211

[Amit Chakraborty]

@Image Analyst Thank you SO MUCH !!!!!!