Calculate the measurements of a Binary Image with an ndims of 3

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Ryan Tigera
Ryan Tigera 2020-11-16
评论： Ryan Tigera 2020-11-19
I am analyzing a series of images that increase the volume of the yellow plume over a series of time steps. My goal is to compare the area, centroid, outline and lengths of the largest finger of each yellow plume with other similiar images in a table as well as have MATLAB show the centroid and extrema on the image. In order to measure these properties, Matlab states I need a ndims of 2 or less where my binary image is 3. I used the imbinarize command to create a binary image and I recieved this error using regionprops.
An example of the photo to be analyzed is attached to this post.
Thanks for your help.
Ryan
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Ryan Tigera
Ryan Tigera 2020-11-19
Hi Rik,
Thanks for the help. In reviewing my code, I skipped this step.
Thanks again for your help.

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回答（1 个）

Shashank Gupta
Shashank Gupta 2020-11-19
编辑：Shashank Gupta 2020-11-19
Hey Ryan,
you might need to convert your RGB image to Gray image first and then binarize it, this will make sure you have ndim equals to 2. Attaching a small piece of code for your referece.
% Read image
img = imread('A,T=8min,V=40mL,TR.JPG');
% Convert RGB to gray.
im = rgb2gray(img);
% Binarize.
im = imbinarize(im);
% Use regionprop function according to your necessity.
stats = regionprops('table',im,'Centroid',...
'MajorAxisLength','MinorAxisLength')
Hope this helped.
Cheers.
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