MATLAB: Calculate the volume from slices of image

3dareasegmentationslicesofimagevolume

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If you stored all of the data into one 3D array, then use nnz() to get the number of cubic pixels. Multiply that by the x resolution times the y resolution times the z resolution to get real-world volumes; the x and y resolution are usually the same but the z is often higher. (I am using resolution in the sense of distance between centers.)

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MATLAB: How to calculate distance between center of white pixels in an image

REad about imdistline; this will allow you to calculate the distance between the points interactively. For this you are supposed to have image toolbox.

[y,x] = find(I==1) ;  % give the pixel value

The above line, gives you the coordinates/ points of the required pixel. YOu have the points in hand, you can do the process needed.

MATLAB: Segment all the images in the lisbox

projectdir = 'the/directory_that/the/images/are_in';
selected_image_idx = get(handles.listbox1, 'Value');
all_image_names = cellstr( get(handles.listbox1, 'String') );
selected_image_names = all_image_names(selected_image_idx);
num_selected = length(selected_image_names);
for K = 1 : num_selected
  this_name = selected_image_names{K};
  this_image_file = fullfile( projectdir, this_name );   %presuming the stored name includes the extension
  this_image = imread(this_image_file);
  imshow(handles.axes1, this_image);      %original image
  title(handles.axes1, ['Original image: ', this_name ];
  title(handles.axes2, 'Segmentation being computed');
  imshow(handles.axes2, nan(1,1,3));      %blank output while we compute segmentation
  drawnow();
  segmented_image = segment_one_image(this_image);
  imshow(handles.axes2, segmented_image);
  title(handles.axes2, ['Segmented image: ', this_name ];
  drawnow();
end

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MATLAB: How to calculate distance between center of white pixels in an image

MATLAB: Segment all the images in the lisbox

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