HOW TO CALCULATE THE TOTAL COUNTS PIXEL USING BINARIZE

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mohd akmal masud
mohd akmal masud 2021-8-2
评论： mohd akmal masud 2021-8-6
Hi all,
i try use the Gradient Weight segmentation funtion (as script).
I binarize it. Only got the volume (T1) like below. Means 178 multiply by the volume of one voxel(0.1ml) = 17.8 ml.
Can someone help me how to get the total counts, mean count, max count inside the volume??
T1 =
1×2 table
Area Centroid
____ __________________________
178 75.893 58.36 44.539
[spect map]=dicomread('I-131sphere10nisbah1');
info = dicominfo('I-131sphere10nisbah1');
%gp=info.SliceThickness;
spect=(squeeze(spect));%smooth3
aa=size(spect);aa=aa(3);
% NI KALAU VOLUME 1 10 NISBAH V1
seedR1 = 58; seedC1 = 76; seedP1 = 45;
W1 = graydiffweight(spect, seedC1, seedR1, seedP1 , 'GrayDifferenceCutoff', 1415);
thresh = 0.004196;
[BW1, D1] = imsegfmm(W1, seedC1, seedR1, seedP1, thresh);
figure, imshow3D(BW1)
T1 = regionprops('table', BW1,'Area','Centroid')
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mohd akmal masud
mohd akmal masud 2021-8-3
the problem is, i dont know how to extract the total counts in binarize volume . because the binarize volume only have 0 and 1 value on each pixel. while the gray image have 0 till 25000 counts on my pixel,
mohd akmal masud
mohd akmal masud 2021-8-6
this is what i mean the origional my gray image.
as you can see in this picture, there is counts in every pixel such as in picture, 2984.
So, I want to know the total counts in whole volume that i binarize.

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采纳的回答

Walter Roberson
Walter Roberson 2021-8-2
total_counts = sum(T1.Area)
mean_count = mean(T1.Area)
max_count = max(T1.Area)
  1 个评论
mohd akmal masud
mohd akmal masud 2021-8-3
>> total_counts = sum(T1.Area)
total_counts =
270
>> mean_count = mean(T1.Area)
mean_count =
270
>> max_count = max(T1.Area)
max_count =
270
all the answer is sum of the voxel. not counts inside the voxel
what i need is max count on that volume, let example the max count is 3210
then the total count is 11297
the sum voxel is 270
then the mean count is 11297 divided by 270

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