reference to non-existent field solidity

hi I have error message in matlab 2017

reference to non-existent field 'solidity'

Error in Tumor(line denisty={stats.solidity};

how can I add reference

what did i miss ?

Answer 1

[Walter Roberson]

If stats was created by calling regionprops, then the field name should be Solidity with a capital S.

[Mohamed Nasr]

you mean I will edit

stats.solidity

to

stats.Solidity with Capital S Letter on all my code ?!

[Mohamed Nasr]

clear clc img=imread('brain1.jpg'); img1=rgb2gray(img); bw=imbinarize(img1 , 0.7); %Thresholding value if less than 0.7 color is black ,if morr than 0.7 color is white label=logical(bw); %area of tumor stats =regionprops(label,'Solidity','Area'); %healthy region denisty={stats.Solidity}; area={stats.Area}; high_dense_area = denisty>0.5 ; %Area of tumor max_area=max(area(high_dense_area)); %max area tumor_label=find(area==max_area); %place of tumor tumor = ismember(label,tumor_label); s=strel('square',5); tumor=imdilate(tumor,s); figure; subplot(1,3,1);imshow(img);title('Brain' ); subplot(1,3,2);imshow(tumor);title('Tumor alone' );

[Walter Roberson]

I had to make some guesses about exactly where the line breaks are when I fixed the format of your code to make it readable.

[Walter Roberson]

Yes, {stats.Area} and {states.Solidity}

[Mohamed Nasr]

Solidity error was solved thanks alot but there still another error I copied all my code to see it This is the last error

[Mohamed Nasr]

Undefined operator '>' for input arguments of type 'cell'.

Error in Tumor (line 10) high_dense_area = denisty > 0.5 ; %Area of tumor

[Walter Roberson]

[stats.Area] and [stats.Solidity]

[Mohamed Nasr]

clear 
clc
img=imread('brain1.jpg');
img1=rgb2gray(img);
bw=imbinarize(img1 , 0.7);  %Thresholding value  if less than 0.7 color is black ,if morr than 0.7 color is white
label=logical(bw); %area of tumor
stats =regionprops(label,'Solidity','Area'); %healthy region
denisty={stats.Solidity};
area={stats.Area};
high_dense_area = denisty > 0.5  ;  %Area of tumor
max_area=max(area(high_dense_area));    %max area 
tumor_label=find(area==max_area); %place of tumor
tumor = ismember(label,tumor_label);
s=strel('square',5);
tumor=imdilate(tumor,s);
figure;
subplot(1,3,1);imshow(img);title('Brain' );
subplot(1,3,2);imshow(tumor);title('Tumor alone' );

sorry I paste the code from mobile now this is the code as matlab

[stats.Area] and [stats.Solidity] are Capital Letters now but still have the next error

Undefined operator '>' for input arguments of type 'cell'.

Error in Tumor (line 10)
high_dense_area = denisty > 0.5  ;  %Area of tumor

[Walter Roberson]

You did not change the { } to [ ] in assigning to denisty and area

 denisty = [stats.Solidity];
 area = [stats.Area];

[Mohamed Nasr]

thank you the code without any errors now but the result for processing this brain tumor image is a black image

[Mohamed Nasr]

this is the correct result as it assumed to appear on the right picture

[Walter Roberson]

Please attach the brain image by itself so we can test.

[Mohamed Nasr]

the original image

Answer 2

[Mohamed Nasr]

clear all 
clc
close all
img=imread('brain2.jpg');
bw=imbinarize(img , 0.9);  %Thresholding value  if less than 0.7 color is black ,if morr than 0.7 color is white
label=logical(bw); %area of tumor
stats =regionprops(label,'Solidity','Area'); %healthy region
denisty=[stats.Solidity];
area=[stats.Area];
high_dense_area = denisty > 0.5 ;  %Area of tumor
max_area=max(area(high_dense_area));    %max area 
tumor_label=find(area==max_area); %place of tumor
tumor = ismember(label,tumor_label);
s=strel('square',4);
tumor=imdilate(tumor,s);

figure;
subplot(1,3,1);imshow(img,[ ]);title('Brain' );
subplot(1,3,2);imshow(tumor,[ ]);title('Tumor alone' );
[B,L]=bwboundaries(tumor,'noholes');
subplot(1,3,3);imshow(img,[])
hold on 
for i=1:length(B)
    Plot(B{i}(:,2),B{i}(:,1),'Y','lenewidth',1.45)
end
title('Detected image')
hold off

this is my code dosenot run correctly what i miss in this code and it is one of optimal image attach the vidio with it

https://www.youtube.com/watch?v=UeFRo7uALhM&fbclid=IwAR1JmjjnCB3rnLYSiWwIQ1inxVJPA8WpwVUCJ-ncEy5MpKzWBHHe9jEWVjs

[Walter Roberson]

You have

label=logical(bw);

The maximum possible value for that array is 1, corresponding to true.

You calculate tumor_label as the indices of (all of) the areas that have (the same) maximum area. It will not usually be 1.

You have

tumor = ismember(label, tumor_label)

remember that label is a bunch of true and false values, so it is likely that none of them are going to equal the index(es) you found.

You should consider

label = bwlabel(logical(bw));

[Mohamed Nasr]

I change label=ligical(bw); To label = bwlabel(logical(bw)); And i have this error message

[Mohamed Nasr]

Expected input number 1, BW, to be two-dimensional.

Error in bwlabel (line 65)

validateattributes(BW, {'logical' 'numeric'}, {'real', '2d', 'nonsparse'}, ...

Error in tumor2 (line 6)

label = bwlabel(logical(bw)); %area of tumor

[Mohamed Nasr]

its work on only one picture even after the last change to the code

bw=imbinarize(img,0.9);  %Thresholding value  if less than 0.7 color is black ,if morr than 0.7 color is white

if i change 0.9 to 0.7 or less or more it doesnt work at all on any picture

i didnt get clearly what you mean but i think you explain that logical value should be only one

of two values true or false 1 or 0 yes or no

and that make my ability to but values more than 1 is none

so how could i solve this mess on my code i have to explain this code with many other issues

in the university to my prof and many things depend on it when it work on my reseach

i realy want the code work correctly on all tumor photos and i want understand it

[Mohamed Nasr]

https://github.com/Tes3awy/MatLab-Tutorials

this link contain all the original photos that was tested by the programer on the video

you should found

Brain MRI Images for use.rar

And Thank you Walter Roberson for Everything

[Mohamed Nasr]

bw=imbinarize(img,0.7);  %Thresholding value  if less than 0.7 color is black ,if morr than 0.7 color is white

I change (img,0.9) to (img,0.7)

and change denisty to 0.2

high_dense_area = denisty > 0.2 ;  %Area of tumor

and i got the results for 4 photos work correctly

[Mohamed Nasr]

5 photos

[Mohamed Nasr]

[Mohamed Nasr]

[Walter Roberson]

Is there still and active question here?

[Mohamed Nasr]

Yes I still dont know why this code didnt work with all brain tumor images 20 image only 6 work and other images when I run the code I got this error message

[Mohamed Nasr]

Expected input number 1, BW, to be two-dimensional. Error in bwlabel (line 65) validateattributes(BW, {'logical' 'numeric'}, {'real', '2d', 'nonsparse'}, ... Error in tumor2 (line 6) label = bwlabel(logical(bw)); %area of tumor

[Walter Roberson]

Code attached.

Answer 3

[Mohamed Nasr]

Thanks alot really for your patient and your support