why i cannot get full database?

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RACHEL LYN JAHIRIN
回答： Govind KM 2023-6-7
hi matlab community, ask shown in figure below, the matlab database did not show full database . it just shown []. Can someone help me? this is for my FYP. Can see coding attach. I really appreciate your help!
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RACHEL LYN JAHIRIN
RACHEL LYN JAHIRIN 2023-6-6
i expect to get the number of distortion classes. which is 1-jpeg, 2-jp2k, 3-whitenoise, 4-gblur, 5-fastfading.
RACHEL LYN JAHIRIN
RACHEL LYN JAHIRIN 2023-6-6
can see the attach file. the dmos.mat file

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回答（1 个）

Govind KM
Govind KM 2023-6-7
Hi Rachel,
I am assuming that you want the third column of the table to be filled with the distortion class as per your code. However, you have filled the first column correctly in your code by adding the previous index value to the row index, but you haven't done the same for when you assign values to the third column. So the corrected code would be as follows.
load('dmos.mat');
FYPdatabase=cell(numel(dmos),4);
FYPdatabase(:,2)=num2cell(dmos);
addpath('C:\Users\User\Desktop\LIVE database\databaserelease2\fastfading');
for i=1:174
A=imread(sprintf('img%d.bmp',i));
A1=rgb2gray(A);
A2=double(A1);
FYPdatabase{i,1}=A2;
FYPdatabase{i,3}=5;
end
addpath('C:\Users\User\Desktop\LIVE database\databaserelease2\gblur');
for i=1:174
A=imread(sprintf('img%d.bmp',i));
A1=rgb2gray(A);
A2=double(A1);
FYPdatabase{174+i,1}=A2;
FYPdatabase{174+i,3}=4; %Corrected row index
end
addpath('C:\Users\User\Desktop\LIVE database\databaserelease2\jp2k');
for i=1:227
A=imread(sprintf('img%d.bmp',i));
A1=rgb2gray(A);
A2=double(A1);
FYPdatabase{348+i,1}=A2;
FYPdatabase{348+i,3}=2; %Corrected row index
end
addpath('C:\Users\User\Desktop\LIVE database\databaserelease2\jpeg');
for i=1:233
A=imread(sprintf('img%d.bmp',i));
A1=rgb2gray(A);
A2=double(A1);
FYPdatabase{575+i,1}=A2;
FYPdatabase{575+i,3}=1; %Corrected row index
end
addpath('C:\Users\User\Desktop\LIVE database\databaserelease2\wn');
for i=1:174
A=imread(sprintf('img%d.bmp',i));
A1=rgb2gray(A);
A2=double(A1);
FYPdatabase{808+i,1}=A2;
FYPdatabase{808+i,3}=3; %Corrected row index
end

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