Why do I receive this error message?

Hello.

I tried to run the code via this link https://github.com/yifanw90/Zeyde_superes and I get errors below, can anyone help resolve this.

    % Training [0 x 1000] dictionary on 0 vectors using K-SVD
Error using ksvd (line 386)
Number of training signals is smaller than number of atoms to train

Error in learn_dict (line 49)
[conf.dict_lores, gamma] = ksvd(ksvd_conf); % , '');

Error in Example (line 25)
conf = learn_dict(conf, load_images(...

>>

[Walter Roberson]

Your data is empty.

[Chidiebere Ike]

Thanks Walter for your response. I observed that too. I entered some images in Data (Test and Training) and still got errors below. I have attached a link for the same file with images in Data. What could be the reason for this error? Please guide me.

https://drive.google.com/drive/folders/1-NKqh7dXirm9OqzqdP_mJSoJzyJp4TSN?usp=sharing

Training [0 x 1000] dictionary on 0 vectors using K-SVD
Error using ksvd (line 386)
Number of training signals is smaller than number of atoms to train
Error in learn_dict (line 49)
[conf.dict_lores, gamma] = ksvd(ksvd_conf); % , '');
Error in Example (line 25)
conf = learn_dict(conf, load_images(...

Thank you

[Walter Roberson]

The code uses MS Windows folder separator. I had to change from \ to / to get it to work on my Mac.

conf = learn_dict(conf, load_images(...
    glob('./CVPR08-SR/Data/Training', '*.bmp') ...
));

I also had to change the addpath to

addpath(fullfile(p, 'ksvdbox')); % K-SVD dictionary training algorithm
addpath(fullfile(p, 'ompbox')); % Orthogonal Matching Pursuit algorithm

[Chidiebere Ike]

Thanks Walter. I made all corrections as instructed and still got the errors stated below. I ran exactly the same Drive code I sent earlier. This is what I did:

if true
  % p = pwd;
addpath(fullfile(p, 'ksvdbox')); % K-SVD dictionary training algorithm
addpath(fullfile(p, 'ompbox')); % Orthogonal Matching Pursuit algorithm
% addpath(fullfile(p, '../CVPR08-SR'));
mat_file = 'conf.mat';
%%Simulation settings
conf.scale = 3; % scale-up factor
conf.level = 1; % # of scale-ups to perform
conf.window = [3 3]; % low-res. window size
conf.border = [1 1]; % border of the image (to ignore)
% High-pass filters for feature extraction (defined for upsampled low-res.)
conf.upsample_factor = 3; % upsample low-res. into mid-res.
O = zeros(1, conf.upsample_factor-1);
G = [1 O -1]; % Gradient
L = [1 O -2 O 1]/2; % Laplacian
conf.filters = {G, G.', L, L.'}; % 2D versions
conf.interpolate_kernel = 'bicubic';
conf.overlap = [1 1]; % partial overlap (for faster training)
      conf = learn_dict(conf, load_images(...            
          glob('./CVPR08-SR/Data/Training', '*.bmp')));
conf.overlap = conf.window - [1 1]; % full overlap scheme (for better reconstruction)
save(mat_file, 'conf');
end

This is the error I got:

if true
  % code>> clear all
>> Example
Training [30 x 1000] dictionary on 104788 vectors using K-SVD
Attempt to execute SCRIPT ompmex as a function:
/Users/ikechidiebere/Downloads/Zeyde_superes-master/ompbox/private/ompmex.m 
Error in omp (line 162)
gamma = ompmex(D,X,DtX,G,T,sparse_gamma,msgdelta,profile);
Error in ksvd>sparsecode (line 562)
Gamma = ompfunc(D,data,G,thresh,ompparams{:});
Error in ksvd (line 436)
Gamma = sparsecode(data,D,XtX,G,thresh);
Error in learn_dict (line 49)
[conf.dict_lores, gamma] = ksvd(ksvd_conf); % , '');
Error in Example (line 25)
conf = learn_dict(conf, load_images(...

>> end

What could be the reason for this?

Thank you

[Walter Roberson]

here = pwd;
cd /Users/ikechidiebere/Downloads/Zeyde_superes-master/ompbox/private
make
cd /Users/ikechidiebere/Downloads/Zeyde_superes-master/ksvdbox/private
make
cd(here);

Example

[Chidiebere Ike]

Thanks for your response. I am sorry I don't understand your message sir. Can you please make it clear. Thanks

[Walter Roberson]

That is a sequence of commands you should execute.

The problem you have is that ompbox and ksvdbox have code that needs to be compiled; you have to cd to the appropriate directory and use the command "make" to compile the code.

[Chidiebere Ike]

 I got this error. 

if true
  % >> here = pwd;
>> cd /Users/ikechidiebere/Downloads/Zeyde_superes-master/ompbox/private
>> make
Compiling ompmex...
Warning: Xcode appears to be installed, but it has not been configured.  Run "osascript -e 'do
shell script "xcode-select -switch /Applications/Xcode.app" with administrator privileges'" to
configure Xcode.  You must be an administrator of this computer to complete this action.
> In make (line 37) 
Error using mex
No supported compiler or SDK was found. For options, visit
https://www.mathworks.com/support/compilers.
Error in make (line 37)
mex('ompmex.c', ompsources{:},compile_params{:}); 
0:92: execution error: xcode-select: error: invalid developer directory '/Applications/Xcode.app' (1)
ans =
   1
>> cd /Users/ikechidiebere/Downloads/Zeyde_superes-master/ksvdbox/private
>> make
Compiling addtocols.c...
Warning: Xcode appears to be installed, but it has not been configured.  Run "osascript -e 'do
shell script "xcode-select -switch /Applications/Xcode.app" with administrator privileges'" to
configure Xcode.  You must be an administrator of this computer to complete this action.
> In make (line 39) 
Error using mex
No supported compiler or SDK was found. For options, visit
https://www.mathworks.com/support/compilers.
Error in make (line 39)
mex(sourcefiles{i}{:},compile_params{:});
0:92: execution error: xcode-select: error: invalid developer directory '/Applications/Xcode.app' (1)
ans =
   1
>> cd(here);
>> Example
Warning: Name is nonexistent or not a directory:
/Users/ikechidiebere/Downloads/Zeyde_superes-master/ompbox/private/ksvdbox 
> In path (line 109)
In addpath (line 94)
In Example (line 5) 
Warning: Name is nonexistent or not a directory:
/Users/ikechidiebere/Downloads/Zeyde_superes-master/ompbox/private/ompbox 
> In path (line 109)
In addpath (line 94)
In Example (line 6) 
Training [0 x 1000] dictionary on 0 vectors using K-SVD
Error using ksvd (line 386)
Number of training signals is smaller than number of atoms to train
Error in learn_dict (line 49)
[conf.dict_lores, gamma] = ksvd(ksvd_conf); % , '');
Error in Example (line 25)
      conf = learn_dict(conf, load_images(...
>> 
end

What could be the issue here? Please guide me

Thanks

[Chidiebere Ike]

I am using macOS Mojave, version 10.14.1 and my version of Matlab is Matlab_R2017b

[Walter Roberson]

Which MacOS are you using?

[Chidiebere Ike]

macOS Mojave, version 10.14.1

[Walter Roberson]

That version of MATLAB did not support that operating system.

[Chidiebere Ike]

Please, which of these version of Matlab supports my operating system?

MATLAB 9.4(R2018a) or MATLAB 9.5(R2018b)

Thanks

[madhan ravi]

system requirements - mac

[Chidiebere Ike]

I have successfully compiled the ompbox and ksvdbox on 2017b Matlab version using Xcode 10 (new release). I still have errors stated below:

if true
  % >> Error using imwrite (line 467)
Unable to open file "Set5/results/baby_GT[1-Original].bmp" for writing.  You might not
have write permission.
Error in Example (line 57)
      imwrite(result(:, :, j), conf.results{i}{j});
>> 
end

[madhan ravi]

Unable to open file "Set5/results/baby_GT[1-Original].bmp" for writing. You might not have write permission .

[Walter Roberson]

Directory Set5 or Set5/results might not exist relative to the directory of execution, or directory Set5/results might be one you do not have permission to write into.

[Chidiebere Ike]

Solved. Thanks so much. I appreciate