extracting HOG features from .mat files and usage of "fitcecoc"

4 views (last 30 days)
I have '.mat files' for different objects and I want to extract HOG features from the mat files, and I want to apply those features on "fitcecoc" SVM one vs one classifier. I have written a code but giving the error like this:
CS=[16,16];
traindb='D:\matprog\matfiles\trainfiles';
filePattern=fullfile(traindb, '*.mat');
matFiles = dir(filePattern);
for i = 1:length(matFiles)
baseFileName = fullfile(traindb, matFiles(i).name);
ref_files{i} = load(baseFileName);
trainingfeatures(i,:)=extractHogfeatures(ref_files,'cellsize',CS);
end
traininglabels=traindb.Labels;
classifier=fitcecoc(trainingfeatures,traininglabels);
ERROR:
Dot indexing is not supported for variables of this type.
how to give labels and is it correct way to follow?

Accepted Answer

Pratyush Roy
Pratyush Roy on 2 Nov 2021
Hi Santhosh,
The traindb variable in the code refers to a string and not a struct. Hence the dot indexing does not work in this case.
As a workaround, you can use Image DataStore to store the image data, since it supports dot indexing.
Hope this helps!

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by