boxlabelDatastore for 2 or more classes

Hello everyone! I need some hel with a custom multiclass object detector. I'm new in matlab programming and I can't figure how to use boxlabeldatastore for 2 classes. I'm using a Tutorial video post by matlab but they only detect 1 class. I'd really appreciate some help

here's the code for the boxlabeldatastore

rng(0)

shuffledIndices = randperm(height(fileNames{1}));

idx = floor(0.7 * height(fileNames{1}));

trainingIdx = 1:idx;

TrainingSelectedIndices = shuffledIndices(trainingIdx);

trainingDataTbl = fileNames{1}(TrainingSelectedIndices,:);

trainingDataTblBX = labelData{1}(TrainingSelectedIndices,:);

imdsTrain = imageDatastore(trainingDataTbl);

bldBigRedBuoy = trainingDataTblBX(:,1);

bldBigGreenBuoy = trainingDataTblBX(:,2);

bldsTrain = boxLabelDatastore(bldBigRedBuoy,bldBigGreenBuoy);

bldsTrain = boxLabelDatastore(bldBigRedBuoy,bldBigGreenBuoy);

bldsTrain seems only use "bldBigRedBuoy"

Answer 1

[Harsh]

Hi @Isaac,

I believe bldsTrain has data from both the bldBigRedBuoy and bldBigGreenBuoy. The values for bldBigGreenBuoy are stacked at the bottom of bldBigRedBuoy. You can verify that by checking the size of bldBigRedBuoy and bldBigGreenBuoy. In the example above, it should be 183.

Check the documentation of boxlabeldatastore for more clarity -

https://in.mathworks.com/help/releases/R2022b/vision/ref/boxlabeldatastore.html?s_tid=doc_ta

Please let me know if this answers your query !