I want to use labeled images from Image labeling in semantic segmentation,

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Rus Gabriela
Rus Gabriela 2022-1-4
回答： yanqi liu 2022-1-8
Hello! I try to use my labeled images from Image Labeler tool, to train a network for semantic segmentation, but I have problems because those images are PNG. I have this error: Pixel label image must have 3 channels when RGB-triplet pixel label IDs are specified. My question is: Can I use these images for semantic segmentation or not? And if the answer is yes, how can I manage these images to be suitable for my porpose?

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yanqi liu
yanqi liu 2022-1-8
yes，sir，may be modify read image function，make it to rgb，such as
trainingImages = imageDatastore('train',...
'IncludeSubfolders',true,...
'LabelSource','foldernames','ReadFcn',@data_preporcess);
and in read function
function data = data_preporcess(file)
data = imread(file);
if ndims(data) == 2
data = cat(3, data, data, data);
end

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