Hello,
im using Unet to perform semantic segmentation (I want to segment liver metastasis). I want to weight 'more' the pixels of the metastasis respect to the background but I can't manage to do it...
Code for creating unet architecture:
lgraph = unetLayers(imageSize, numClasses, 'EncoderDepth', 4);
How can I change the 'classWeights' in lgraph.Layers(end).pixelClassificationLayer in order to do this??
If, for example, I do this:
lgraph.Layers(end).pixelClassificationLayer.classWeights = [2, 0.5];
I receive an error telling me that i have first to put the 'labels' to the 'classes' options in lgraph.Layers(end), but if i do this:
lgraph.Layers(end) = {'metastasis', 'background'};
I receive an error telling that that layer is in 'read only' mode....
ANSWER
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Hi, The unetLayers object in MATLAB is in read only mode and we cannot change the properties of layers as such. You may remove the last layer which is the Segmentation-Layer and can add a new Segmentation-Layer with the properties that are mentioned. Following Code will help. % Last Layer Name is 'Segmentation-Layer'
% for checking layer name use :- lgraph.Layers
lgraph = removeLayers(lgraph,'Segmentation-Layer');
layerlast = pixelClassificationLayer('Classes',{'metastatis','background'},'ClassWeights',[2,0.5],'Name','New_segmentation_Layer');
layer_to_add = [layerlast];
lgraph = addLayers(lgraph,layer_to_add);
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Matlabsolutions.com provide latest MatLab Homework Help,MatLab Assignment Help for students, engineers and researchers in Multiple Branches like ECE, EEE, CSE, Mechanical, Civil with 100% output.Matlab Code for B.E, B.Tech,M.E,M.Tech, Ph.D. Scholars with 100% privacy guaranteed. Get MATLAB projects with source code for your learning and research.
Hi,
The unetLayers object in MATLAB is in read only mode and we cannot change the properties of layers as such. You may remove the last layer which is the Segmentation-Layer and can add a new Segmentation-Layer with the properties that are mentioned.
Following Code will help.
% Last Layer Name is 'Segmentation-Layer' % for checking layer name use :- lgraph.Layers lgraph = removeLayers(lgraph,'Segmentation-Layer'); layerlast = pixelClassificationLayer('Classes',{'metastatis','background'},'ClassWeights',[2,0.5],'Name','New_segmentation_Layer'); layer_to_add = [layerlast]; lgraph = addLayers(lgraph,layer_to_add);
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