Image segmentation on MATLAB with Alexnet/Googlenet etc





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I try to segment image by using Deep learning on MATLAB. I have read this article https://www.mathworks.com/help/deeplearning/ref/alexnet.html
However, this guideline is only for a given images with labels are in the path (folder name).



I want to do something like that: I have two images folders - orignal images and the label images (segmented images). How can I use with alexnet or googlenet in this case?



Sorry I have no code here because I still cannot imagine how to do :(
Anyone have experience to do this task, please write out the guide!



Here is my example - but error, cannot run:



clc;
clearvars;
close all;

dataSetDir = fullfile('C:Data');
imageDir=fullfile(dataSetDir, 'orinals');
labelDir=fullfile(dataSetDir,'labels');

imds=imageDatastore(imageDir);
imdsl=imageDatastore(labelDir);

classNames=["skin","background"];
labelIDs=[1 0];
pxds=pixelLabelDatastore(labelDir,classNames,labelIDs);
I=read(imds);
C=read(pxds);
I=imresize(I,5);
L=imresize(uint8(C),5);

alnet = alexnet;
layers = alnet.Layers;
opts = trainingOptions('sgdm', ...
'MiniBatchSize',10, ...
'MaxEpochs',6, ...
'Shuffle','every-epoch', ...
'InitialLearnRate',1e-4, ...
'ValidationFrequency',3, ...
'Verbose',false, ...
'Plots','training-progress');

trainingData=pixelLabelImageSource(imds,pxds);
tbl=countEachLabel(trainingData);
totalNumberOfPixels=sum(tbl.PixelCount);
frequency=tbl.PixelCount/totalNumberOfPixels;
classWeights=1./frequency;
layers(end)=pixelClassificationLayer('ClassNames',tbl.Name,'ClassWeights',classWeights);

net=trainNetwork(trainingData,layers,opts);
save skincnn.mat;









share|improve this question























  • It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

    – Yuval Harpaz
    Jan 3 at 14:52











  • You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

    – Alex Taylor
    Jan 3 at 19:50




















0















I try to segment image by using Deep learning on MATLAB. I have read this article https://www.mathworks.com/help/deeplearning/ref/alexnet.html
However, this guideline is only for a given images with labels are in the path (folder name).



I want to do something like that: I have two images folders - orignal images and the label images (segmented images). How can I use with alexnet or googlenet in this case?



Sorry I have no code here because I still cannot imagine how to do :(
Anyone have experience to do this task, please write out the guide!



Here is my example - but error, cannot run:



clc;
clearvars;
close all;

dataSetDir = fullfile('C:Data');
imageDir=fullfile(dataSetDir, 'orinals');
labelDir=fullfile(dataSetDir,'labels');

imds=imageDatastore(imageDir);
imdsl=imageDatastore(labelDir);

classNames=["skin","background"];
labelIDs=[1 0];
pxds=pixelLabelDatastore(labelDir,classNames,labelIDs);
I=read(imds);
C=read(pxds);
I=imresize(I,5);
L=imresize(uint8(C),5);

alnet = alexnet;
layers = alnet.Layers;
opts = trainingOptions('sgdm', ...
'MiniBatchSize',10, ...
'MaxEpochs',6, ...
'Shuffle','every-epoch', ...
'InitialLearnRate',1e-4, ...
'ValidationFrequency',3, ...
'Verbose',false, ...
'Plots','training-progress');

trainingData=pixelLabelImageSource(imds,pxds);
tbl=countEachLabel(trainingData);
totalNumberOfPixels=sum(tbl.PixelCount);
frequency=tbl.PixelCount/totalNumberOfPixels;
classWeights=1./frequency;
layers(end)=pixelClassificationLayer('ClassNames',tbl.Name,'ClassWeights',classWeights);

net=trainNetwork(trainingData,layers,opts);
save skincnn.mat;









share|improve this question























  • It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

    – Yuval Harpaz
    Jan 3 at 14:52











  • You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

    – Alex Taylor
    Jan 3 at 19:50
















0












0








0








I try to segment image by using Deep learning on MATLAB. I have read this article https://www.mathworks.com/help/deeplearning/ref/alexnet.html
However, this guideline is only for a given images with labels are in the path (folder name).



I want to do something like that: I have two images folders - orignal images and the label images (segmented images). How can I use with alexnet or googlenet in this case?



Sorry I have no code here because I still cannot imagine how to do :(
Anyone have experience to do this task, please write out the guide!



Here is my example - but error, cannot run:



clc;
clearvars;
close all;

dataSetDir = fullfile('C:Data');
imageDir=fullfile(dataSetDir, 'orinals');
labelDir=fullfile(dataSetDir,'labels');

imds=imageDatastore(imageDir);
imdsl=imageDatastore(labelDir);

classNames=["skin","background"];
labelIDs=[1 0];
pxds=pixelLabelDatastore(labelDir,classNames,labelIDs);
I=read(imds);
C=read(pxds);
I=imresize(I,5);
L=imresize(uint8(C),5);

alnet = alexnet;
layers = alnet.Layers;
opts = trainingOptions('sgdm', ...
'MiniBatchSize',10, ...
'MaxEpochs',6, ...
'Shuffle','every-epoch', ...
'InitialLearnRate',1e-4, ...
'ValidationFrequency',3, ...
'Verbose',false, ...
'Plots','training-progress');

trainingData=pixelLabelImageSource(imds,pxds);
tbl=countEachLabel(trainingData);
totalNumberOfPixels=sum(tbl.PixelCount);
frequency=tbl.PixelCount/totalNumberOfPixels;
classWeights=1./frequency;
layers(end)=pixelClassificationLayer('ClassNames',tbl.Name,'ClassWeights',classWeights);

net=trainNetwork(trainingData,layers,opts);
save skincnn.mat;









share|improve this question














I try to segment image by using Deep learning on MATLAB. I have read this article https://www.mathworks.com/help/deeplearning/ref/alexnet.html
However, this guideline is only for a given images with labels are in the path (folder name).



I want to do something like that: I have two images folders - orignal images and the label images (segmented images). How can I use with alexnet or googlenet in this case?



Sorry I have no code here because I still cannot imagine how to do :(
Anyone have experience to do this task, please write out the guide!



Here is my example - but error, cannot run:



clc;
clearvars;
close all;

dataSetDir = fullfile('C:Data');
imageDir=fullfile(dataSetDir, 'orinals');
labelDir=fullfile(dataSetDir,'labels');

imds=imageDatastore(imageDir);
imdsl=imageDatastore(labelDir);

classNames=["skin","background"];
labelIDs=[1 0];
pxds=pixelLabelDatastore(labelDir,classNames,labelIDs);
I=read(imds);
C=read(pxds);
I=imresize(I,5);
L=imresize(uint8(C),5);

alnet = alexnet;
layers = alnet.Layers;
opts = trainingOptions('sgdm', ...
'MiniBatchSize',10, ...
'MaxEpochs',6, ...
'Shuffle','every-epoch', ...
'InitialLearnRate',1e-4, ...
'ValidationFrequency',3, ...
'Verbose',false, ...
'Plots','training-progress');

trainingData=pixelLabelImageSource(imds,pxds);
tbl=countEachLabel(trainingData);
totalNumberOfPixels=sum(tbl.PixelCount);
frequency=tbl.PixelCount/totalNumberOfPixels;
classWeights=1./frequency;
layers(end)=pixelClassificationLayer('ClassNames',tbl.Name,'ClassWeights',classWeights);

net=trainNetwork(trainingData,layers,opts);
save skincnn.mat;






matlab deep-learning






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asked Jan 3 at 13:05









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  • It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

    – Yuval Harpaz
    Jan 3 at 14:52











  • You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

    – Alex Taylor
    Jan 3 at 19:50





















  • It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

    – Yuval Harpaz
    Jan 3 at 14:52











  • You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

    – Alex Taylor
    Jan 3 at 19:50



















It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

– Yuval Harpaz
Jan 3 at 14:52





It is unclear what you are trying to achieve, are you trying to cut images? According to what criteria?

– Yuval Harpaz
Jan 3 at 14:52













You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

– Alex Taylor
Jan 3 at 19:50







You should read this paper: people.eecs.berkeley.edu/~jonlong/long_shelhamer_fcn.pdf for ideas on how to use a pre-trained network in the context of a semantic segmentation problem. An implementation based on vgg16 is in the Computer Vision toolbox: mathworks.com/help/vision/ref/fcnlayers.html. To start with, you are going to want an encoder/decoder structure to your network. blog.qure.ai/notes/semantic-segmentation-deep-learning-review

– Alex Taylor
Jan 3 at 19:50














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