MATLAB: How i recognize a scene using alex net??or any other algorithm

cnnDeep Learning Toolboxdigital image processingmachine learning

Objects are recognize using AlexNet but how we Recognize scene on The basis of these objects Recognition??

Best Answer

Train the network on scenes instead of objects. Whatever takes up the majoirty of the image and has the most dominant features you are extracting is what you will learn. Alexnet was trained on images that are 227x227 that take up the majority of the frame. Remove that object and you will learn something else assuming there are enough consitetent features and your data set is large enough.

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MATLAB: AlexNet for Semantic segmentation

Hi Raza Ali,

You can refer to the following implementation

https://www.mathworks.com/matlabcentral/fileexchange/65851-semantic-segmentation-using-fcn-alexnet

Hope it helps.

MATLAB: Transfer Learning Using AlexNet

A really simple example is as follows:

vid = videoinput('winvideo', 1);
set(vid, 'ReturnedColorSpace', 'RGB');
img = getsnapshot(vid);
labelMachine(img,net,classifier) % net and classifier are from your transfer learning on alexnet

function label = labelMachine(img,net,classifier)
  featureLayer = 'fc7';
  % Pre-process the image as required for the CNN
  img = imresize(img, [227 227]);
  % Extract image features using the CNN
  imageFeatures = activations(net, img, featureLayer);
  % Make a prediction using the classifier
  label = char(predict(classifier, imageFeatures));
end

I did a project that used a webcam and alex net transfer learning which can be found here if you need further referances.

Best Answer

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