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How to use radon transform to find face image's orientation?
Is it possible to find out the orientation of a face by applying radon transform I mean to tell whether a face is looking fronta...

plus de 9 ans il y a | 1 réponse | 0

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Question

scatter plot of neural network
hello i want to plot my neural network out of patternent function <</matlabcentral/answers/uploaded_files/76699/1.png>> to...

plus de 9 ans il y a | 1 réponse | 0

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Question

scatter plot of first n principal components
Hello, I know how to plot a scatter plot of the first 2 principal components. Can someone tell me how to expand the scatter plot...

plus de 9 ans il y a | 1 réponse | 0

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Question

how to plot roc for multiclass problems ?
Hi I have been using plot roc function in the neural network.But that function plots roc per class in the classification tasks. ...

plus de 9 ans il y a | 1 réponse | 0

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Question

3d surface plot
Hello I wan to plot a surface plot like the image given below. The plot must have recognition rate from 0-100 in the z axis . Hi...

plus de 9 ans il y a | 1 réponse | 0

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Question

Local mean and variance of an image for normalisation
Hello i want to normalise my image of size 112x98 using a concept of local mean and local variance.I wan to first convert my ima...

plus de 9 ans il y a | 1 réponse | 0

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Question

neural network input error
Hello I want to train my neural network multiple times and track the validation set error. For the following i am doing this:...

presque 10 ans il y a | 1 réponse | 0

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Question

Eigen faces for face recognition
Hi I want to do face recognition or classification using the eigenface method. I am using the neural network as a classifier . ...

environ 10 ans il y a | 1 réponse | 0

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Question

Using sequentialfs to maximise mutual information for feature selection
I want to maximise mutual information (objective function) <</matlabcentral/answers/uploaded_files/60785/1.png>> ...

environ 10 ans il y a | 1 réponse | 0

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Question

plotting CLASSIFICATION confusion matrix
Hello I want to plot the classification confusion matrix, from the output variables as obtaind from the defualt matlab function ...

environ 10 ans il y a | 1 réponse | 0

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Question

How to get validation test and training errors of a neural network?
I have created and trained a neural network using the following code .I want to know how to get the training testing and validat...

plus de 10 ans il y a | 2 réponses | 1

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Question

is it possible to change the input to the bais of a neural network?
I have recently found out that through functions like getwb and setwb we can extract and also set to a new network the weights ...

plus de 10 ans il y a | 1 réponse | 0

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Question

how to store weights after neural network training ?
hello after I have trained my neural netowrk completely using the gui and tested its performance through error in the testing an...

plus de 10 ans il y a | 1 réponse | 0

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Question

how does matlab splits the data set into 3 sets for nnet ?
Hello The default function for mat lab nn toolbox is diverand which can also be seen in the GUI of nnstart. It splits the data s...

plus de 10 ans il y a | 1 réponse | 0

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Question

problem using pca eigenfaces
Hello I am doing a face recognition using pca and eigenfaces using a neural network. this is my code here m is a 10344x...

plus de 10 ans il y a | 1 réponse | 0

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Question

is my neural network properly trained ?
Hello i have a feature vector of 12455x400 matrix and out put target of 40x400 matrix .I am training using patternent and fucnti...

plus de 10 ans il y a | 1 réponse | 0

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Question

concatenate all cells in a celll array
hello i have a cell array 7x7 Columns 1 through 6 [256x1 double] [256x1 double] [256x1 double] [256x1 double...

plus de 10 ans il y a | 2 réponses | 0

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Question

how to assign weights to specific blocks of an image?
I want to perform face recongition using LBP feautres.In th eoriginal paper it is mentioned that some regions have mre informat...

plus de 10 ans il y a | 1 réponse | 0

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Question

improve pattern recognition by neural netowrk
hello i have a feature vector localbinary pattern histogram as Nx400 or 400 samples .I have normalised each of the columns of th...

plus de 10 ans il y a | 1 réponse | 0

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Question

is it important to normalise the input to a neural network before training
I have a feature vector of the size 10000x400(400 samples) and target matrix is 40x400(40 classes).The input feature vecotr for ...

plus de 10 ans il y a | 2 réponses | 0

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Question

how to concatenate structure fields
Hello I have a structure s(i).f(j).d where i=1:40 and j=1:10.I want to concantenate all the fields in to one single matrix. for ...

plus de 10 ans il y a | 2 réponses | 0

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Question

how to create a matrix of concatenated images
Hello i have 40 subfolders in a folder .each folder contains 10 images of a particular individual.I have created a image set of ...

plus de 10 ans il y a | 1 réponse | 0

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Question

howto divide an image into K*K windows for LBP
hello I have an image which is 112 x 92. I want to divide the image into 7x7 blocks and apply generate LBP pattern for each bloc...

plus de 10 ans il y a | 1 réponse | 0

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Question

How to train a neural network with genetic algorithm and back propagation?
Hello I want to train my neural network using a hybrid model of backpropagation and Genetic algorithm . Is it possible to use ...

plus de 10 ans il y a | 1 réponse | 0

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Question

how to train a bag of words for pattern recognition problems in neural network
hello I am using bag of words concept to encode images as 500 visual words to represent as feature vector. I was partitioning...

plus de 10 ans il y a | 1 réponse | 0

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Question

dir returning different values
Hello I have a flder in which there are 40 subfolders=[s1 s2...s40]. But when I am wrting dir in the folder location in the comm...

plus de 10 ans il y a | 1 réponse | 0

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Question

how to loop through subfolders and apply a particular function
Hello I have 40 subfolders in folder.And each of these subfolder contrains 10 images in pgm format. Suppose I want to aply norma...

plus de 10 ans il y a | 2 réponses | 0

2

réponses

Question

normalise all images in an imageset
Hello I want to normalise all the images in an image set using standard deviation and zero mean. for that i ma using my normalis...

plus de 10 ans il y a | 1 réponse | 0

1

réponse

Question

improve accuracy in pattern recognition using neural network
Hello I am trying to build a face recognition system using neural network. For that I am using SURF features as a feature vector...

plus de 10 ans il y a | 1 réponse | 0

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Question

how to display a montage of images from a dataset
Hello I am using the AT&T standard database for face recognition. I want to display a montage of just a particular face of one i...

plus de 10 ans il y a | 1 réponse | 0

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