# Newman

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**Content Feed**

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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...

oltre 5 anni ago | 1 answer | 0

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answerQuestion

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...

oltre 5 anni ago | 0 answers | 0

### 0

answersQuestion

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...

oltre 5 anni ago | 1 answer | 0

### 1

answerQuestion

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. ...

oltre 5 anni ago | 0 answers | 0

### 0

answersQuestion

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...

oltre 5 anni ago | 0 answers | 0

### 0

answersQuestion

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...

oltre 5 anni ago | 0 answers | 0

### 0

answersQuestion

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:...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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 . ...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

Using sequentialfs to maximise mutual information for feature selection

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

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

plotting CLASSIFICATION confusion matrix

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

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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...

circa 6 anni ago | 2 answers | 1

### 2

answersQuestion

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 ...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 2 answers | 0

### 2

answersQuestion

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...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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 ...

circa 6 anni ago | 2 answers | 0

### 2

answersQuestion

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 ...

circa 6 anni ago | 2 answers | 0

### 2

answersQuestion

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 ...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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 ...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 2 answers | 0

### 2

answersQuestion

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...

circa 6 anni ago | 1 answer | 0

### 1

answerQuestion

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...

circa 6 anni ago | 0 answers | 0

### 0

answersQuestion

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...

circa 6 anni ago | 1 answer | 0