Question

Are the wavelet coefficients obtained after dwt2() transform normalized?

I have a norrmalized input image I . Are the coefficients obtained after the DWT normalized in matlab. Is there any approach to ...

2 years ago | 0 answers | 1

Answered

Why does this Error is shown when we use kmeans clustering : X must have more rows than the number of clusters.

In the kmeans documentation kmeans(X,k) .. here X is a n by d matrix where n is the number of instances and d is the dimension...

Why does this Error is shown when we use kmeans clustering : X must have more rows than the number of clusters.

In the kmeans documentation kmeans(X,k) .. here X is a n by d matrix where n is the number of instances and d is the dimension...

3 years ago | 0

| accepted

Question

Model Wavelet coefficients using Gaussian Mixtures

I tried to model the 'coefficient distribution of the wavelet using Gaussian Mixtures. I have attached the wavelet I am trying t...

3 years ago | 0 answers | 0

Question

How to initialize mean and sigma parameters for multivariate gaussian using k-means

So if i have an image of 32 by 32 how can i initialize multivariate gaussian parameters mean and sigma of 2 dimension using k-me...

4 years ago | 0 answers | 0

Question

How to create a multivariate gaussian mixture model??

[counts,binLocations] = imhist(X); stem(binLocations, counts, 'MarkerSize', 1 ); xlim([-1 1]); % in...

4 years ago | 1 answer | 0

Question

How to initialize the parameter mu to zero of a Gaussian Mixture model ?

X = mat_cell; [counts,binLocations] = imhist(X); stem(binLocations, counts, 'MarkerSize', 1 ); ...

4 years ago | 2 answers | 0

Question

MATLAB GMM by fitgmdist gives different values even after initializing using kmeans

So I am trying to compare two Gaussian Mixture Models with two distributions every time I run the program i get different values...

4 years ago | 1 answer | 0

Answered

how to calculate entropy of colored image?

Assuming _input_image_ is the name of the input. Entropy of each channel can be found using : Entropy_Red_Channel=Entropy(input...

how to calculate entropy of colored image?

Assuming _input_image_ is the name of the input. Entropy of each channel can be found using : Entropy_Red_Channel=Entropy(input...

4 years ago | 0

Question

Intersection of two cells arrays of 256 by 256 by 3 matrices

I have two cells A and B. A and B has RGB images A={img1,img2,img3} A={img4,img2,img6} How can I find the intersection between t...

4 years ago | 1 answer | 0

Question

How to normalize a histogram ?

How to normalize a histogram of an image of 12 bins between 0 and 1?

4 years ago | 1 answer | 0

Question

Copy a 3D input image to a cell array?

Suppose I have an image of size 256 by 256 by 3 and I would like to save the input image into cell(1) . How can I do that?

4 years ago | 1 answer | 0

Question

Is it possible to access the headers and packet information from the JPEG 2000 compressed format?

The JPEG 2000 COMPRESSION coding standard stores the compressed stream and stores data of packets, tiles and header information....

4 years ago | 1 answer | 0

Answered

How to calcuate sum of each row for a dataset through MapReduce??

If you have an N by M matrix; for P number of datasets 1) Read each data set 2)Calculate the sum and the val=sum(data(i,:)...

How to calcuate sum of each row for a dataset through MapReduce??

If you have an N by M matrix; for P number of datasets 1) Read each data set 2)Calculate the sum and the val=sum(data(i,:)...

4 years ago | 0

Answered

insert NxM arrary into a cell in a table

To insert an array into a table you can (1) create the cell; cell=zeros(N,2) (2)convert the matrix to a cell before insert...

insert NxM arrary into a cell in a table

To insert an array into a table you can (1) create the cell; cell=zeros(N,2) (2)convert the matrix to a cell before insert...

4 years ago | 0

Question

Error in using fitgmdist : xmust have more rows than x

Hi, I'm try to use fitgmdist to cluster high dimensional data with size of 128*128. Using gmfit = fitgmdist(data,3,' Cova...

4 years ago | 1 answer | 0