Answered

Can any body tell me how to implement KSVD in matlab?

Here is a function which implements the K-SVD algorithm. function [ mD ] = DL_KSVD( mD, mX, paramCardinality ) numberO...

Can any body tell me how to implement KSVD in matlab?

Here is a function which implements the K-SVD algorithm. function [ mD ] = DL_KSVD( mD, mX, paramCardinality ) numberO...

oltre 6 anni ago | 0

Answered

Linear Least Squares With 2 Inequality Constraints

I created a solution. It can be found here: http://math.stackexchange.com/a/1403593/33

Linear Least Squares With 2 Inequality Constraints

I created a solution. It can be found here: http://math.stackexchange.com/a/1403593/33

circa 7 anni ago | 0

| accepted

Question

Linear Least Squares With 2 Inequality Constraints

Hello, I would like to know how can I solve the following Linear Least Squares problem: arg min(x) (Ax - b)'(Ax - b) s....

circa 7 anni ago | 2 answers | 0

Answered

Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Here is the solution fully vectorized (Though uses much more multiplications than needed): mA = reshape(bsxfun(@minus, perm...

Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Here is the solution fully vectorized (Though uses much more multiplications than needed): mA = reshape(bsxfun(@minus, perm...

circa 7 anni ago | 0

| accepted

Question

Computing Mahalanobis Distance Between Set of Points and Set of Reference Points

Hello, I have an n x p matrix - mX which is composed of n points in R^p. I have another m x p matrix - mY which is compo...

circa 7 anni ago | 2 answers | 0

Answered

Backslash for solving very big sparse matrix in Ax=b

If you're memory limited the best solution I know of is <https://en.wikipedia.org/wiki/Conjugate_gradient_method Conjugate Gradi...

Backslash for solving very big sparse matrix in Ax=b

If you're memory limited the best solution I know of is <https://en.wikipedia.org/wiki/Conjugate_gradient_method Conjugate Gradi...

circa 7 anni ago | 1

Answered

Weighted k means clustering

Usually the weighting would be using <https://en.wikipedia.org/wiki/Mahalanobis_distance Mahalanobis Distance> Matrix. If I'm...

Weighted k means clustering

Usually the weighting would be using <https://en.wikipedia.org/wiki/Mahalanobis_distance Mahalanobis Distance> Matrix. If I'm...

circa 7 anni ago | 0

Answered

Reshape Video Matrix Into Long RGB Matrix and Back

I think I have a solution (At least one). going from video into one lone image: function [ mOutputImage ] = ReshapeVideo...

Reshape Video Matrix Into Long RGB Matrix and Back

I think I have a solution (At least one). going from video into one lone image: function [ mOutputImage ] = ReshapeVideo...

circa 7 anni ago | 0

| accepted

Question

Reshape Video Matrix Into Long RGB Matrix and Back

Hello, Let's say I have a Video Matrix `mVideoMatrix`. This is a 4D matrix (Numnber of Rows x Number of Columns x Number o...

circa 7 anni ago | 3 answers | 0

Answered

Create a LUT Table by Euclidean Distance

Ok, I created something using the ' <http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb allcomb> ' function from...

Create a LUT Table by Euclidean Distance

Ok, I created something using the ' <http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb allcomb> ' function from...

circa 7 anni ago | 0

| accepted

Question

Create a LUT Table by Euclidean Distance

Hello, I have a list of N vectors in 3D space (Points in RGB color space). We'll call that our Dictionary. The whole data ...

oltre 7 anni ago | 1 answer | 0

Question

Issues with The Colon (:) Operator

Hello, I have an issue with the colon operator which operates differently than expected. Let's define the following vect...

oltre 7 anni ago | 1 answer | 0

Question

Run Queue of Operations in Parallel

Hello, I have an Image - `mA` which I divided into Blocks: `mA1`,`mA2`, `mA3`, `mA4`. Now I have a function - `BlurImage` ...

oltre 7 anni ago | 1 answer | 0

Answered

What frustrates you about MATLAB?

There 2 main things I want in MATLAB: # OpenCL support so we'll be able to use AMD graphics card which have great Double Prec...

What frustrates you about MATLAB?

There 2 main things I want in MATLAB: # OpenCL support so we'll be able to use AMD graphics card which have great Double Prec...

oltre 7 anni ago | 1

Answered

Parallel Computing Toolbox GPU using ATI with Stream?

There 2 main things I want in MATLAB: # OpenCL support so we'll be able to use AMD graphics card which have great Double Prec...

Parallel Computing Toolbox GPU using ATI with Stream?

There 2 main things I want in MATLAB: # OpenCL support so we'll be able to use AMD graphics card which have great Double Prec...

oltre 7 anni ago | 1

Answered

MATLAB OpenCL

I wish MATLAB will move from CUDA to OpenCL. There are great libraries for that and it is time we'll enjoy GPU acceleration i...

MATLAB OpenCL

I wish MATLAB will move from CUDA to OpenCL. There are great libraries for that and it is time we'll enjoy GPU acceleration i...

oltre 7 anni ago | 2

Answered

Recursive Implementation of the Gaussian Filter

he answer was simple, the article uses the coefficients value on one hand where the MATLAB implementation on the other. Namely,...

Recursive Implementation of the Gaussian Filter

he answer was simple, the article uses the coefficients value on one hand where the MATLAB implementation on the other. Namely,...

oltre 7 anni ago | 0

| accepted

Question

Recursive Implementation of the Gaussian Filter

Hello, I'm trying to implement the article "Recursive Implementation of the Gaussian Filter". This article suggest an II...

oltre 7 anni ago | 1 answer | 0

Question

Generate Code with Structure with Different Size Matrices

Hello, I'm trying to use MATLAB Coder to generate code for the following code: for iScaleIdx = 1:numScales gaussi...

circa 8 anni ago | 1 answer | 0

Question

Averaging Overlapping Pixels in Sliding Window Operation

Hello, I'm looking for an efficient way to average overlapping pixels which are result of sliding window operation. To exp...

circa 8 anni ago | 3 answers | 0

Answered

When will MATLAB 2014b release?

MATLAB R2014b is out. I'm so disappointed Mathworks does nothing to improve the language speed. Moreover, they are still s...

When will MATLAB 2014b release?

MATLAB R2014b is out. I'm so disappointed Mathworks does nothing to improve the language speed. Moreover, they are still s...

circa 8 anni ago | 0

Answered

What is changing in R2014b?

MATLAB R2014b is out. I'm so disappointed Mathworks does nothing to improve the language speed. Moreover, they are still s...

What is changing in R2014b?

MATLAB R2014b is out. I'm so disappointed Mathworks does nothing to improve the language speed. Moreover, they are still s...

circa 8 anni ago | 0

Answered

Integrating MATLAB R2014a with Visual Studio 2013

Update: It seems I managed to have VS 2013 on my list. Yet when I try to use 'loadlibrary' as in the documentation: htt...

Integrating MATLAB R2014a with Visual Studio 2013

Update: It seems I managed to have VS 2013 on my list. Yet when I try to use 'loadlibrary' as in the documentation: htt...

circa 8 anni ago | 0

| accepted

Question

Integrating MATLAB R2014a with Visual Studio 2013

Hello, I have Visual Studio 2013 Premium installed. It was installed using its defaults. I try to integrate it with MATLA...

circa 8 anni ago | 1 answer | 0

Answered

Matlab R2014a and Visual Studio Professional 2013

I have the same issue, Installed VS 2013 on Windows 7. I have MATLAB R2014a and the VS 2013 isn't on the available compilers li...

Matlab R2014a and Visual Studio Professional 2013

I have the same issue, Installed VS 2013 on Windows 7. I have MATLAB R2014a and the VS 2013 isn't on the available compilers li...

circa 8 anni ago | 0

Question

Parallelization of a Loop with 'parfor - Unsuccessfully

Hello, I created an algorithm which work on Image Patches. I go through matrix of an image and apply a function of a neighborh...

circa 8 anni ago | 1 answer | 0

Answered

Using the MX Matrix Library in General C Code

It seems Mathworks did something to disable the option to create a C code which uses their library outside the MEX scope. I D...

Using the MX Matrix Library in General C Code

It seems Mathworks did something to disable the option to create a C code which uses their library outside the MEX scope. I D...

circa 8 anni ago | 0

| accepted

Answered

Replication Photoshop's Gaussian Blur and Unsharp Mask in MATLAB

Photoshop uses Integral Images approximation for the Gaussian Blur. Its Unsharp Mask is once applied for "Dark Halos" and o...

Replication Photoshop's Gaussian Blur and Unsharp Mask in MATLAB

Photoshop uses Integral Images approximation for the Gaussian Blur. Its Unsharp Mask is once applied for "Dark Halos" and o...

circa 8 anni ago | 0

| accepted

Answered

Vectorizing Calculation of the Autocorreltion function of a Matrix (Per Column)

It can be done using Toeplitz matrix.

Vectorizing Calculation of the Autocorreltion function of a Matrix (Per Column)

It can be done using Toeplitz matrix.

circa 8 anni ago | 0

| accepted

Answered

Which MATLAB operations/functions need speeding up?

The function `im2col`. See here: http://www.mathworks.com/matlabcentral/answers/151941-efficient-implementation-of-im2col...

Which MATLAB operations/functions need speeding up?

The function `im2col`. See here: http://www.mathworks.com/matlabcentral/answers/151941-efficient-implementation-of-im2col...

circa 8 anni ago | 2