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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...

oltre 11 anni fa | 0

| accettato

Risposto
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...

oltre 11 anni fa | 0

| accettato

Risposto
Vectorizing Calculation of the Autocorreltion function of a Matrix (Per Column)
It can be done using Toeplitz matrix.

oltre 11 anni fa | 0

| accettato

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Which MATLAB operations/functions need speeding up?
The function `im2col`. See here: http://www.mathworks.com/matlabcentral/answers/151941-efficient-implementation-of-im2col...

oltre 11 anni fa | 2

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MATLAB's JIT Engine
Another look on the subject: http://justindomke.wordpress.com/2012/09/17/julia-matlab-and-c/ And they got much faster. ...

oltre 11 anni fa | 0

Domanda

Create The Image Laplacian Matrix Effectively
Hello, I want to build the Spatial Laplacian of a given operation on an image. The Matrix is given by: <</matlabcentr...

oltre 11 anni fa | 1 risposta | 0

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How can we find anisotropic 2*2 tensor in an image?
You may have a look at the code I published here: <https://github.com/JarnoRalli/PDE-based-image-processing/issues/1> If a...

oltre 11 anni fa | 0

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Replication Photoshop's Gaussian Blur and Unsharp Mask in MATLAB
Hello, Has anyone succeeded to replicate Photoshop's Gaussian Blur and Unsharp Mask function up to a rounding error? Photosh...

quasi 12 anni fa | 2 risposte | 0

2

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Domanda

Calculating the Minimum and The Maximum of a Slidig Window
Hello, How would you create the fastest implementation to extract the Minimum and the Maximum of a Local Sliding Window over ...

quasi 12 anni fa | 2 risposte | 0

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Risposto
Sliding window minimum and maximum filter
I would use: localMaxImage = colfilt(inputImage, [winLength winLength], 'sliding', @max); localMinImage = colfilt(inputI...

quasi 12 anni fa | 1

Domanda

Constrained Weighted Least Squares (Image Interpolation)
Hello, I'd like your assistance with solving a constrained weighted least squares problem. I can't use `lsqlin` since the ...

quasi 12 anni fa | 2 risposte | 0

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Risposto
How to apply Kalman filter on time series?
Kalman Filter is pretty straight forward, why not write it yourself? You can see all needed here: <https://en.wikipedia.or...

quasi 12 anni fa | 0

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Installing c++ compiler for MATLAB
I think you can use Microsoft Windows SDK: http://www.mathworks.com/support/compilers/R2014a/index.html Specifically: h...

quasi 12 anni fa | 0

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how can I make this code faster on the GPU?
Hopefully, next versions of MATLAB will support OpenCL 2.0. When that happens, CPU and GPU will use the same memory space which...

quasi 12 anni fa | 0

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The Flop (Floating Point Operations per Second) Rate of MATLAB Code
Hello, I know Intel MKL / IPP libraries performance in simple operations (Multiplication, Summation, Matrix Multiplication, Vec...

circa 12 anni fa | 2 risposte | 0

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Risposto
Which MATLAB operations/functions need speeding up?
_filter_ As published in File Exchange, simple loop unrolling is much faster than the current implementation. Also the GPU ...

circa 12 anni fa | 0

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Image processing technique in depth map concept
This would be estimating the "Depth Map" of the image by one image. I think it could be done by estimating the "Blur Level". ...

oltre 12 anni fa | 0

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Can MATLAB work well and paralellize code with AMD Radeon HD 7670m graphics card ?
Unfortunately, MATLAB doesn't support OpenCL. ATI is the right choice for GPGPU. MATLAB, at the moment, isn't. You can al...

oltre 12 anni fa | 0

Risposto
Calculate the number of days in a year
I would go something like that: firstDayInYear = '01/01/2012'; lastDayInYear = '31/12/2012'; firstDayInYearNum = ...

quasi 13 anni fa | 0

Domanda

Multiply Image Pixels by a Matrix
Hello, Let's say I have a 3 channel image M -> [numRowx * numColumns * numChannels]. I also have a 3 by 3 matrix A (Color Conb...

oltre 13 anni fa | 1 risposta | 0

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Solving a Bilinear Optimization Problem
Hello, I would like to optimize to following expression: <<http://i.imgur.com/ey7Hy.png>> Note: All are matrices. I'd l...

oltre 13 anni fa | 1 risposta | 0

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Using the MX Matrix Library in General C Code
Hello. I'm trying to create a MEX filte. In order to debug the code I'm trying to compile it in Visual Studio. I'm replacin...

oltre 13 anni fa | 2 risposte | 0

2

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Deploying Standalone Executable with No MCR
Hello. I have a simple M file which creates a GUI, let the user chose a text file, apply a simple manipulation on the text file...

oltre 13 anni fa | 2 risposte | 0

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Matlab 2012a
One of the most disappointing releases. Nothing really got improved :-).

quasi 14 anni fa | 0

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What is missing from MATLAB?
Built in 64 Bit Compiler to allow out of the box integration with Adobe Photoshop using 64Bit versions of the software.

oltre 14 anni fa | 0

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Vectorizing Calculation of the Autocorreltion function of a Matrix (Per Column)
Hello. I have a matrix A = [1 2 3; 4 5 6; 7 8 9]; I want to calculate the Autocorrelation function of each of its col...

oltre 14 anni fa | 2 risposte | 0

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Basic probability question
Uniform distribution is always a good point to start from. Then just divide the range [0 1] to whatever ratio you'd like accord...

oltre 14 anni fa | 0

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how do i reverse a vector
This might work as well (For 1D Vectors): vReversed = v(end:-1:1); Good luck!

oltre 14 anni fa | 6

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Converting Analog Filter into Digital Filter
Hello. I'm trying to design a simple Digital Filter. The transfer function of the filter is: 1 / s + alpha Where 'alpha' is ...

oltre 14 anni fa | 3 risposte | 0

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Plot question: Monthly data on yearly axis
If I'm guessing right what's your difficulty the fact that plot doesn't show "NaN" values should assist you. Meaning, Pad you...

quasi 15 anni fa | 0