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

plus de 10 ans il y a | 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. ...

plus de 10 ans il y a | 0

Question

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...

plus de 10 ans il y a | 1 réponse | 0

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réponse

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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...

plus de 10 ans il y a | 0

Question

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...

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

2

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Question

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 ...

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

2

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

plus de 10 ans il y a | 1

Question

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 ...

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

2

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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...

plus de 10 ans il y a | 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...

plus de 10 ans il y a | 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...

presque 11 ans il y a | 0

Question

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...

presque 11 ans il y a | 2 réponses | 0

2

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Réponse apportée
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 ...

environ 11 ans il y a | 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". ...

environ 11 ans il y a | 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...

environ 11 ans il y a | 0

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

plus de 11 ans il y a | 0

Question

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...

plus de 12 ans il y a | 1 réponse | 0

1

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Question

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...

plus de 12 ans il y a | 1 réponse | 0

1

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Question

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...

plus de 12 ans il y a | 2 réponses | 0

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Question

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...

plus de 12 ans il y a | 2 réponses | 0

2

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

plus de 12 ans il y a | 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.

environ 13 ans il y a | 0

Question

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...

plus de 13 ans il y a | 2 réponses | 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...

plus de 13 ans il y a | 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!

plus de 13 ans il y a | 6

Question

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 ...

plus de 13 ans il y a | 3 réponses | 0

3

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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...

plus de 13 ans il y a | 0

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What R2011a feature do you like the most?
I can easily tell you what I don't like: * No internal 64 Bit compiler. * No real progress in the GPU support. * No optimizat...

plus de 13 ans il y a | 0

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R2011a release
Couldn't find anything new in their GPU support. Anyone found it?

plus de 13 ans il y a | 0

Réponse apportée
[DEPRECATED] What frustrates you about MATLAB?
* The lack of built in 64 bit compiler (MATLAB used to work with Photoshop out of the box). * The graphics stack performance. I...

plus de 13 ans il y a | 3