# Bruno Pop-Stefanov

### MathWorks

Developer for the Image Processing Toolbox.

Some interests: image processing, computer vision, computational photography, machine learning.

Although I work for MathWorks, all my comments, answers and opinions expressed here are mine alone and do not necessarily reflect those of MathWorks, past or present.

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**Content Feed**

Does the Computer Vision Toolbox function "demosaic" use the IPP library?

No, it does not use IPP. |demosaic| implements the following algorithm: <http://research.microsoft.com/apps/pubs/default.aspx...

mer än 6 år ago | 3

| accepted

how to remove hair , and find the center of finger knuckle

This is not perfect, but slightly better than the results you got: I = rgb2gray(imread('06.jpg')); se = strel('dis...

mer än 7 år ago | 1

i need to find cicrles in below black and white image

You can use the <http://www.mathworks.com/help/images/ref/imfindcircles.html |imfindcircles|> function from <http://www.mathwork...

mer än 7 år ago | 0

Filling data gaps in a periodic timeseries in MATLAB

This is definitely not an easy problem. There are several ways you can go about this. *1) Curve Fitting* The easiest metho...

mer än 7 år ago | 1

How to draw a line perpendicular to the medial axis in each point and save the intensity values?

Take a look at the file |overlayLines.m| that I have attached. This function draws red lines over an RGB image. You can certainl...

mer än 7 år ago | 0

Projecting binary mask back onto image to read values

The binary image you obtain can be used to do logical indexing. Logical indexing is accessing the elements of a matrix using a l...

mer än 7 år ago | 0

| accepted

Need Symmetric Multivariate Laplace Distribution

There is a submission on the File Exchange for a Laplacian random number generator: <http://www.mathworks.com/matlabcentral/file...

mer än 7 år ago | 0

Stop some code from Publishing

*1) How to hide some parts of the code* One way to publish parts of the code while hiding some other parts that you still wan...

mer än 7 år ago | 6

overlay geotiffs with transparency using different colormaps

Calling <http://www.mathworks.com/help/map/ref/geoshow.html |geoshow|> a second time will overlay over what was previously displ...

mer än 7 år ago | 1

orthogonal collocation on finite elements: Matlab code

Take a look at these links: <https://www.kirp.chtf.stuba.sk/~fikar/research/dynopt/fik05oc.pdf A MATLAB PACKAGE FOR ORTHOGONA...

mer än 7 år ago | 0

Display of structures in Variables panel

The new display for struct arrays has been released starting with MATLAB R2013b and you cannot revert to the old one. The new di...

mer än 7 år ago | 0

| accepted

Change how struct variable fields are displayed?

Unfortunately, it's not possible to display the fields vertically (i.e., each column represents an element of the struct array) ...

mer än 7 år ago | 0

| accepted

Using parfor instead of for

Dividing the work into several jobs and sending the jobs to the workers is very expensive. This is done at the line with |parfor...

mer än 7 år ago | 0

| accepted

Virtual Camera Support for Matlab Image Acquisition Toolbox

Hi Sonny, I read that Axis Streaming Assistant creates a DirectShow device. Can you confirm that this is the case for the vir...

mer än 7 år ago | 0

matlab 2014b on Yosemite, high CPU%

The _getting status for files_ message appears because of the Source Control integration in the Current Folder browser. Try disa...

mer än 7 år ago | 4

Errors with getblast/blastread built-in functions

What release of Bioinformatics Toolbox are you using? There was a bug in R2009a and earlier in which the <http://www.mathwork...

mer än 7 år ago | 0

How to factor a matrix by a list of symbolic variables

Are the equations in |Y| linear in the variables in |Theta|? If yes, this is a simple linear system of equations, which you can ...

mer än 7 år ago | 0

| accepted

Matlab(R2014b) compatible with OS X Yosemite?

Hi Andreas, To be clear: MATLAB R2014a is the latest release available to students: <http://www.mathworks.com/academia/stu...

mer än 7 år ago | 0

EPS export problems in R2014b

Can you check the |'PaperPositionMode'| property of the figure before printing it in each case? Try setting it to |'auto'| befor...

mer än 7 år ago | 2

| accepted

How Can I simulate non uniform background illumination?

If I understand your question correctly you would like to generate images with non-uniform background illumination in order to t...

mer än 7 år ago | 0

| accepted

Github support for Matlab files

You can add any type of file to a Git repository. However, if you are using command-line Git (meaning, you have installed Git on...

mer än 7 år ago | 1

| accepted

Creating subplot from saved semilog plots

This is probably because the axes scale is linear by default. Change the |'YScale'| property from |'linear'| to |'log'| as fo...

mer än 7 år ago | 0

| accepted

Word Matlab Notebook and figures...

I tried on my end and it looks like you can only show one figure per cell. Instead of defining 1 cell containing all of your cod...

mer än 7 år ago | 0

| accepted

MATLAB command-line git for Mac?

MATLAB R2014b does support git, but you still have to install it on your system in order to use it with MATLAB. Unfortunately, t...

mer än 7 år ago | 2

the priority and benefits of saving data in .mat file

MAT files are compressed, binary files used to store data on the computer's hard drive. It is a convenient way to save data for ...

mer än 7 år ago | 4

| accepted

How to create string array using inpu

You need to use <http://www.mathworks.com/help/matlab/matlab_prog/what-is-a-cell-array.html cell arrays>: for i=1:5 ...

mer än 7 år ago | 2

| accepted

uigetfile window screen position

What version of MATLAB do you use? What operating system? I tried with MATLAB R2014b on Windows 7 with two monitors and the |...

mer än 7 år ago | 1

Matlab / Mupad does not solve definite integral

If you want to "force" MATLAB to give a numeric solution to an integral, you can use the <http://www.mathworks.com/help/matlab/r...

mer än 7 år ago | 1

Storing multiple images in one 4D Array

I am not sure I understand what you would like to achieve exactly, but here are a few suggestions: If you have p images, each...

mer än 7 år ago | 1

| accepted

How do I smooth out a surface distribution plot?

There is no off-the-shelf functionality in MATLAB that allows you to detect outliers in data. Techniques exist but it is still a...

mer än 7 år ago | 1

| accepted