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Itzik Ben Shabat


Last seen: mehr als ein Jahr ago Active since 2012

For full detail see my personal website: http://www.itzikbs.com/

Professional Interests: 3D Computer vision, computer graphics, computer aided design (CAD), voxels, point clouds, deep learning.

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Question


3D equivalent to depthConcatenationLayer?
Is there a 3D equivalent to the 'depthConcatenationLayer' layer?

mehr als 3 Jahre ago | 0 answers | 0

0

answers

Question


How to get deep learning layer output size?
Hi, I am getting to know MATLAB's capability with deep learning (I am fluent in TensorFlow). I built a very big computatio...

mehr als 3 Jahre ago | 1 answer | 0

1

answer

Answered
3d convolutional layer for deep learning applications
It seems to be available in MATLAB 2019 : layer = convolution3dLayer(filterSize,numFilters) https://www.mathworks.com/help/de...

mehr als 3 Jahre ago | 0

Question


why do the markers change size after several key press
hi, my code is attached below. it works but i noticed something odd. after i press '+' a few times the yellow markers shri...

fast 5 Jahre ago | 2 answers | 0

2

answers

Question


How to draw a bar plot with different colors and several groups
I want to plot a bar graph which summarizes algorithms performance has three main parameters 1. Publication year (the x axis) ...

fast 5 Jahre ago | 1 answer | 0

1

answer

Question


How to count number of points in a volumetric grid (4D histogram)?
Hi, I have 3D point data in XYZ and i wish to creat a 4D histogram, i.e. a 3D matrix containing the point count in a volumetric...

fast 6 Jahre ago | 0 answers | 0

0

answers

Question


mex file gives two different results. what is the cause?
Hello, I am running a mex file that i compiled on my pc. I expect that for the same input the result would be the same. however...

etwa 6 Jahre ago | 2 answers | 0

2

answers

Question


How does matlab compute confidence interval for power function in cftool ?
Hi, I am approximating the parameters of a power function (y=Ax^B) derived from sampled data using cftool. The result is g...

etwa 6 Jahre ago | 0 answers | 0

0

answers

Answered
How to Approximate Chi Square?
Hi, I eventually found what i needed. its chi2inv function, thanks

mehr als 6 Jahre ago | 0

| accepted

Question


How to Approximate Chi Square?
Hi, I wish to get the Chi square distribution value for a given confidence and a given number of degrees of freedom (instead ...

mehr als 6 Jahre ago | 1 answer | 0

1

answer

Question


Mex bad allocation error
Hi, I have a mex file which i run from matlab. It works fine. However, if i try to run it multiple times in a loop ( about...

fast 7 Jahre ago | 0 answers | 0

0

answers

Question


why does probplot return negative/larger than 1 values ?
Hi, h=probplot(Y); is supposed to show the probability distrbution of the values in Y. so probability cant be negative ...

fast 7 Jahre ago | 2 answers | 0

2

answers

Question


How to interpolate colors and plot as an image?
Hi, I have nine points (X,Y coordinate) and the color in each point (currentl in three vectors). I wish to show an image of t...

etwa 7 Jahre ago | 0 answers | 0

0

answers

Question


How to get around out of memory issue
Hi, I have a set of 3d points (x,y,z). I wish to compute the distance between every point and all of the other points in the ...

etwa 7 Jahre ago | 2 answers | 0

2

answers

Answered
How to use MEX with PCL
so i solved it eventually. The main problem was that i used C++ in a C file. so first thing i did was to change the file to .cp...

mehr als 7 Jahre ago | 2

| accepted

Question


mex usage efficiency question
Hi, I am new to mex. im using mex with PCL (Point Cloud Library). what i want to do is calculate different features of the poi...

mehr als 7 Jahre ago | 1 answer | 0

1

answer

Question


How to use MEX with PCL
Hi, so im new to mex but very familiar with matlab. im trying to use PCL with MEX but i keep getting a lot of errors that i do...

mehr als 7 Jahre ago | 2 answers | 0

2

answers

Question


how to extract rgb color image from surface height colormap
Hi all, I wrote the code attached below. what i wish to do now (and not sure how) is create an RGB image from the colors that...

mehr als 7 Jahre ago | 1 answer | 0

1

answer

Question


how to draw multiple patches with different number of vertices?
Hi, I am trying to draw many patches which have a different number of vertices. I have the vertices stored in the matrix V wi...

mehr als 7 Jahre ago | 2 answers | 0

2

answers

Question


how to plot multiple implicit quadratic surfaces at once ?
Hi, so i wrote the following code to plot a single quadratic implicit surface based on the ezimplot3 function from matlab ex...

etwa 8 Jahre ago | 1 answer | 0

1

answer

Question


what is the best way to plot an implicit surface ?
Hi, I wish to plot the following surface functions (quadratics) in a given domain : f(x,y,z)=a+b*x+c*y+d*z+e*x^2+f*y^2+g*z...

etwa 8 Jahre ago | 2 answers | 0

2

answers

Question


Is there a faster way to plot wireframe cubes from their centers and sizes?
Hi, so i wrote the attached function. I will be working with many cubes so i was wondering if there is a better implementat...

etwa 8 Jahre ago | 2 answers | 1

2

answers

Question


is there a code to open and run all m files in a folder?
Hi, I have multiple (about 50) different .m files in a folder. I wish to open and run each and every one of them using a matlab...

mehr als 8 Jahre ago | 5 answers | 0

5

answers

Question


how to visually pick graphic objects
Hi, I defined a 3d "world" in matlab (axes). within this "world" i draw a few graphic objects (cubes and spheres using patch an...

mehr als 8 Jahre ago | 1 answer | 0

1

answer

Question


how to make color and lighting continuouse using patch
Hi, im trying to visualize 3d objects in MATLAB. when i used the following script i wrote clear all; close all ...

mehr als 8 Jahre ago | 0 answers | 0

0

answers

Question


How to make patch edges invisible but still effected by lighting?
Hi, I am plotting a voxelized model using patch command. I wish to remove the edges. so i set the property edgecolor set...

mehr als 8 Jahre ago | 0 answers | 0

0

answers

Answered
how o save a part of figure with gui to image
So I found the answer myself. it seems that the export_fig from the file exchange can do this if you give it an axes handle an...

mehr als 8 Jahre ago | 1

| accepted

Question


how o save a part of figure with gui to image
hello all, i have read every post and answer on the subject but nothing solved my problem. I have a figure with a gui. it also...

mehr als 8 Jahre ago | 1 answer | 0

1

answer

Question


how to discard NaN vectors from a 3D matrix
Hi, I have a 3D matrix. some of its rows/columns/depth vectors can be all NaN. I wish to creat a new matrix which is the same...

mehr als 8 Jahre ago | 0 answers | 0

0

answers

Question


how to use format spec in fprintf properly
Hello, I have read the help documentation but somtehing doesnt work as expected. say i have a variable x=3.14 and i...

mehr als 8 Jahre ago | 1 answer | 0

1

answer

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