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How to generate orthogonal X-ray Projection, Digitally Reconstructed Radiographs (DRR), from a particular CT volume
This is a popular Matlab compatible library, https://github.com/CERN/TIGRE/blob/master/Frontispiece/MATLAB_installation.md It...
environ 4 heures il y a | 0
How to move a 3D volume in 6D (3 Translations and 3 Rotations)
I defined a function called "applyRigidTransform3D" in code 1 and "rigidTransform6D" in code 2 for the 6D movements It shouldn'...
3 jours il y a | 0
| A accepté
The surface I'm plotting comes out jagged and "saw teeth" like
It's a very coarsely sampled surface. There's not really any more to it. You can bicubicly upsample the data if you want a smoot...
3 jours il y a | 0
How to draw line in viewer3d ?
You could use images.ui.graphics.Surface to create a very thin cylinder, could you not?
9 jours il y a | 0
| A accepté
Inverse problem, Overdetermined, Nonlinear
You would use fsolve or, if you want specific constraints on the unknowns, e.g., bounds, you would use lsqnonlin. You could al...
9 jours il y a | 0
2D-3D image registration - COMPLETE 6D ESTIMATION
I haven't read the paper, but I don't see how the proposed method would ever work as you describe it. 6D motion simply does not ...
9 jours il y a | 0
Fitting to exp plus a constant
It looks like the fit was successful, but the model function is overparametrized, so there is no specific value for a (or c) tha...
10 jours il y a | 0
Showing the value on the x-axis as a legend the moment the curve deviates from the x-axis
Something like this, perhaps: Hlines=plot(1:5, max(0,-2:2), 1:5, max(0,-1:3)); axis padded h=arrayfun(@addIt,Hlines); leg=l...
11 jours il y a | 0
camera intrinsics calibration produces wild out-of-range principalPoint
You haven't provided data with which to repeat the calibration, so one can only guess. But if reconstruction error is low, the p...
11 jours il y a | 0
How can you save a 1 by 3 array in each position of a 4D array?
I would like to only have one 4D array, with each coordinate housing a 1x3 with all 3 data points needed. Is this possible? You...
12 jours il y a | 1
| A accepté
How to fit a set of data where one of the fitting parameters decays exponentially?
Why not just replace Γ_cav in your model equation by a parametrized exponential, e.g., Γ_cav=a*exp(b*x) where a and b are ne...
12 jours il y a | 0
Is image normalization performed when using "trainnet" for semantic segmentation training?
If your network has an imageInputLayer with the Normalization parameter set to do so, https://www.mathworks.com/help/deeplearni...
14 jours il y a | 0
The calibrator app says the patterns are "too similar" even if they are not
Your cam2 images are of poor quality. Corner detection done in isolation fails pretty badly for some of them (see below). Did yo...
15 jours il y a | 0
Plots have small titles
I also think that it is small in the figure viewer. I haven't noticed any changes in the figure viewer. However, you can set th...
16 jours il y a | 0
| A accepté
the dimension of matrix when using 'sparse' to generate sparse matrix
With a slight reimplementation of tril3d, the test code seems to work: % test spblkdiag tril ndSparse z1=rand(8,8,20); z2=t...
17 jours il y a | 0
How to get legend entries from existing figure ?
The legend's String property will get you the legend labels for the different lines, e.g., plot(rand(5,3)); L=legend; L.Stri...
18 jours il y a | 0
| A accepté
App Designer component generated by code not displaying
It is conspicuous to me that you are complaining about missing labels, but not about the missing uipanel!. Did you pre-populate ...
18 jours il y a | 0
| A accepté
What is causing this intermittent error in parfor?
If you add the indicated line, your class constructor will support no-argument calls, and the error will go away: funct...
19 jours il y a | 0
| A accepté
Defining inequality constraint A*x <= b for genetic algorithm
You should be able to vectorize the computations in your self-intersection checker (within your nonlinear constraint function). ...
20 jours il y a | 0
Question
Why does fprintf attach a negative sign to a zero?
Here is some code to set up the demonstration, load data fid = fopen('runsim.py','w'); rotation=[0,0,-GantryAngles(1)]; ...
23 jours il y a | 3 réponses | 0
3
réponsesQuestion
Closing the Property Inspector in R2025b
The Property Inspector pane does not appear to have a 'Close' button in R2025b, nor does its sidebar icon appear to have a dropd...
26 jours il y a | 1 réponse | 0
1
réponseconfidence interval from lsqnonlin function while retaining constraints
After solving the original problem, initialguess = [3,25.5013,0.5,-0.8793]; %[n,tau(fs),m,c] options = optimoptions('lsqnonlin...
26 jours il y a | 0
Question
Pinning the AxesToolbar (revisited)
The AxesToolbar was introduced about 6 years ago, However, I never embraced it, because it wa...
27 jours il y a | 1 réponse | 3
1
réponseHow can I move the find & replace window or get it to automatically close
If you widen the Editor window sufficiently, the Find and Replace window will move to the right into a blank area where it will ...
28 jours il y a | 0
| A accepté
Question
Mixing subscripts with linear indices
Generally speaking, I have found that it has always been possible to mix subscript and linear array indexing, as long as the ind...
29 jours il y a | 1 réponse | 1
1
réponseeffects of ifft2(x, 'symmetric') while x is not conjugate symmetric
When you specify "symmetric", the upper half of the fft input array is ignored, e.g. x=ones(1,7); ifft(x) x(5:end)=rand(1...
environ un mois il y a | 1
| A accepté
The single function is not behaving as expected
No, it is not a bug. The precision of a number isn't something that is measured only by the digits to the right of the decimal p...
environ un mois il y a | 3
| A accepté
Integer conversion without precision loss for literal function inputs
test 7725400999518902274 function test(a) arguments a (1,:) string end a=eval("uint64("+ a + ")"), end
environ un mois il y a | 1
| A accepté
FFT problem: FFT -> some manipulation -> IFFT results in one-element shift
I think the line where I define my frequency: f= ((-length(fourierNoise)/2):((length(fourierNoise)/2)-1))*fs/length(fourierNois...
environ un mois il y a | 0
Free boundary of a tetrahedral mesh has interior-crossing edges
OK, my bad. The solid was built from smaller, triangular sub-prisms, each subsequently split into tetrahedrons. While neighborin...
environ un mois il y a | 0
| A accepté
