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Is it possible to plot Surfaces at specified coordinates?
If in addition to the vertices sampled from the surfaces you also have the connectivity information among the vertices, you can ...

6 years 前 | 0

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How to plot a function on a cylinder surface
Here is an example: % Right cylinder parameters z_min=0; % lower cut-off point z_max=4; % upper cut-off point ...

6 years 前 | 2

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Is it posible in Matlab to model surface using spherical harmonics (SH) basing on 3d data? If yes, how can I do it.
If the surface in question is closed (i.e., no boundaries) and is genus-0 (i.e., ho holes or handles), then it is indeed possibl...

6 years 前 | 0

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solving system of equations using singular value decomposition and fsolve
This is an overdetermined system (i.e., number of equations > number of variables). You can obtain least squares solution as X=(...

6 years 前 | 1

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How do I display 55x305x4 .mat file as an image in Matlab and save it ?
% Data array A=Position3DGrid; % Convert to uint8 I_min=min(A(:)); I_max=max(A(:)); A=uint8(255*(A-I_min)/(...

6 years 前 | 0

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From .stl to mathematical function. Is it possible?
If the object is has a relatively simple geometry and you want to get a compact description of its shape, one of the following r...

6 years 前 | 1

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How can I accurately plot the centroid of black dots in MATLAB?
% Get the image im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/120388/MATLAB_QUESTION.PNG'); ...

6 years 前 | 0

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Finding the part of a larger matrix that is most similar to a smaller matrix
Here is another example, in case you dont have an Image Processing Toolbox: % Random N-by-N matrix N=1E3; % ma...

6 years 前 | 0

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open an image in another image
Here is an example: im1=imread('peppers.png'); im2=imread('football.jpg'); im3=im1; im3(1:size(im2,1),1:si...

6 years 前 | 0

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How to hightlight the mask in a image
Here you go: im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119871/test1.png'); % grayscale ...

6 years 前 | 0

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Converting a stack of .bmp images into an .stl file
(1) Segment the object of interest in your 3D image, (2) Reconstruct boundary of the segmented object using 'isosurface' func...

6 years 前 | 0

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could anyone tell me how to save the values while the code is getting executed
save('FileName.m','name_of_variable_you_want_to_save')

6 years 前 | 0

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How i can convert cell (each element in cell with different length) to array?
Is this kind of what you are looking for? ex = {[1,2,4,5,7,11,12],[1,3,4,5,7,11,12],[1,2,4,6,5,7,11,12],[1,3,4,6,5,7,11,12]...

6 years 前 | 0

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how to find maximum value in a matrix?
Demo of local search based on 4-connected neighbourhood: <</matlabcentral/answers/uploaded_files/119785/conn_4.jpg>> Demo ...

6 years 前 | 1

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How to divide the brain segmented slices in left and right compartments (halves)?
The simplest way to approach your problem is to (1) Aggregate all (segmented) slices from a given 3D image to form a volume ...

6 years 前 | 0

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3D array permutation
Suppose you have G, which is a Y-by-X-by-Z 3D array, then i-th xy slice: G_yx=G(:,:,i); % Y-by-X array i-th xz slice...

6 years 前 | 0

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done , finish the task
You have to apply watershed algorithm to the original (grayscale) image, not the binary one. Can you post the code you are using...

6 years 前 | 1

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How to find and draw boundary on some parts of an object in image?
Is this what you are looking for? im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119409/Imag...

6 years 前 | 0

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Detecting centroid and orientation of capsules
If your capsules have parametric a representation (e.g., ellipsoid), you can use Hough transform (HG). Description of a HG varia...

6 years 前 | 1

提问

Setting 'FaceAlpha'<1 for a patch object causes x- and y- axes of the plot to dissapear. Why and how can this be corrected?
Hello everyone, have any of you ever plotted a 2D patch object and noticed that upon altering its 'FaceAlpha' value below 1, ...

10 years 前 | 1 个回答 | 0

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Dividing a triangle into equal parts
Suppose you have a triangle defined by the vertices A, B and C. To subdivide this triangle into n triangles of equal area you ca...

12 years 前 | 0

已回答
Point inside triangle(s)?
Hi Sven, I have encountered this problem many times in the past. I am aware of at least two approaches to solve it. The first...

12 years 前 | 1

已回答
Problem trying to access labeled portion of images (updated 7/5)
The error occurs for m=559. If you look at the object: figure, imshow(K==559) set(gca,'xlim',[481 580],'ylim',[500 6...

12 years 前 | 0

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fminbnd fails to converge with exitflag=1
because TolX is a measure of change in x between two successive iterations and not an indication of how close it is to a true mi...

12 years 前 | 0

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已回答
Skull striping without affecting tumor region
The simplest way to segment the tumor in the sample image would be to use region growing algorithm. There are a few implementati...

12 years 前 | 0

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Solving an implicit function, fsolve vs. fzero
You can try the following approach: abc=rand(3,1); % A, B, C parameters q=8; % order of the polynomial ...

12 years 前 | 1

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does anybody have a matlab code for revised simplex method with box vriables like -2<=x<=10....etc
yep, there is a submission of this sort on FEX: http://www.mathworks.com/matlabcentral/fileexchange/8277-fminsearchbnd-fminse...

12 years 前 | 0

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weird results with relational operation ==
The expression xchk == X3 is indeed false, however , if you check the value of abs(xchk-X3) you will find it to be le...

12 years 前 | 1

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The "imregconfig" and " imregister" functions . help
You will not find these functions with your version of MATLAB because they were made available quite recently with the R2012a ve...

12 years 前 | 0

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triangles generated by isosurface
Hi Sayed, unfortunately there are no built-in Matlab functions that would allow you to regularize your mesh. There is, however,...

12 years 前 | 0

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