# Plane Fitting with vtk
**URL:** https://discourse.vtk.org/t/plane-fitting-with-vtk/5196
**Category:** Support
**Tags:** doxygen, jobs, training, proposal, file-formats
**Created:** [February 15, 2021, 11:54pm UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196 "2021-02-15T23:54:23Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Seram](https://discourse.vtk.org/u/Seram)
#### Post date: [February 15, 2021, 11:54pm UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/1 "2021-02-15T23:54:24Z")
Hello
I want to implement Plane Fitting using vtk.
Can I get some information for your reference?
I’m always getting your help.
Thank you.
BR
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [February 16, 2021, 12:21am UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/2 "2021-02-16T00:21:14Z")
There are many ways to fit a plane (least squares, RANSAC, …). Can you write more about your requirements?
Do you build VTK from source or you use it from Python?
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### Author:  [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [February 16, 2021, 12:25am UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/3 "2021-02-16T00:25:44Z")
Here is one available method: [vtkPlane::ComputeBestFittingPlane](https://vtk.org/doc/nightly/html/classvtkPlane.html#a7b88495d93a5aa5053b1044965df67bd)
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### Author:  [@Seram](https://discourse.vtk.org/u/Seram)
#### Post date: [February 16, 2021, 1:51am UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/4 "2021-02-16T01:51:10Z")
I am using vtk and I am in Visual Studio 2015 C++ environment.
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### Author:  [@Seram](https://discourse.vtk.org/u/Seram)
#### Post date: [February 16, 2021, 1:54am UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/5 "2021-02-16T01:54:52Z")
Thank you for answer.
I’ll try searching.
Is it suitable for plane correction of 3D data~?
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### Author:  [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [February 16, 2021, 8:44pm UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/6 "2021-02-16T20:44:09Z")
Hello,
By “plane correction” do you mean this (undo lens distortions):
or this (undo perspective projection):
?
cheers,
Paulo
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### Author:  [@Seram](https://discourse.vtk.org/u/Seram)
#### Post date: [February 17, 2021, 2:02am UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/8 "2021-02-17T02:02:53Z")
As shown in the attached image,
Align the left and right sides and top and bottom with the same surface as possible.
I want to make it work like this:
Example) CloudCompare
1. Tools -\> Fit -\> Plane (Get Matrix 4x4)
2. Edit -\> Apply Transformaction (Set Matrix 4x4)
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### Author:  [@Paulo\_Carvalho](https://discourse.vtk.org/u/Paulo_Carvalho)
#### Post date: [February 17, 2021, 12:23pm UTC](https://discourse.vtk.org/t/plane-fitting-with-vtk/5196/9 "2021-02-17T12:23:30Z")
If your data is supposed to represent a functional surface ( e.g. a height map where z = f(x, y) ), then it is not a good idea to apply a rotation to your points towards the fitted plane. Why? Because you will change the (x, y) coordinates too.
What you want is tecnically not a correction but an operation called detrending. Detrending alone is an entire field of research. **Assuming your data is functional** , a simple and fast procedure is: a) fit a plane like you suggested; b) evaluate the slope function at each data location (z\* = f(x, y)); c) then making a new z for each data point z’ = z - z\*.