# vtkFlyingEdges3D Usage. (Comparison with vtkContourfilter)

**URL:** https://discourse.vtk.org/t/vtkflyingedges3d-usage-comparison-with-vtkcontourfilter/3873
**Category:** Support
**Created:** [July 30, 2020, 1:15am UTC](https://discourse.vtk.org/t/vtkflyingedges3d-usage-comparison-with-vtkcontourfilter/3873 "2020-07-30T01:15:10Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![Seun](https://discourse.vtk.org/user_avatar/discourse.vtk.org/seun/32/767_2.png) [@Seun](https://discourse.vtk.org/u/Seun)
#### Post date: [July 30, 2020, 4:18pm UTC](https://discourse.vtk.org/t/vtkflyingedges3d-usage-comparison-with-vtkcontourfilter/3873/6 "2020-07-30T16:18:01Z")

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From what I understand, vtkContourFilter uses marching cube.

Hardware: iMac (3.5GHz, 8-Core, Intel Core i9)  
OS: macOS 10.15.6 (Catalina)

# For both cases of (vtkContourFilter & vtkFlyingEdges3D)

* * *

Input image (dimension): 180 x 256 x 256  
Input image (Scalar type): int16\_t

note: I filter the poly data through a stripper as a last step, this might explain why the cells are 0 (as I only work with strips). The result of the final output poly data is as follows

# Output info - vtkContourFilter

* * *

number of cells - 0  
number of strips - 71390  
number of points - 211880

# Output info - vtkFlyingEdges3D

* * *

number of cells - 0  
number of strips - 72966  
number of points - 217790

Can you make any sense of this?

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_[View the full topic](https://discourse.vtk.org/t/vtkflyingedges3d-usage-comparison-with-vtkcontourfilter/3873)._