Difference between revisions of "Man MeshEditing"

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When generating a mesh starting from data acquired by a scanner the meshes may not be perfect for your need.
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When generating a mesh starting from data acquired by a scanner the meshes may not be perfect for the designated use.
  
 
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The generated mesh may have artifacts, noise or holes that need to be fixed.  
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The generated mesh may have artifacts, noises or holes that need to be fixed.  
  
 
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OpticalRevEng Dental already apply a different mesh generation strategy specific for the element you're working with, trying to fix all the problems automatically, but you may need to further edit the meshes before exporting them to another software.
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OpticalRevEng Dental already applies a different mesh generation strategy specific to each element, trying to fix all the problems automatically, however there could be the need to further edit the meshes before exporting them to another software.
  
 
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In this page you can read about the Mesh Editing tools provided tha can be found in the [[Support_Toolbars_And_Menus|Mesh Menu and Mesh Toolbar]].
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In this page are described the Mesh Editing tools provided that can be found in the [[Support_Toolbars_And_Menus|Mesh Menu and Mesh Toolbar]].
  
 
== Remove Spikes == <!--T:3-->
 
== Remove Spikes == <!--T:3-->
  
 
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A '''spike''' in a mesh is a when you have a tiny part of the surface that in reality is not part of the 3D object Acquired by the scanner.  
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A '''spike''' in a mesh is defined as a tiny part of the surface that is not actually part of the 3D object Acquired by the scanner.  
  
 
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Theese spikes are normally automatically corrected by the software during the mesh generation, but if you import meshes from other system you may find them.
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These spikes are normally automatically corrected by the software during mesh generation, but if meshes are imported from other system there could be some of them.
  
 
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This tools automatically removes all the spike it found and repair the mesh.
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This tool automatically removes all the found spikes and repair the mesh.
  
 
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The sharpening tools do two things at the same time. It smooth the part of the surface that are more planar and it sharpen the edges. It takes 2 parameters:
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The sharpening tool performs two actions at the same time. It smooths the parts of the surface that are more planar and it sharpens the edges. It takes 2 parameters:
  
 
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# T [°] : This angle identify what is an edge, all the parts of the surface that create an angle less than T° will be sharpened. If you put this a 0 you're smoothing all the surface
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# T [°] : This angle identifies what an edge is, all the parts of the surface that create an angle minor than T° will be sharpened. When this value is at 0 all the surface will be smoothed
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# Normal Iterations : How many times the software will pass over the surface to do the sharpening. Bigger values means more smmoting and more sharpening
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# Normal Iterations : How many times the software will pass over the surface to do the sharpening. Bigger values mean more smmoting and more sharpening
  
 
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'''This tool is used automatically by the software for you with specific parameters. Use of this software with the wrong parameters may modify the shape and dimension of the objects'''.
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'''The software already applies this tool automatically using specific parameters. The use of this tool applying wrong parameters may modify the shape and dimension of the objects'''.
  
 
== Mesh Smooth == <!--T:8-->
 
== Mesh Smooth == <!--T:8-->
  
 
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This tool is similar to the Mesh Sharpening tools but apply a smoothing to all the surface without preserving the edges.
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This tool is similar to the Mesh Sharpening tool but it applies a smoothing to the whole surface without preserving the edges.
  
 
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'''This tool is used automatically by the software for you with specific parameters. Use of this software with the wrong parameters may modify the shape and dimension of the objects'''.
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'''The software already applies this tool automatically using specific parameters. he use of this tool applying wrong parameters may modify the shape and dimension of the objects'''.
  
 
== Mesh Decimate == <!--T:10-->
 
== Mesh Decimate == <!--T:10-->
  
 
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This tool will try to reduce the number of triangle in a mesh, to save more space, trying to save the most details possible.
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This tool will try to reduce the number of triangles in a mesh, to save more space, trying to save as much detail as possible.
  
 
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On the top you can see the current number of triangles of the selected meshes.
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On the top is specified the current number of triangles of the selected meshes.
  
 
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You can input a percentage of triangle that you want to keep (For example 50% if you want to halve the mesh size).
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It is possible to input a percentage of triangles to be kept (For example 50% to halve the mesh size).
  
 
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Then you can put a tolerance. If the tolerance is enabled the software will stop the decimation if this will modify the mesh more than the tolerance parameter.  
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It is also possible to establish a tolerance value. If the tolerance is enabled the software will stop the decimation if this will modify the mesh more than the tolerance parameter.  
  
 
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Then you just need to click Apply to see the result.
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Just click on Apply to see the result.
  
 
== Mesh Defeature == <!--T:13-->
 
== Mesh Defeature == <!--T:13-->
  
 
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This tool take a selection of the mesh and it removes all the details, leaving the simpliest surface possible. It remove holes, spikes, noise. You just need to:
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This tool takes a selection of the mesh and it removes all the details, leaving the simpliest surface possible. It removes holes, spikes, noises. To use this tool:
  
 
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# Select the area where you want to remove all the ''Features'' with the [[Man_DataEditing#Selection_Tools|Selection Tools]]
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# Select the area in which it is necessary to remove all the ''Features'' with the [[Man_DataEditing#Selection_Tools|Selection Tools]]
 
# Apply the ''Mesh Defeature''
 
# Apply the ''Mesh Defeature''
  
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This tool take a mesh and search and remove the parts of the surface that are not ''Manifold'' as this [https://en.wikipedia.org/wiki/Manifold definition]
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This tool takes a mesh and searches for and removes the parts of the surface that are not ''Manifold'' as this [https://en.wikipedia.org/wiki/Manifold definition]
  
 
== Mesh Catenate == <!--T:17-->
 
== Mesh Catenate == <!--T:17-->
  
 
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This tool can be used only in [[Free_Mode|Free Mode]]. It takes all the mesh selected and create a single mesh merging all of the selected meshes togheter.
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This tool can be used only in [[Free_Mode|Free Mode]]. It takes all the selected meshed and creates a single mesh merging all of the selected meshes togheter.
  
 
== Flip Normals == <!--T:19-->
 
== Flip Normals == <!--T:19-->
  
 
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Every mesh has an inside and an outside. You can identify them because the software paint the inside with a different color. This tool flip the inside and the outside of the selected meshes.
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Every mesh has an inside and an outside. They are distingushed by the software by appliying a different color to the inside of the image. This tool flips the inside and the outside of the selected meshes.
  
 
== Detect Intersections == <!--T:21-->
 
== Detect Intersections == <!--T:21-->
  
 
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Sometimes is possible that part of the surface of a mesh intersect with the mesh itself, something that in reality is not possibile. This tool identify this situations and fix them
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Sometimes it is possible that part of the surface of a mesh intersect with the mesh itself, something that in reality is not possibile. This tool identifies this situations and fixes them
  
 
== Fill All Holes == <!--T:23-->
 
== Fill All Holes == <!--T:23-->
  
 
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This is an interactive tool that let you fill holes in the currently selected mesh.
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This is an interactive tool that allows to fill holes in the currently selected mesh.
  
 
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In the fill one mode the software will highlight the hole near the mouse cursor, and if you click with the left mouse button on the highlighted hole the sofware will close it.
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In the fill one mode the software will highlight the hole near the mouse cursor, and by clicking with the left mouse button on the highlighted hole the sofware will close it.
  
 
=== Fill All === <!--T:27-->
 
=== Fill All === <!--T:27-->
  
 
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In the fill all modes the software will try to close all the hodes. With the ''Filter By Size'' function you can select all the holes below one size and close only them. The selected holes will be highlighted in real time by the sofware.
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In the fill all mode the software will try to close all the holes. With the ''Filter By Size'' function it is possible to select all the holes below one size and close only those. The selected holes will be highlighted in real time by the sofware.
  
 
=== Curvature Filling === <!--T:29-->
 
=== Curvature Filling === <!--T:29-->
  
 
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There is an additional option, curvature filling. If this option is enabled the software will try to follow the curvature of the rest of the surface closing the hole. If it's disabled the software will ignore the rest of the surface and close the hole with a straight plane.
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There is an additional option: curvature filling. If this option is enabled the software will try to follow the curvature of the rest of the surface closing the hole. If it's disabled the software will ignore the rest of the surface and close the hole with a straight plane.
  
 
== Close Denturse == <!--T:31-->
 
== Close Denturse == <!--T:31-->
  
 
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When you scan an entire jaw you'll have a big hole at the base. This tool is made to close only that hole. Closing that hole with the Fill All Holes tool take a lot of time and the final result is not good enough.
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When scanning an entire jaw there will be a big hole at the base. This tool is made to close only that hole. Closing that hole with the Fill All Holes tool take a lot of time and the final result will not be good enough.
  
 
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With the close denturse tool the mesh will be closed with a perfect plane and is really fast.
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With the close denturse tool the mesh will be closed with a perfect plane in a reduced amount of time.
  
 
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This tool take a mesh and try to remove all the possible artifacts and problems.
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This tool takes a mesh and tries to remove all the possible artifacts and problems.
  
 
== Mesh Offset == <!--T:35-->  
 
== Mesh Offset == <!--T:35-->  
  
 
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This tool create a bigger/smaller version of the selected mesh. You can select how to change the mesh with the Offset [mm] parameter.
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This tool creates a bigger/smaller version of the selected mesh. You can select how to change the mesh with the Offset [mm] parameter.
  
 
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The three flags (Remesh, Sharpen and Optimize Vertices) has to remain checked.
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The three flags (Remesh, Sharpen and Optimize Vertices) have to remain checked.
  
 
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Normally none of this tool is needed to work because the strategies alread apply a selected sequence of this tool specific for every element.
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Normally none of these tools is needed to work because the strategies already apply a selected sequence of these tools specific for every element.
  
 
=Next= <!--T:38-->
 
=Next= <!--T:38-->

Revision as of 14:33, 21 August 2015

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Mesh Editing

When generating a mesh starting from data acquired by a scanner the meshes may not be perfect for the designated use.

The generated mesh may have artifacts, noises or holes that need to be fixed.

OpticalRevEng Dental already applies a different mesh generation strategy specific to each element, trying to fix all the problems automatically, however there could be the need to further edit the meshes before exporting them to another software.

In this page are described the Mesh Editing tools provided that can be found in the Mesh Menu and Mesh Toolbar.

Remove Spikes

A spike in a mesh is defined as a tiny part of the surface that is not actually part of the 3D object Acquired by the scanner.

These spikes are normally automatically corrected by the software during mesh generation, but if meshes are imported from other system there could be some of them.

This tool automatically removes all the found spikes and repair the mesh.

Before Remove Spikes
After Remove Spikes

Mesh Sharpening

The sharpening tool performs two actions at the same time. It smooths the parts of the surface that are more planar and it sharpens the edges. It takes 2 parameters:

  1. T [°] : This angle identifies what an edge is, all the parts of the surface that create an angle minor than T° will be sharpened. When this value is at 0 all the surface will be smoothed
  2. Normal Iterations : How many times the software will pass over the surface to do the sharpening. Bigger values mean more smmoting and more sharpening

The software already applies this tool automatically using specific parameters. The use of this tool applying wrong parameters may modify the shape and dimension of the objects.

Mesh Smooth

This tool is similar to the Mesh Sharpening tool but it applies a smoothing to the whole surface without preserving the edges.

The software already applies this tool automatically using specific parameters. he use of this tool applying wrong parameters may modify the shape and dimension of the objects.

Mesh Decimate

This tool will try to reduce the number of triangles in a mesh, to save more space, trying to save as much detail as possible.

Dental 2 5 decimate.jpg

On the top is specified the current number of triangles of the selected meshes.

It is possible to input a percentage of triangles to be kept (For example 50% to halve the mesh size).

It is also possible to establish a tolerance value. If the tolerance is enabled the software will stop the decimation if this will modify the mesh more than the tolerance parameter.

Just click on Apply to see the result.

Mesh Defeature

This tool takes a selection of the mesh and it removes all the details, leaving the simpliest surface possible. It removes holes, spikes, noises. To use this tool:

  1. Select the area in which it is necessary to remove all the Features with the Selection Tools
  2. Apply the Mesh Defeature

Make Manifold

This tool takes a mesh and searches for and removes the parts of the surface that are not Manifold as this definition

Mesh Catenate

This tool can be used only in Free Mode. It takes all the selected meshed and creates a single mesh merging all of the selected meshes togheter.

Flip Normals

Every mesh has an inside and an outside. They are distingushed by the software by appliying a different color to the inside of the image. This tool flips the inside and the outside of the selected meshes.

Detect Intersections

Sometimes it is possible that part of the surface of a mesh intersect with the mesh itself, something that in reality is not possibile. This tool identifies this situations and fixes them

Fill All Holes

This is an interactive tool that allows to fill holes in the currently selected mesh.

Dental 2 5 fillHoles.jpg

This tool can work in 2 different ways

Fill One

In the fill one mode the software will highlight the hole near the mouse cursor, and by clicking with the left mouse button on the highlighted hole the sofware will close it.

Fill All

In the fill all mode the software will try to close all the holes. With the Filter By Size function it is possible to select all the holes below one size and close only those. The selected holes will be highlighted in real time by the sofware.

Curvature Filling

There is an additional option: curvature filling. If this option is enabled the software will try to follow the curvature of the rest of the surface closing the hole. If it's disabled the software will ignore the rest of the surface and close the hole with a straight plane.

Close Denturse

When scanning an entire jaw there will be a big hole at the base. This tool is made to close only that hole. Closing that hole with the Fill All Holes tool take a lot of time and the final result will not be good enough.

With the close denturse tool the mesh will be closed with a perfect plane in a reduced amount of time.

This tool will not work if the mesh has other holes or artifacts.

Mesh Cleaning

This tool takes a mesh and tries to remove all the possible artifacts and problems.

Mesh Offset

This tool creates a bigger/smaller version of the selected mesh. You can select how to change the mesh with the Offset [mm] parameter.

The three flags (Remesh, Sharpen and Optimize Vertices) have to remain checked.

Normally none of these tools is needed to work because the strategies already apply a selected sequence of these tools specific for every element.

Next

You can now return to the Main Page or continue to the Implant Align page.

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