Difference between revisions of "Man DataEditing"

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{{DISPLAYTITLE:Data Editing|noerror}}
 
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{{DISPLAYTITLE:Data Editing}}
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=Editing= <!--T:1-->
  
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After you've acquired some information from the scanner you may need to clean the data from unwanted parts or from noise. Or you may want to remove some unwanted part of a mesh.
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<!--T:2-->
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After acquiring some information from the scanner, there might be the need to clean the data from unwanted parts or noises, or to remove some unwanted parts from a mesh.
  
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= Selecting Data =
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= Selecting Data = <!--T:3-->
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If you need to remove something you first need to select what you want to remove. You can use the '''Selection Tools''' that works on both acquisition and meshes or use one of the '''Select Outliers''' function that works only on acquisitions.
 
  
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== Selection Tools ==
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<!--T:17-->
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The selection tools are interactive tools that can be used dragging the mouse on the 3D View with the left click pressed down. A shape will appear following the mouse and all the information inside will be selected.
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First select the part of the image to be removed. The '''Selection Tools''' can be used on both, acquisitions and meshes, while the '''Select Outliers''' function only works on acquisitions.
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== Selection Tools == <!--T:4-->
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<!--T:18-->
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The selection tools are interactive tools that can be used dragging the mouse on the 3D View and holding its left button. A shape will appear, following the mouse, and all the information inside its borders will be selected.
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<!--T:19-->
 
The tools are:
 
The tools are:
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* '''Rectangular''': Draw a rectangle that start from the click point and grows following the mouse and stop when you stop pressing the left mouse button
 
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* '''Elliptical''' : Draw an ellipses centered in the click point that grows following the mouse and stop when you stop pressing the left mouse button
 
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* '''Polygonal''' : When you first click one time the software create a point, then it create another point every time you click. From the third point it create a polygon. When you double click the polygon is closed and all the data inside is selected
 
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* '''Free Closed Line''' : When you click the software start to draw a line that follow the mouse. When you stop pressing the left mouse button the line is closed with the first point and all the data insisde the closed line is selected
 
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* '''Free Open Line''' : When you click the software start to draw a line that follow the mouse. When yuou stop pressing the left mouse button all the data exatcly below the line is selected.
 
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* '''Segment''' : When you click the software start to draw a straight line between the click point and the current position of the mouse. When yuou stop pressing the left mouse button all the data exatcly below the line is selected.
 
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[[File:Dental_2_5_selectionTools.gif|center]]
 
  
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=== Unselect Data ===
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<!--T:20-->
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If you keep the CTRL key down instead to select data you'll unselect data.
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* '''Rectangular''': draws a rectangle that starts from the click point and grows following the mouse; to select, release the left mouse button
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=== Pass-Through Selection ===
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* '''Elliptical''' : draws an ellipse centered in the click point that grows following the mouse; to select, release the left mouse button
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The ''Pass through (CTRL+ALT+V) that you can find in the ''3D View Context Menu '' change how the selection works only on meshes.
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* '''Polygonal''' :  click in two different points to draw a line and a third point to create a polygon. Double click to close the polygon and select all the area inside its borders
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* '''Free Closed Line''' : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to close the line and select all the area inside its borders
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* '''Free Open Line''' : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to select all the data exactly below the drawn line
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* '''Segment''' : click and hold the left mouse button to draw a line and release the left mouse button to select all the data exactly below the segment.
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<!--T:21-->
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[[File:Dental_2_5_selectionTools.gif]]
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=== Unselect Data === <!--T:5-->
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<!--T:22-->
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While using one of the tools, hold {{Inline button|Key ctrl.png}} to unselect data instead of selecting it.
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=== Pass-Through Selection === <!--T:23-->
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<!--T:24-->
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The ''Pass through selection'', changes the behaviour of the selection and only works on meshes data.
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 +
<!--T:6-->
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Normally all the data inside the drawn area will be selected, even if not visible or hidden behind other mesh surfaces.
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<!--T:7-->
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By holding  {{Inline button|Key shift.png}} when finalizing the selection, only the visible part of the mesh will be selected. All the hidden parts, or the parts on the other side of the object, will not be selected.
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== Outlier Cleaning == <!--T:8-->
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<!--T:25-->
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''Outliers'' are all the points of an acquisition that are not part of the object surface, such as noises, reflections or acquisition defects.
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<!--T:9-->
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Each acquisition strategy already applies a specific outlier cleaning process. Therefore, data is often ready to be aligned and converted in mesh directly after the acquisition.
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 +
<!--T:26-->
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In order to remove outliers manually, use one of the three ''Select Outliers'' tools.
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=== Select Outliers === <!--T:10-->
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<!--T:27-->
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This tool identifies all the points that are ''isolated'', far from all the other points. Click on this tool button to open a window containing two parameters
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<!--T:28-->
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* Selectivity : how many points have to be near each other to consider them either isolated or not. The higher the value, the more points get selected
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* Strength : how close two points have to be to consider them as not isolated. The higher the value, the more points get selected
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<!--T:29-->
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When changing the parameters, the software will show the selection in real time. Click ''ok'' to confirm the selection.
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=== Select Outliers by Angle === <!--T:30-->
  
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If this option is disabled only the part of the mesh that you can see will be selected bye the selection tools. All that is hidden, or on the other side of the object will not be selected.
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<!--T:31-->
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This Outliers selection provides only one parameter: an angle. A point is considered an outlier only if there are no points near it that create an angle smaller than the one established by the parameters. The smaller the angle, the less points selected.  
  
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If the option is enabled all the data inside the selection tool shape will be selected, even if you can not see it or is hidden behind other mesh surfaces.
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<!--T:32-->
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When changing the parameters, the software will show the selection in real time. Click ''ok'' to confirm the selection.
  
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== Outlier Cleaning ==
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=== Select Outliers Segmentation === <!--T:11-->
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With the name ''Outlier'' are identified all the points of an acquisition that are not part of the object surface. They can be noise, reflections on the object surfaces or acquisition artifacts.
 
  
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The acquisition strategy used for every object already apply a specific outlier cleaning. In this way most of the time the data will be already good to be aligned, converted in mesh directly after the acquisition.
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<!--T:33-->
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This Outliers selection tool analyses blocks of points and not single points.
  
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If you want to further remove other outliers you can use one of the three ''Select Outliers'' tools
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== Base Selection == <!--T:12-->
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=== Select Outlier ===
 
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This is the most simple tool, it try to identify all the points that are ''alone'', far from all the other points. When you click on this tool button a windows will apper with two parameters
 
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* Selectivity : How many points need to be close to tell if a point is alone or not. High value means more points selected
 
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* Strength : How close two points need to be to be considered not alone. High value means more points selected
 
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As you change the parameters the software will show the selection in real time. Then you can click ''ok'' to confirm the selection.
 
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=== Select Outlier by Angle ===
 
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This tool works in a similar way to the ''Select Outlier'' tool there is only one parameter, an angle. A point is considered an outlier only if there are no point near him that create an angle smaller than the parameters. This mean that a smaller angle in the parameter will mean more points selected.
 
  
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As you change the parameters the software will show the selection in real time. Then you can click ''ok'' to confirm the selection.
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<!--T:34-->
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=== Select Outlier Segmentation ===
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To remove the ''Base'' of the acquisition (the part of the acquisition near the model holder) use the ''Cut Height'' Acquisition Tool.
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This tool works in the same way as the ''Select Outlier'' tool but analyze blocks of points and not single points.
 
  
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== Base Selection ==
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<!--T:13-->
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If you need to remove the ''Base'' of the acquisition, the part of the acquisition near the model holder, you can use the ''Cut Height'' Acquisition Tool.
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A slider will appear, which controls the height value. All the points below the chosen height will be selected.
  
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A slider will appear that change a height value. All the points below that height will be selected.
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<!--T:14-->
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When moving the slider, the software will show the selection in real time. Click ''ok'' to confirm the selection.
  
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As you move the slider the software will show the selection in real time. Then you can click ''ok'' to confirm the selection.
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= Editing Functions= <!--T:15-->
  
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= Editing Functions=
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<!--T:35-->
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When you have a selection ready you can use one of the following editing functions from the 3D View Context Menù, from the Edit Menù or with the appropriate keyboard shortcut:
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When a selection is performed, use one of the following editing functions either from the 3D View Context Menu, from the Edit Menu or using the related keyboard shortcuts:
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* Delete Selection (DEL) : Remove the currently selected data
 
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* Crop Selection (CTRL+K) : Keep only the selected data and remove all the rest
 
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* Invert Selection (CTRL + I) : Select all the data that is not selected and deselect the selected data
 
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* Clear Selection (CTRL + C) : Unselect all the data
 
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* Select All (CTRL + SHIFT + C) : Select all the data
 
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* Select Connected (ALT + SHIFT + D) : Only for meshes, extend the selection to get all the connected parts to the curretion selection area
 
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* Dilate Selection (CTRL + D) : Extend the selection a little bit to the data close to the actual selection
 
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* Erode Selection (CTRL + SHIFT + D) : Reduce the selection a little bit from the margin of the actual selection
 
  
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<!--T:36-->
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* Delete Selection (DEL) : deletes the currently selected data
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* Crop Selection ({{Inline button|Key ctrl.png}}+ K) : keeps only the selected data and removes all the rest
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* Invert Selection ({{Inline button|Key ctrl.png}}+ I) : selects all the data that is not selected and deselects the selected data
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* Clear Selection ({{Inline button|Key ctrl.png}}+ C) : deselects all the data
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* Select All ({{Inline button|Key ctrl.png}}+ {{Inline button|Key shift.png}}+ C) : selects all the data
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* Select Connected ({{Inline button|Key alt.png}}+ {{Inline button|Key shift.png}}+ D) : (only for meshes) extends the selection to get all the parts connected to the current selection area
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* Dilate Selection ({{Inline button|Key ctrl.png}}+ D) : extends the selection to the data adjacent to the actual selection
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* Erode Selection ({{Inline button|Key ctrl.png}}+ {{Inline button|Key shift.png}}+ D) : reduces the margins of the selection
  
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Now that you know how to select and clean Acquisitions and Meshes you can return to the [[Main_Page|Main Page]] or read about [[Man_Align|Data Alignment]]
 
 
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{{Navigation|Man_Acquisition|Man_Align}}

Latest revision as of 14:11, 7 December 2015


Editing

After acquiring some information from the scanner, there might be the need to clean the data from unwanted parts or noises, or to remove some unwanted parts from a mesh.

Selecting Data

First select the part of the image to be removed. The Selection Tools can be used on both, acquisitions and meshes, while the Select Outliers function only works on acquisitions.

Selection Tools

The selection tools are interactive tools that can be used dragging the mouse on the 3D View and holding its left button. A shape will appear, following the mouse, and all the information inside its borders will be selected.

The tools are:

  • Rectangular: draws a rectangle that starts from the click point and grows following the mouse; to select, release the left mouse button
  • Elliptical : draws an ellipse centered in the click point that grows following the mouse; to select, release the left mouse button
  • Polygonal : click in two different points to draw a line and a third point to create a polygon. Double click to close the polygon and select all the area inside its borders
  • Free Closed Line : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to close the line and select all the area inside its borders
  • Free Open Line : click and hold the left mouse button to start drawing a line that follows the mouse. Release the left mouse button to select all the data exactly below the drawn line
  • Segment : click and hold the left mouse button to draw a line and release the left mouse button to select all the data exactly below the segment.

Dental 2 5 selectionTools.gif

Unselect Data

While using one of the tools, hold Key ctrl.png to unselect data instead of selecting it.

Pass-Through Selection

The Pass through selection, changes the behaviour of the selection and only works on meshes data.

Normally all the data inside the drawn area will be selected, even if not visible or hidden behind other mesh surfaces.

By holding Key shift.png when finalizing the selection, only the visible part of the mesh will be selected. All the hidden parts, or the parts on the other side of the object, will not be selected.

Outlier Cleaning

Outliers are all the points of an acquisition that are not part of the object surface, such as noises, reflections or acquisition defects.

Each acquisition strategy already applies a specific outlier cleaning process. Therefore, data is often ready to be aligned and converted in mesh directly after the acquisition.

In order to remove outliers manually, use one of the three Select Outliers tools.

Select Outliers

This tool identifies all the points that are isolated, far from all the other points. Click on this tool button to open a window containing two parameters

  • Selectivity : how many points have to be near each other to consider them either isolated or not. The higher the value, the more points get selected
  • Strength : how close two points have to be to consider them as not isolated. The higher the value, the more points get selected

When changing the parameters, the software will show the selection in real time. Click ok to confirm the selection.

Select Outliers by Angle

This Outliers selection provides only one parameter: an angle. A point is considered an outlier only if there are no points near it that create an angle smaller than the one established by the parameters. The smaller the angle, the less points selected.

When changing the parameters, the software will show the selection in real time. Click ok to confirm the selection.

Select Outliers Segmentation

This Outliers selection tool analyses blocks of points and not single points.

Base Selection

To remove the Base of the acquisition (the part of the acquisition near the model holder) use the Cut Height Acquisition Tool.

A slider will appear, which controls the height value. All the points below the chosen height will be selected.

When moving the slider, the software will show the selection in real time. Click ok to confirm the selection.

Editing Functions

When a selection is performed, use one of the following editing functions either from the 3D View Context Menu, from the Edit Menu or using the related keyboard shortcuts:

  • Delete Selection (DEL) : deletes the currently selected data
  • Crop Selection (Key ctrl.png+ K) : keeps only the selected data and removes all the rest
  • Invert Selection (Key ctrl.png+ I) : selects all the data that is not selected and deselects the selected data
  • Clear Selection (Key ctrl.png+ C) : deselects all the data
  • Select All (Key ctrl.png+ Key shift.png+ C) : selects all the data
  • Select Connected (Key alt.png+ Key shift.png+ D) : (only for meshes) extends the selection to get all the parts connected to the current selection area
  • Dilate Selection (Key ctrl.png+ D) : extends the selection to the data adjacent to the actual selection
  • Erode Selection (Key ctrl.png+ Key shift.png+ D) : reduces the margins of the selection
Dental 2 5 wiz prev.png Homebutton.png Dental 2 5 wiz next.png
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