Difference between revisions of "Man Align"

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When you acquire more than one object from the scanner they will be in different positions. To correctly work with the scanner data you need to bring all the Acquisition to the same position reference.   
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When more than one object is acquired by the scanner, the position of each item is unrelated to the position of the others. To correctly work with the scanned data all the Acquisitions need to be located in the same reference system.   
  
 
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For this you first need to identify an Acquisition that will be used as a reference for all the others. In the '''Structured Projects''' this is done automatically by the software.  
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First identify an Acquisition that will be used as a reference for all the others. In the '''Structured Projects''' the software automatically carries out this procedure.  
  
 
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Then every time you acquire a new information you need to ''align'' the new data to the '''Reference Acquisition''' or to '''another acquisition already aligned at the rest of the project'''
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Every time a new information gets acquired it is necessary to ''align'' the new data to the '''Reference Acquisition''' or to '''another acquisition already aligned at the rest of the project'''
  
 
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OpticalRevEng Dental can align the Acquisitions for you. You just need to:
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OpticalRevEng Dental can align the Acquisitions by itself. Just:
  
 
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# Select from the Project Tree the element you want to align to the rest of the project
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# Select from the Project Tree the element to be aligned to the rest of the project
 
# Click the ''Alignment Button'' in the [[Main_Toolbar|Main Toolbar]]
 
# Click the ''Alignment Button'' in the [[Main_Toolbar|Main Toolbar]]
  
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The manual alignment is started every time the software can not complete a '''Direct Alignment''' or if you keep down the SHIFT button when you click the ''Alignment Button'' in the [[Main_Toolbar|Main Toolbar]]
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The manual alignment is launched every time the software can not complete a '''Direct Alignment''' or by holding the SHIFT key when clicking the ''Alignment Button'' in the [[Main_Toolbar|Main Toolbar]]
  
 
== Interface == <!--T:16-->
 
== Interface == <!--T:16-->
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You can see 4 different zones of this screen:
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There are 4 different areas in this screen:
  
 
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* On the '''top left''' you can see the ''reference object'' that give you the position reference for all the proejct data
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* On the '''top left''' there is the ''reference object'' that gives the reference  position for all the proejct data
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* On the '''top right''' you can see the ''moving object'' that we want to move from his currant position to bring it in the same reference of all the other project data
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* On the '''top right''' there is the ''moving object'' that has to be moved from his current position to place it in the same reference system of all the other project data
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* On the '''bottom''' you can see ''both the objects'' togheter to check the current positions of the moving object
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* On the '''bottom''' are visible at the same time ''both the objects'' to check the current positions of the moving object
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* On the '''bottom right''' you have some options and a ''Numeric Report''
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* On the '''bottom right''' some options and a ''Numeric Report'' are available
  
 
== Procedure == <!--T:21-->
 
== Procedure == <!--T:21-->
  
 
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What you have to do now is:
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To manual align:
  
 
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# Rotate both the reference object and the moving object in a way that you can see some common part between the two object from the same point of view
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# Rotate both the reference object and the moving object in the same point of view to see some common part between the two objects
 
# Click on the same point on both the objects
 
# Click on the same point on both the objects
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# Check on the bottom 3D view that the position is more or less correct (It's not needed to be in the perfect position now)
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# Check on the bottom 3D view if the position is more or less correct (It's not necessary for them to be in a perfect position at this stage)
 
# Click the '''Best Fit''' button on the right
 
# Click the '''Best Fit''' button on the right
  
 
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If the two object have enough common points the software will find the best alignment between the two. You can check this alignment visually on the bottom 3D View or reading the values in the Numeric Report.   
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If the two objects have enough common points the software will find the best alignment between the two. Check the alignment visually on the bottom 3D View or reading the values in the Numeric Report.   
  
 
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If the alignment is good you can click '''Ok''' to confirm the new position of the ''moving object''.
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If the alignment is good Click '''Ok''' to confirm the new position of the ''moving object''.
  
 
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If the alignment is not good enough you can click the '''Reset''' button and start the alignment again.
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If the alignment is not good enough Click the '''Reset''' button and start the alignment again.
  
 
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There are two options availables during the manual aligment:
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There are two options available during the manual aligment:
  
 
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# '''Fine Alignment''' : When you click ''Best Fit'' the software will try to move the moving object up to 1mm to find a bettere alignment. This can create problems if the common part between the two objects is really small. With '''Fine Aligment''' enabled the software will move the moving object not more than 0.1mm
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# '''Fine Alignment''' : By clicking ''Best Fit'' the software will try to move the moving object up to 1mm to find a better alignment. This can create problems if the common part between the two objects is really small. With '''Fine Aligment''' enabled the software will move the moving object not more than 0.1mm
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# '''Ignore Normals''' : The objects have an inside and an outside. When the software search for an alignment it refuse to align the inside of one object with the outouside of the other. If you want to ignore the differences between inside and outside you can check the '''Ingore Normals''' option
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# '''Ignore Normals''' : The objects have an inside and an outside. When the software searches for an alignment it refuses to align the inside of one object with the outouside of the other. To ignore the differences between inside and outside Check the '''Ingore Normals''' option
  
 
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Revision as of 12:30, 29 July 2015

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Alignment

When more than one object is acquired by the scanner, the position of each item is unrelated to the position of the others. To correctly work with the scanned data all the Acquisitions need to be located in the same reference system.

First identify an Acquisition that will be used as a reference for all the others. In the Structured Projects the software automatically carries out this procedure.

Every time a new information gets acquired it is necessary to align the new data to the Reference Acquisition or to another acquisition already aligned at the rest of the project

Every acquired information will have a specific Reference Acquisition. The Project Tree will show this relation, every child will be aligned to his parent node in the tree.

Direct Alignment

OpticalRevEng Dental can align the Acquisitions by itself. Just:

  1. Select from the Project Tree the element to be aligned to the rest of the project
  2. Click the Alignment Button in the Main Toolbar

The software will select the most appropriate reference item, analyze the selcted acquisition and the reference item, and try to identify the correct position of the selected item inside the reference item.
If no alignment can be identified by the software then a Manual Alignment will start.

Manual Alignment

The manual alignment is launched every time the software can not complete a Direct Alignment or by holding the SHIFT key when clicking the Alignment Button in the Main Toolbar

Interface

During the manual alignment the interface will change.

Dental 2 5 manualAlignment.jpg

There are 4 different areas in this screen:

  • On the top left there is the reference object that gives the reference position for all the proejct data
  • On the top right there is the moving object that has to be moved from his current position to place it in the same reference system of all the other project data
  • On the bottom are visible at the same time both the objects to check the current positions of the moving object
  • On the bottom right some options and a Numeric Report are available

Procedure

To manual align:

  1. Rotate both the reference object and the moving object in the same point of view to see some common part between the two objects
  2. Click on the same point on both the objects
  3. Check on the bottom 3D view if the position is more or less correct (It's not necessary for them to be in a perfect position at this stage)
  4. Click the Best Fit button on the right

If the two objects have enough common points the software will find the best alignment between the two. Check the alignment visually on the bottom 3D View or reading the values in the Numeric Report.

If the alignment is good Click Ok to confirm the new position of the moving object.

If the alignment is not good enough Click the Reset button and start the alignment again.

Dental 2 5 manualAlignmentAnim.gif

Options

There are two options available during the manual aligment:

  1. Fine Alignment : By clicking Best Fit the software will try to move the moving object up to 1mm to find a better alignment. This can create problems if the common part between the two objects is really small. With Fine Aligment enabled the software will move the moving object not more than 0.1mm
  2. Ignore Normals : The objects have an inside and an outside. When the software searches for an alignment it refuses to align the inside of one object with the outouside of the other. To ignore the differences between inside and outside Check the Ingore Normals option

Next

Now that you know how to align an object to the rest of the project you can return to the Main Page or continue to the Mesh Generation page

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