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visual3d:documentation:modeling:coordinate_system [2024/06/14 17:23] – created sgrangervisual3d:documentation:modeling:coordinate_system [2024/07/17 15:45] (current) – created sgranger
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-|**Language:**|** English**  • [[index.php?title=Coordinate_System/fr&action=edit&redlink=1|français]] • [[index.php?title=Coordinate_System/it&action=edit&redlink=1|italiano]] • [[index.php?title=Coordinate_System/pt&action=edit&redlink=1|português]] • [[index.php?title=Coordinate_System/es&action=edit&redlink=1|español]] ****|+====== Coordinate System  ======
  
-|===== Contents =====\\ \\ \\ \\ * [[#Introduction|1 Introduction]]\\   * [[#More_Information|1.1 More Information]]\\   * [[#Target_Labels|1.2 Target Labels]]\\ * [[#Segment_Definition|2 Segment Definition]]\\   * [[#RadiusA_vs_RadiusB|2.1 **//RadiusA// vs RadiusB** ]]\\   * [[#Targets_vs_Landmarks|2.2 **Targets vs Landmarks**]]\\   * [[#Method_1|2.3 Method 1]]\\   * [[#Method_2|2.4 Method 2]]\\   * [[#Method_3|2.5 Method 3]]\\   * [[#Method_4|2.6 Method 4]]\\ * [[#InferiorSuperior_Axis_Orientation|3 InferiorSuperior Axis Orientation]]\\ * [[#Segment_Coordinate_System_Definition|4 Segment Coordinate System Definition]]| +===== Introduction =====
- +
-====== Introduction ======+
  
 Before building a model, it is important to understand how a Segment Coordinate System (SCS) is created in Visual3D. Before building a model, it is important to understand how a Segment Coordinate System (SCS) is created in Visual3D.
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-==== More Information ====+=== More Information ===
  
 This information can also be downloaded as a power point from [[https://www.has-motion.com/download/examples/SegmentCoordinateSystem/SegmentCoordinateSystem_V3D.zip|here]].\\ This information can also be downloaded as a power point from [[https://www.has-motion.com/download/examples/SegmentCoordinateSystem/SegmentCoordinateSystem_V3D.zip|here]].\\
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 The [[https://www.youtube.com/watch?v=lnk9ozE2mP8&list=PLTej4Cu65m796l1tudcF_-r5e_3jKZVo6&index=3|YouTube Tutorial on Segment Definition]] creates several coordinate systems for the shank segment using various targets to define the proximal and distal ends of the segment. The [[https://www.youtube.com/watch?v=lnk9ozE2mP8&list=PLTej4Cu65m796l1tudcF_-r5e_3jKZVo6&index=3|YouTube Tutorial on Segment Definition]] creates several coordinate systems for the shank segment using various targets to define the proximal and distal ends of the segment.
  
-===== Target Labels =====+==== Target Labels ====
  
 In this tutorial the following target labels are used:\\ In this tutorial the following target labels are used:\\
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-====== Segment Definition ======+===== Segment Definition =====
  
 There are many possible options to define a segment. Visual3D will use the specified targets to define the anatomical plane and the joint centers. Depending on the specified targets, Visual3D will use different methods to define the segment joint centers.\\ There are many possible options to define a segment. Visual3D will use the specified targets to define the anatomical plane and the joint centers. Depending on the specified targets, Visual3D will use different methods to define the segment joint centers.\\
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-|**[[#Method_1|1) Method 1:]]**\\ **Proximal End:** 1 Joint center [[#Targets_vs_Landmarks|landmark]] //& [[#RadiusA_vs_RadiusB|RadiusA]]//\\ **Distal End:** 1 Lateral & 1 medial target\\ **Extra target to Define Orientation:** None\\ \\ **[[#Method_2|2) Method 2:]]**\\ **Proximal End:** 1 Lateral & 1 medial target\\ **Distal End:** 1 Lateral & 1 medial target\\ **Extra target to Define Orientation:** None\\ \\ **[[#Method_3|3) Method 3:]]**\\ **Proximal End:** 1 Joint center [[#Targets_vs_Landmarks|landmark]] //& [[#RadiusA_vs_RadiusB|RadiusA]]//\\ **Distal End:** 1 Lateral target & RadiusB\\ **Extra target to Define Orientation:** Lateral target\\ \\ **[[#Method_4|4) Method 4:]]**\\ **Proximal End:** 1 Lateral target & [[#RadiusA_vs_RadiusB|RadiusB]]\\ **Distal End:** 1 Lateral target & [[#RadiusA_vs_RadiusB|RadiusB]]\\ **Extra target to Define Orientation:** Lateral target\\   |  [[File:SegmentDefinitionBlank_Shank.jpg|{{/images/thumb/1/1a/SegmentDefinitionBlank_Shank.jpg/250px-SegmentDefinitionBlank_Shank.jpg?250x393|caption}}]]|+|**[[#Method_1|1) Method 1:]]**\\ **Proximal End:** 1 Joint center [[#Targets_vs_Landmarks|landmark]] //& [[#RadiusA_vs_RadiusB|RadiusA]]//\\ **Distal End:** 1 Lateral & 1 medial target\\ **Extra target to Define Orientation:** None\\ \\ **[[#Method_2|2) Method 2:]]**\\ **Proximal End:** 1 Lateral & 1 medial target\\ **Distal End:** 1 Lateral & 1 medial target\\ **Extra target to Define Orientation:** None\\ \\ **[[#Method_3|3) Method 3:]]**\\ **Proximal End:** 1 Joint center [[#Targets_vs_Landmarks|landmark]] //& [[#RadiusA_vs_RadiusB|RadiusA]]//\\ **Distal End:** 1 Lateral target & RadiusB\\ **Extra target to Define Orientation:** Lateral target\\ \\ **[[#Method_4|4) Method 4:]]**\\ **Proximal End:** 1 Lateral target & [[#RadiusA_vs_RadiusB|RadiusB]]\\ **Distal End:** 1 Lateral target & [[#RadiusA_vs_RadiusB|RadiusB]]\\ **Extra target to Define Orientation:** Lateral target\\   |  {{:SegmentDefinitionBlank_Shank.jpg}}|
  
-= RadiusA vs RadiusB  =+**//RadiusA// vs RadiusB**\\
  
 //RadiusA// - When the joint center landmark is the only target used to define the proximal or distal end, it is necessary to enter the segment radius, but this value will not be used to define the joint center (because it is already defined).\\ //RadiusA// - When the joint center landmark is the only target used to define the proximal or distal end, it is necessary to enter the segment radius, but this value will not be used to define the joint center (because it is already defined).\\
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-= Targets vs Landmarks = +**Targets vs Landmarks**
 In this document, referencing "targets" indicates motion capture markers and "[[Visual3D:Documentation:Modeling:Landmarks:Landmarks_Overview#Landmarks_Overview|landmarks]]" indicate virtual markers. In this document, referencing "targets" indicates motion capture markers and "[[Visual3D:Documentation:Modeling:Landmarks:Landmarks_Overview#Landmarks_Overview|landmarks]]" indicate virtual markers.
  
 In this document, there is not a distinction between the definition of a landmark, so the term "landmark" could refer to [[Visual3D:Documentation:Modeling:Functional_Joints:Functional_Joints|Functional Landmarks]], [[Visual3D:Documentation:Modeling:Landmarks:Digitizing_Pointer|Digitized Landmarks]], relative landmarks, etc. In this document, there is not a distinction between the definition of a landmark, so the term "landmark" could refer to [[Visual3D:Documentation:Modeling:Functional_Joints:Functional_Joints|Functional Landmarks]], [[Visual3D:Documentation:Modeling:Landmarks:Digitizing_Pointer|Digitized Landmarks]], relative landmarks, etc.
  
-===== Method 1 =====+==== Method 1 ====
  
 **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.** **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.**
  
-|**For example of Method 1, create the left shank segment with the following definition:**\\ **1. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **Left Shank** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //None//     **Joint:** //LKJC//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LMK,LLK)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //LMA//     \\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  [[File:SegmentDefinition_ProxJC_DistLatMed.jpg|{{/images/thumb/4/4a/SegmentDefinition_ProxJC_DistLatMed.jpg/250px-SegmentDefinition_ProxJC_DistLatMed.jpg?250x394|caption}}]]|+|**For example of Method 1, create the left shank segment with the following definition:**\\ **1. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **Left Shank** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //None//     **Joint:** //LKJC//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LMK,LLK)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //LMA//     \\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  {{:SegmentDefinition_ProxJC_DistLatMed.jpg}}|
  
 \\ \\
  
  
-|\\ **When using a proximal joint center and the mediolateral distal targets to define the segment, the distal joint center is defined by:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 2) Find the midpoint between the mediolateral targets\\ 3) The distal joint center is defined at the midpoints\\ \\   |  [[File:SegmentDefinition_ProxJC_DistLatMed_ppt.jpg|{{/images/thumb/1/16/SegmentDefinition_ProxJC_DistLatMed_ppt.jpg/250px-SegmentDefinition_ProxJC_DistLatMed_ppt.jpg?250x231|caption}}]]|+|\\ **When using a proximal joint center and the mediolateral distal targets to define the segment, the distal joint center is defined by:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 2) Find the midpoint between the mediolateral targets\\ 3) The distal joint center is defined at the midpoints\\ \\   |  {{:SegmentDefinition_ProxJC_DistLatMed_ppt.jpg}}|
  
-===== Method 2 =====+==== Method 2 ====
  
 **In this example, four border targets are used. A plane is defined by three points, so when four targets are used, the frontal plane is fit between the four targets using a least square fit. The least squares fit is applied such that the sum of squares distance between the targets and the frontal plane is minimized.** **In this example, four border targets are used. A plane is defined by three points, so when four targets are used, the frontal plane is fit between the four targets using a least square fit. The least squares fit is applied such that the sum of squares distance between the targets and the frontal plane is minimized.**
  
-|**For an example of Method 2, create the left shank segment with the following definition:**\\ **2. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_2** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //LLK//     **Joint:** //None//     **Medial:** //LMK//     \\    <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //LMA//     \\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  [[File:SegmentDefinition_ProxLatMed_DistLatMed.jpg|{{/images/thumb/a/a9/SegmentDefinition_ProxLatMed_DistLatMed.jpg/250px-SegmentDefinition_ProxLatMed_DistLatMed.jpg?250x394|caption}}]]|+|**For an example of Method 2, create the left shank segment with the following definition:**\\ **2. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_2** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //LLK//     **Joint:** //None//     **Medial:** //LMK//     \\    <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //LMA//     \\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  {{:SegmentDefinition_ProxLatMed_DistLatMed.jpg}}|
  
-|\\ **When using a proximal joint center and the mediolateral distal targets to define the segment, the distal joint center is defined by:**\\ 1) Define the anatomical plane (purple box) using the least squares fit to define the plane between the four targets\\ 2) Find the midpoint between the proximal mediolateral targets\\ 3) The proximal joint center is defined at the midpoint\\ 4) Find the midpoint between the distal mediolateral targets\\ 5) The distal joint center is defined at the midpoint\\ \\   |  [[File:SegmentDefinition_ProxLatMed_DistLatMed_ppt.jpg|{{/images/thumb/f/ff/SegmentDefinition_ProxLatMed_DistLatMed_ppt.jpg/250px-SegmentDefinition_ProxLatMed_DistLatMed_ppt.jpg?250x231|caption}}]]|+|\\ **When using a proximal joint center and the mediolateral distal targets to define the segment, the distal joint center is defined by:**\\ 1) Define the anatomical plane (purple box) using the least squares fit to define the plane between the four targets\\ 2) Find the midpoint between the proximal mediolateral targets\\ 3) The proximal joint center is defined at the midpoint\\ 4) Find the midpoint between the distal mediolateral targets\\ 5) The distal joint center is defined at the midpoint\\ \\   |  {{:SegmentDefinition_ProxLatMed_DistLatMed_ppt.jpg}}|
  
-===== Method 3 =====+==== Method 3 ====
  
 **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.** **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.**
  
-|**For example of Method 3, create the left shank segment with the following definition:**\\ **3. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_3** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //None//     **Joint:** //LKJC//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLK,LMK)//<HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLA,LMA)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Extra Target to Define Orientation**\\    **Location:** //Lateral//     //LSK//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  [[File:SegmentDefinition_ProxJC_DistLat.jpg|{{/images/thumb/1/1d/SegmentDefinition_ProxJC_DistLat.jpg/250px-SegmentDefinition_ProxJC_DistLat.jpg?250x394|caption}}]]|+|**For example of Method 3, create the left shank segment with the following definition:**\\ **3. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_3** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //None//     **Joint:** //LKJC//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLK,LMK)//<HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLA,LMA)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Extra Target to Define Orientation**\\    **Location:** //Lateral//     //LSK//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  {{:SegmentDefinition_ProxJC_DistLat.jpg}}|
  
-|\\ **When using a proximal joint center and the lateral distal target to define the segment:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 2) Draw a circle with radius "Rd" around the lateral distal target\\ ^D^ 3) Draw a vector from the proximal joint center that forms a right angle with the radius of the circle\\ 4) The joint center is at the location where the two vectors meet\\ \\   |  [[File:SegmentDefinition_ProxJC_DistLat_ppt.jpg|{{/images/thumb/1/1d/SegmentDefinition_ProxJC_DistLat_ppt.jpg/250px-SegmentDefinition_ProxJC_DistLat_ppt.jpg?250x271|caption}}]]|+|\\ **When using a proximal joint center and the lateral distal target to define the segment:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 2) Draw a circle with radius "Rd" around the lateral distal target\\ ^D^ 3) Draw a vector from the proximal joint center that forms a right angle with the radius of the circle\\ 4) The joint center is at the location where the two vectors meet\\ \\   |  {{:SegmentDefinition_ProxJC_DistLat_ppt.jpg}}|
  
-===== Method 4 =====+==== Method 4 ====
  
 **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.** **In this example, three border targets are used. So the frontal plane is simply the plane defined by the three targets.**
  
-|**For example of Method 4, create the left shank segment with the following definition:**\\ **4. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_4** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //LLK//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLK,LMK)//<HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLA,LMA)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Extra Target to Define Orientation**\\    **Location:** //Lateral//     //LSK//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  [[File:SegmentDefinition_ProxLat_DistLatMed.jpg|{{/images/thumb/c/cf/SegmentDefinition_ProxLat_DistLatMed.jpg/250px-SegmentDefinition_ProxLat_DistLatMed.jpg?250x394|caption}}]]|+|**For example of Method 4, create the left shank segment with the following definition:**\\ **4. Create Left Shank Segment:**\\ \\ <HTML><ol></HTML>\\ <HTML><li></HTML>In the **Segments** tab, select //Left Shank// in the Segment Name box.<HTML></li></HTML>\\ <HTML><li></HTML>Click on the **Create Segment** button.<HTML></li></HTML>\\ <HTML><li></HTML>In the **LSK_4** tab, enter these values:\\ \\ |<HTML><p></HTML>   **Define Proximal Joint and Radius**\\    **Lateral:** //LLK//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLK,LMK)//<HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Define Distal Joint and Radius**\\    **Lateral:** //LLA//     **Joint:** //None//     **Medial:** //None//     \\    **Radius:** //0.5*DISTANCE(LLA,LMA)//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Extra Target to Define Orientation**\\    **Location:** //Lateral//     //LSK//\\ <HTML></p></HTML>\\ \\ <HTML><p></HTML>   **Select Tracking Targets:**\\      //LLA//, //LLK//, //LMA//, //LMK//, //LSK//\\ <HTML></p></HTML>||<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer.<HTML></li></HTML>\\ <HTML><li></HTML>Click on **Close Tab** before proceeding.<HTML></li></HTML><HTML></ol></HTML>  |  {{:SegmentDefinition_ProxLat_DistLatMed.jpg}}|
  
-|\\ **When using a proximal joint center and the lateral distal target to define the segment:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 1) Draw a circle with radius "Rp" around the lateral proximal target\\ 2) Draw a circle with radius "Rd" around the lateral distal target\\ 3) Drawing a vector on the "medial" side of the circle that forms a right angle with the radius of the proximal and distal circles\\ 4) The joint centers are at the locations where the vector meet the radii\\ \\   |  [[File:SegmentDefinition_ProxLat_DistLat_ppt.jpg|{{/images/thumb/0/02/SegmentDefinition_ProxLat_DistLat_ppt.jpg/250px-SegmentDefinition_ProxLat_DistLat_ppt.jpg?250x231|caption}}]]|+|\\ **When using a proximal joint center and the lateral distal target to define the segment:**\\ 1) Define the anatomical plane (purple triangle) using the three targets\\ 1) Draw a circle with radius "Rp" around the lateral proximal target\\ 2) Draw a circle with radius "Rd" around the lateral distal target\\ 3) Drawing a vector on the "medial" side of the circle that forms a right angle with the radius of the proximal and distal circles\\ 4) The joint centers are at the locations where the vector meet the radii\\ \\   |  {{:SegmentDefinition_ProxLat_DistLat_ppt.jpg}}|
  
-====== InferiorSuperior Axis Orientation ======+===== InferiorSuperior Axis Orientation =====
  
 The Inferior/Superior is aligned with the vector which is drawn from the distal joint center to the proximal joint center.\\ The Inferior/Superior is aligned with the vector which is drawn from the distal joint center to the proximal joint center.\\
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-|**[[#Method_1|1) Method 1:]]**\\ [[File:SegmentDefinition_ProxJC_DistLatMed_ppt_M.jpg|{{/images/thumb/b/b9/SegmentDefinition_ProxJC_DistLatMed_ppt_M.jpg/250px-SegmentDefinition_ProxJC_DistLatMed_ppt_M.jpg?250x231|caption}}]]  |**[[#Method_2|2) Method 2:]]**\\ [[File:SegmentDefinition_ProxLatMed_DistLatMed_ppt_M.jpg|{{/images/thumb/3/3e/SegmentDefinition_ProxLatMed_DistLatMed_ppt_M.jpg/250px-SegmentDefinition_ProxLatMed_DistLatMed_ppt_M.jpg?250x231|caption}}]]  | +|**[[#Method_1|1) Method 1:]]**\\ {{:SegmentDefinition_ProxJC_DistLatMed_ppt_M.jpg}}  |**[[#Method_2|2) Method 2:]]**\\ {{:SegmentDefinition_ProxLatMed_DistLatMed_ppt_M.jpg}}  |
- +
-|**[[#Method_3|3) Method 3:]]**\\ [[File:SegmentDefinition_ProxJC_DistLat_ppt_M.jpg|{{/images/thumb/d/dd/SegmentDefinition_ProxJC_DistLat_ppt_M.jpg/250px-SegmentDefinition_ProxJC_DistLat_ppt_M.jpg?250x271|caption}}]]  |**[[#Method_4|4) Method 4:]]**\\ [[File:SegmentDefinition_ProxLat_DistLat_ppt_M.jpg|{{/images/thumb/d/d8/SegmentDefinition_ProxLat_DistLat_ppt_M.jpg/250px-SegmentDefinition_ProxLat_DistLat_ppt_M.jpg?250x231|caption}}]]  |+
  
-====== Segment Coordinate System Definition ======+|**[[#Method_3|3) Method 3:]]**\\ {{:SegmentDefinition_ProxJC_DistLat_ppt_M.jpg}}  |**[[#Method_4|4) Method 4:]]**\\ {{:SegmentDefinition_ProxLat_DistLat_ppt_M.jpg}}  |
  
-|Visual3D will then create the segment coordinate system using the anatomical plane and joint centers defined. Explanation of the segment coordinate system is defined [[Visual3D:Documentation:Modeling:Segments:Segment_Coordinate_System|here]].  |  [[File:PPT_SegmentCoordinateSystem.jpg|{{/images/thumb/3/3a/PPT_SegmentCoordinateSystem.jpg/100px-PPT_SegmentCoordinateSystem.jpg?100x186}}]]|+===== Segment Coordinate System Definition =====
  
 +|Visual3D will then create the segment coordinate system using the anatomical plane and joint centers defined. Explanation of the segment coordinate system is defined [[Visual3D:Documentation:Modeling:Segments:Segment_Coordinate_System|here]].  |  {{:PPT_SegmentCoordinateSystem.jpg}}|
  
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visual3d/documentation/modeling/coordinate_system.1718385821.txt.gz · Last modified: 2024/06/14 17:23 by sgranger