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--- visual3d:documentation:modeling:coordinate_system [2025/07/30 17:29] – sgranger
+++ visual3d:documentation:modeling:coordinate_system [2025/07/30 18:06] (current) – sgranger
@@ Line 68: / Line 68: @@
 **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>  |  {{:SegmentDefinition_ProxJC_DistLatMed.jpg}}|
+|**For example of Method 1, create the left shank segment with the following definition:** \\ **1. Create Left Shank Segment:** \\ In the **Segments** tab, select //Left Shank// in the Segment Name box. \\ Click on the **Create Segment** button. \\ In the **Left Shank** tab, enter these values: \\ **Define Proximal Joint and Radius** \\ **Lateral:** //None// **Joint:** //LKJC// **Medial:** //None// \\ **Radius:** //0.5*DISTANCE(LMK,LLK)// \\ **Define Distal Joint and Radius** //LLA// **Joint:** //None// **Medial:** //LMA// \\ **Select Tracking Targets:** \\ //LLA//, //LLK//, //LMA//, //LMK//, //LSK// \\ Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer. \\ Click on **Close Tab** before proceeding. | {{ :SegmentDefinition_ProxJC_DistLatMed.jpg}} |
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@@ Line 79: / Line 77: @@
 **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>  |  {{:SegmentDefinition_ProxLatMed_DistLatMed.jpg}}|
+|**For an example of Method 2, create the left shank segment with the following definition:** \\ **2. Create Left Shank Segment:** \\ **Segments** tab, select //Left Shank// in the Segment Name box. \\ Click on the **Create Segment** button. \\ In the **LSK_2** tab, enter these values: \\ **Define Proximal Joint and Radius** \\ **Lateral:** //LLK// **Joint:** //None// **Medial:** //LMK// \\ **Define Distal Joint and Radius** \\ **Lateral:** //LLA// **Joint:** //None// **Medial:** //LMA// \\ **Select Tracking Targets:** \\ //LLA//, //LLK//, //LMA//, //LMK//, //LSK// \\ Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer. \\ Click on **Close Tab** before proceeding. |  {{: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\\ \\   |  {{:SegmentDefinition_ProxLatMed_DistLatMed_ppt.jpg}}|
@@ Line 87: / Line 85: @@
 **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>  |  {{:SegmentDefinition_ProxJC_DistLat.jpg}}|
+|**For example of Method 3, create the left shank segment with the following definition:** \\ **3. Create Left Shank Segment:** \\ In the **Segments** tab, select //Left Shank// in the Segment Name box. \\ Click on the **Create Segment** button. \\ In the **LSK_3** tab, enter these values: \\ **Define Proximal Joint and Radius** \\ **Lateral:** //None// **Joint:** //LKJC// **Medial:** //None// \\ **Radius:** //0.5*DISTANCE(LLK,LMK)// \\ **Define Distal Joint and Radius** \\ **Lateral:** //LLA// **Joint:** //None// **Medial:** //None// \\ **Radius:** //0.5*DISTANCE(LLA,LMA)// \\ **Extra Target to Define Orientation** \\ **Location:** //Lateral// //LSK// \\ **Select Tracking Targets:** \\ //LLA//, //LLK//, //LMA//, //LMK//, //LSK// \\ Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer. \\ Click on **Close Tab** before proceeding. | {{: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\\ \\   |  {{:SegmentDefinition_ProxJC_DistLat_ppt.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 \\ 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 ====
@@ Line 95: / Line 93: @@
 **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>  |  {{:SegmentDefinition_ProxLat_DistLatMed.jpg}}|
+|**For example of Method 4, create the left shank segment with the following definition:** \\ **4. Create Left Shank Segment:** \\ In the **Segments** tab, select //Left Shank// in the Segment Name box. \\ Click on the **Create Segment** button. \\ **Define Proximal Joint and Radius** \\ **Lateral:** //LLK// **Joint:** //None// **Medial:** //None// \\ **Radius:** //0.5*DISTANCE(LLK,LMK)// \\ **Joint:** //None// \\ **Radius:** \\ **Extra Target to Define Orientation** \\ **Location:** //Lateral// //LSK// \\ **Select Tracking Targets:** \\ //LLA//, //LLK//, //LMA//, //LMK//, //LSK// \\ Click on **Build Model.** A 3D image of a shank will appear in the 3D viewer. \\ Click on **Close Tab** before proceeding. |  {{: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\\ \\   |  {{:SegmentDefinition_ProxLat_DistLat_ppt.jpg}}|