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--- visual3d:documentation:pipeline:signal_commands:compute_volume_of_chest_wall [2024/07/03 17:29] – removed sgranger
+++ visual3d:documentation:pipeline:signal_commands:compute_volume_of_chest_wall [2024/07/17 15:46] (current) – created sgranger
@@ Line 1: / Line 1: @@
+====== Compute Volume Of Chest Wall ======
+This command is based on the article by Ferrigno et al (1994) J Appl Physiol 77(3) 1224-1231.
+==== Marker Placement ====
+The command expects all 32 vertices described in the article.
+If any markers/landmarks are missing in a frame, no volume is computed.
+{{:ChestWall1.jpg}}
+\\
+==== Pipeline Command ====
+**Compute_Volume_Of_Chest_Wall**
+/SIGNAL_TYPES=TARGET
+/SIGNAL_NAMES=1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32
+/SIGNAL_FOLDER=ORIGINAL
+/RESULT_NAME=VOLUME
+! /RESULT_FOLDER=PROCESSED
+**;**
+==== Units ====
+Visual3D uses MKS units throughout the analyses. The only exceptions are joint angles which are represented in degrees.
+The units for the volume are therefore m^3
+Note that 1 m^3= 1000 liters
+==== Compute_Volume_Of_A_Convex_Hull ====
+{{:ChestWall2.jpg}}
+In Figure 2 the volume of the highlighted volume can be computed as a convex hull.
+The volume of the chest wall is the sum of the volumes of the sub regions.
+=== Output signal ===
+The resulting signal contains two components. The first component is the volume The second component is the number of vertices that were available at that frame for computing the volume.