clarification comments in gem_e4_oak.yaml

Author: AadarshHegde123

GEMstack/knowledge/calibration/gem_e4_oak.yaml

@@ -1,7 +1,8 @@
+# Calibration for front rgb camera->vehicle on GEM e4
 # Calibration Date: 02/25/2025 05:09
 
 reference: rear_axle_center  # rear axle center
-rotation: [[ 0.00349517, -0.03239524, 0.99946903], # rotation camera -> vehicle
+rotation: [[ 0.00349517, -0.03239524, 0.99946903], # rotation component of camera -> vehicle matrix
           [-0.99996547,  0.00742285,  0.0037375],
           [-0.00753999, -0.99944757, -0.03236817]] # rotation matrix mapping z to forward, x to left, y to down, guesstimated
-center_position: [ 1.75864913, 0.01238124, 1.54408419] # translation camera -> vehicle meters, center camera, guesstimated
+center_position: [ 1.75864913, 0.01238124, 1.54408419] # translation component of camera -> vehicle matrix (in meters)