open source pkg v1

pkg/OpenFace/matlab_version/PDM_helpers/TangentSpaceTransform.m

@@ -0,0 +1,17 @@
+function [ transformedX, transformedY, transformedZ ] = TangentSpaceTransform( x, y, z, meanShape )
+%TANGENTSPACETRANSFORM Summary of this function goes here
+%   Detailed explanation goes here
+
+    scaling = [ x y z] * [ meanShape(:,1)' meanShape(:,2)' meanShape(:,3)']';
+    for i=1:size(x,1)
+        x(i,:) = x(i,:) * (1 / scaling(i));
+        y(i,:) = y(i,:) * (1 / scaling(i));
+        z(i,:) = z(i,:) * (1 / scaling(i));
+    end
+    
+    transformedX = x * mean(scaling);
+    transformedY = y * mean(scaling);
+    transformedZ = z * mean(scaling);
+    
+end
+