X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=colorspace_conversion_effect.cpp;fp=colorspace_conversion_effect.cpp;h=0e2425593acfe18da75824b56beb2748672c5c27;hp=5406e1b856f9506e5731e8511eed141c15169dfd;hb=4a2924ab769a4a551a15c78336191117c03d39a8;hpb=1cc8eb50a9dbd0ef6c187a57ded6364215367cb5

diff --git a/colorspace_conversion_effect.cpp b/colorspace_conversion_effect.cpp
index 5406e1b..0e24255 100644
--- a/colorspace_conversion_effect.cpp
+++ b/colorspace_conversion_effect.cpp
@@ -65,8 +65,8 @@ Matrix3d get_xyz_matrix(Colorspace space)
 	//
 	// Some algebraic fiddling yields (unsurprisingly):
 	//
-	//   X_R = (x_R / y_R) Y_R
-	//   Z_R = (z_R / y_R) Y_R
+	//   X_R = (x_R / y_R) Y_R   (so define k1 = x_R / y_R)
+	//   Z_R = (z_R / y_R) Y_R   (so define k4 = z_R / y_R)
 	//
 	// We also know that since RGB=(1,1,1) should give us the
 	// D65 illuminant, we must have
@@ -75,8 +75,8 @@ Matrix3d get_xyz_matrix(Colorspace space)
 	//   Y_R + Y_G + Y_B = D65_Y
 	//   Z_R + Z_G + Z_B = D65_Z
 	//
-	// But since we already know how to express Y and Z by
-	// some constant multiple of X, this reduces to
+	// But since we already know how to express X and Z by
+	// some constant multiple of Y, this reduces to
 	//
 	//   k1 Y_R + k2 Y_G + k3 Y_B = D65_X
 	//      Y_R +    Y_G +    Y_B = D65_Y