[Toon-members] tag/src five_point.cpp

[Edward Rosten]

CVSROOT:        /cvsroot/toon
Module name:    tag
Changes by:     Edward Rosten <edrosten>        09/04/23 09:49:28

Modified files:
        src            : five_point.cpp 

Log message:
        Doc fix.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/tag/src/five_point.cpp?cvsroot=toon&r1=1.6&r2=1.7

Patches:
Index: five_point.cpp
===================================================================
RCS file: /cvsroot/toon/tag/src/five_point.cpp,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -b -r1.6 -r1.7
--- five_point.cpp      23 Apr 2009 09:22:49 -0000      1.6
+++ five_point.cpp      23 Apr 2009 09:49:28 -0000      1.7
@@ -210,10 +210,10 @@
        Vector<5> b_23 = makeVector(R[6][19], R[6][18], R[6][17], R[6][16], 0) 
- makeVector(0, R[7][19], R[7][18], R[7][17], R[7][16]);
        Vector<5> b_33 = makeVector(R[8][19], R[8][18], R[8][17], R[8][16], 0) 
- makeVector(0, R[9][19], R[9][18], R[9][17], R[9][16]);
 
-       //Compute the Determinant of B using expansion by minors
-       //Not quite Eqn 24--28. Nister uses col/row not row/col
+       //Compute the Determinant of B using expansion along the bottom row.
+       //Eqn 24--28. 
        //
-       // Det = b13 (b21 b32 -b31 b22) - b23 ( b11 b32 - b31 b12) + b33 ( b11 
b22 - b21 b12)
+       // Det = b31 (b12 b23 -b13 b22) - b32 ( b11 b23 - b13 b21) + b33 ( b11 
b22 - b12 b21)
        //     = b13  * p1 - b23  * p2 + b33 * p3
        Vector<8> p1 = poly_mul(b_12, b_23) - poly_mul(b_13, b_22);
        Vector<8> p2 = poly_mul(b_13, b_21) - poly_mul(b_11, b_23);