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diff --git a/intern/libmv/libmv/multiview/projection_test.cc b/intern/libmv/libmv/multiview/projection_test.cc
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+// Copyright (c) 2007, 2008 libmv authors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#include <iostream>
+
+#include "libmv/multiview/projection.h"
+#include "libmv/numeric/numeric.h"
+#include "testing/testing.h"
+
+namespace {
+using namespace libmv;
+
+TEST(Projection, P_From_KRt) {
+  Mat3 K, Kp;
+  K << 10,  1, 30,
+        0, 20, 40,
+        0,  0,  1;
+
+  Mat3 R, Rp;
+  R << 1, 0, 0,
+       0, 1, 0,
+       0, 0, 1;
+
+  Vec3 t, tp;
+  t << 1, 2, 3;
+
+  Mat34 P;
+  P_From_KRt(K, R, t, &P);
+  KRt_From_P(P, &Kp, &Rp, &tp);
+
+  EXPECT_MATRIX_NEAR(K, Kp, 1e-8);
+  EXPECT_MATRIX_NEAR(R, Rp, 1e-8);
+  EXPECT_MATRIX_NEAR(t, tp, 1e-8);
+
+  // TODO(keir): Change the code to ensure det(R) == 1, which is not currently
+  // the case. Also add a test for that here.
+}
+
+Vec4 GetRandomPoint() {
+  Vec4 X;
+  X.setRandom();
+  X(3) = 1;
+  return X;
+}
+
+TEST(Projection, isInFrontOfCamera) {
+  Mat34 P;
+  P << 1, 0, 0, 0,
+       0, 1, 0, 0,
+       0, 0, 1, 0;
+
+  Vec4 X_front = GetRandomPoint();
+  Vec4 X_back = GetRandomPoint();
+  X_front(2) = 10;  // Any point in the positive Z direction
+                    // where Z > 1 is infront of the camera.
+  X_back(2) = -10;  // Any point int he negative Z dirstaion
+                    // is behind the camera.
+
+  bool res_front = isInFrontOfCamera(P, X_front);
+  bool res_back = isInFrontOfCamera(P, X_back);
+
+  EXPECT_TRUE(res_front);
+  EXPECT_FALSE(res_back);
+}
+
+TEST(AutoCalibration, ProjectionShiftPrincipalPoint) {
+  Mat34 P1, P2;
+  P1 << 1, 0, 0, 0,
+        0, 1, 0, 0,
+        0, 0, 1, 0;
+  P2 << 1, 0, 3, 0,
+        0, 1, 4, 0,
+        0, 0, 1, 0;
+  Mat34 P1_computed, P2_computed;
+  ProjectionShiftPrincipalPoint(P1, Vec2(0, 0), Vec2(3, 4), &P2_computed);
+  ProjectionShiftPrincipalPoint(P2, Vec2(3, 4), Vec2(0, 0), &P1_computed);
+
+  EXPECT_MATRIX_EQ(P1, P1_computed);
+  EXPECT_MATRIX_EQ(P2, P2_computed);
+}
+
+TEST(AutoCalibration, ProjectionChangeAspectRatio) {
+  Mat34 P1, P2;
+  P1 << 1, 0, 3, 0,
+        0, 1, 4, 0,
+        0, 0, 1, 0;
+  P2 << 1, 0, 3, 0,
+        0, 2, 4, 0,
+        0, 0, 1, 0;
+  Mat34 P1_computed, P2_computed;
+  ProjectionChangeAspectRatio(P1, Vec2(3, 4), 1, 2, &P2_computed);
+  ProjectionChangeAspectRatio(P2, Vec2(3, 4), 2, 1, &P1_computed);
+
+  EXPECT_MATRIX_EQ(P1, P1_computed);
+  EXPECT_MATRIX_EQ(P2, P2_computed);
+}
+
+}  // namespace