switch image_writer to glog

Change-Id: I286751f0f5090d2b7361eb833ea62f25b510d542
diff --git a/y2019/vision/target_geometry.cc b/y2019/vision/target_geometry.cc
index efa2def..de76acb 100644
--- a/y2019/vision/target_geometry.cc
+++ b/y2019/vision/target_geometry.cc
@@ -84,7 +84,7 @@
     ::Eigen::Matrix<T, 2, 1> pt =
         Project<T>(ToEigenMatrix<T>(template_pt), intrinsics, extrinsics);
     residual[0] = result.x() - pt(0, 0);
-    residual[1] = result.y() - pt(0, 1);
+    residual[1] = result.y() - pt(1, 0);
     return true;
   }