Made vision work and tuned the delay.

Change-Id: I798ecb56307d5c692425357a91fa4c86a7257bf7
diff --git a/y2017/vision/target_finder.cc b/y2017/vision/target_finder.cc
index 22943ef..608ae75 100644
--- a/y2017/vision/target_finder.cc
+++ b/y2017/vision/target_finder.cc
@@ -157,7 +157,7 @@
   // Write down the two indicies.
   std::pair<int, int> selected;
   // We are regressing the combined estimated center,  might write that down.
-  double regressed_y_center;
+  double regressed_y_center = 0;
 
   Eigen::VectorXf b = Eigen::VectorXf::Zero(4);
   for (size_t i = 0; i < component_list.size(); i++) {
@@ -274,7 +274,7 @@
   double pl = std::sqrt(pz * pz + px * px);
 
   *dist = kInchesToMeters * (world_height * pl / py - added_dist);
-  *angle = std::atan2(px, pz);
+  *angle = -std::atan2(px, pz);
 }
 
 }  // namespace vision