Undistort april detection corners

To have more accurate pose estimates (especially when the
april tag is in the corners of the image), we need to account for
distortion. Undistorting just the detected corners is the most efficient
way to do this.

Signed-off-by: milind-u <milind.upadhyay@gmail.com>
Change-Id: Ic3872dee1e6fef060b49260e6abc22498f76a353
diff --git a/y2023/vision/BUILD b/y2023/vision/BUILD
index 5c98d7c..2cc4367 100644
--- a/y2023/vision/BUILD
+++ b/y2023/vision/BUILD
@@ -66,6 +66,7 @@
     srcs = ["vision_util.cc"],
     hdrs = ["vision_util.h"],
     deps = [
+        "//third_party:opencv",
         "//y2023/constants:constants_fbs",
         "@com_github_google_glog//:glog",
     ],