Add a README for the 971CV/ vision target recognizer directory.

git-svn-id: https://robotics.mvla.net/svn/frc971/2013/trunk/src@4132 f308d9b7-e957-4cde-b6ac-9a88185e7312
diff --git a/971CV/README.txt b/971CV/README.txt
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+This is a working computer vision target recognizer for the FRC 2013 game.

+

+Run it on 2013-test-images/*.jpg.

+

+TODO: Capture 640x480 images with the robot's camera (Logitech C210), green LED

+      light ring, and the shutter speed turned down as in 2012.

+      Also turn off auto whitebalance.

+

+    src/org/frc971/DebugCanvas.java     -- displays intermediate frames for tuning

+    src/org/frc971/Recognizer.java      -- the vision recognizer interface

+    src/org/frc971/Recognizer2013.java  -- the UI independent vision recognizer

+    src/org/frc971/VisionTuner.java     -- a Java UI for testing and tuning the recognizer

+

+TODO: Connect the recognizer to the robot camera (e.g. using ffmpeg).

+TODO: Get the relevant robot measurements: Camera height, setback, pitch,

+      horizontal FOV, and vertical FOV.

+TODO: Compute target distance, elevation, and azimuth, and send them to the

+      robot's control loops.

+TODO: Pass through a timestamp with each frame.

+TODO: Wean off of WPIJavaCV and its DaisyExtensions.