Adjust exposure for 2018 fisheye camera

Change-Id: If4238386e6ffdc9767d74d0f114d683dcc1a1b59
diff --git a/y2018/vision/exposure_2018.sh b/y2018/vision/exposure_2018.sh
index e021919..c96f5f0 100755
--- a/y2018/vision/exposure_2018.sh
+++ b/y2018/vision/exposure_2018.sh
@@ -3,7 +3,7 @@
 set -e
 
 A=`ls /dev/video*`
-EXPOSURE='2000'
+EXPOSURE='100'
 
 echo $SHELL
 
diff --git a/y2018/vision/image_streamer.cc b/y2018/vision/image_streamer.cc
index f4ad36a..ce6f5e2 100644
--- a/y2018/vision/image_streamer.cc
+++ b/y2018/vision/image_streamer.cc
@@ -221,7 +221,7 @@
 
   TCPServer<MjpegDataSocket> tcp_serv_(80);
   aos::vision::CameraParams params;
-  params.set_exposure(300);
+  params.set_exposure(100);
   params.set_width(320);
   params.set_height(240);
   CameraStream camera(params, "/dev/video0", &tcp_serv_);
diff --git a/y2018/vision/startup.sh b/y2018/vision/startup.sh
index 5251380..6cb211a 100755
--- a/y2018/vision/startup.sh
+++ b/y2018/vision/startup.sh
@@ -38,7 +38,7 @@
 
 v4l2-ctl --set-ctrl="exposure_auto=1" -d $A
 sleep 0.5
-v4l2-ctl --set-ctrl="exposure_absolute=2000" -d $A
+v4l2-ctl --set-ctrl="exposure_absolute=100" -d $A
 sleep 0.5
 
 PATH="./;$PATH"