diff --git a/Makefile b/Makefile
index 8cd5993..e784a36 100644
--- a/Makefile
+++ b/Makefile
@@ -42,8 +42,6 @@ ALG_FILES = \
 		$(shell find -L \
 			alg/qrtool \
 			alg/wechat_qrcode \
-			alg/roi_lib.py \
-			alg/roi-verify.py \
 			alg/models/ \
 			) \
 	)
@@ -84,11 +82,6 @@ deploy-api-prod:
 	kubectl --kubeconfig deploy/kubeconfig.themblem set image deploy api emblem=$(IMAGE)
 	kubectl --kubeconfig deploy/kubeconfig.themblem rollout status --timeout=1h deploy api
 
-deploy-roi-worker:
-	curl -X POST https://euphon-alert-23358.famzheng.workers.dev/ -d 'Deploying ROI Worker to emblem-s1: $(IMAGE)'
-	kubectl --kubeconfig deploy/kubeconfig.emblem-s1 set image deploy roi-worker alg=$(IMAGE)
-	kubectl --kubeconfig deploy/kubeconfig.emblem-s1 rollout status --timeout=1h deploy roi-worker
-
 test: FORCE
 	cd api; ./manage.py migrate && ./manage.py test tests
 
diff --git a/alg/qrtool.cpp b/alg/qrtool.cpp
index f1bdd35..c5f2cc3 100644
--- a/alg/qrtool.cpp
+++ b/alg/qrtool.cpp
@@ -86,19 +86,6 @@ int dot_cmd(char **argv, int argc)
 }
 
 
-static void get_bin(Mat &orig, Mat &out)
-{
-    Mat gray;
-    Mat filtered;
-    Point start;
-    Rect roi_rect;
-    cvtColor(orig, gray, COLOR_BGR2GRAY);
-    convertScaleAbs(gray, gray, 2);
-    // bilateralFilter(gray, filtered, 9, 150, 150, BORDER_DEFAULT);
-    medianBlur(gray, gray, 9);
-    threshold(gray, out, 128, 255, THRESH_BINARY);
-}
-
 static
 void usage(const char *name, vector<string> &cmds)
 {