diff --git a/ti/static/ti/cv.js b/ti/static/ti/cv.js
index 04710f14fbc82f2973f333aea654928ac045199c..35b9cacc476700b164c931b718e3b16a7147516f 100644
--- a/ti/static/ti/cv.js
+++ b/ti/static/ti/cv.js
@@ -32,6 +32,10 @@
   }
 
   function listener(event){
+
+    ctx.fillStyle = 'red'; // 채우기 색 지정
+    ctx.globalAlpha = "1.0"; // 채우기 투명도 설정
+    ctx.fillRect(0,0,500,500);
       switch(event.type){
           case "mousedown":
               initDraw(event);