fix show annoattion

public/self/js/Director/detection.js

@@ -276,11 +276,11 @@ function getShowShape(recttype){
 
 function showPopup(topx,lefty,rectIndex,recttype) {
 
-  if (topx > canvas.height){
-    topx = canvas.height;
+  if (topx > canvas.height/2){
+    topx = canvas.height/2;
   }
-  if (lefty > canvas.width){
-    lefty = canvas.width;
+  if (lefty > canvas.width/2){
+    lefty = canvas.width/2;
   }
   _via_display_area_content_name = VIA_DISPLAY_AREA_CONTENT_NAME.IMAGE;