diff --git a/src/image_analyzer.py b/src/image_analyzer.py
--- a/src/image_analyzer.py
+++ b/src/image_analyzer.py
@@ -24,8 +24,8 @@ class ImageAnalyzer:
   def analyzePoint(self,image,imageCoords,stoneWidth,stoneHeight,tresB,tresW):
     b=w=e=0
     
-    cmax=max(int(stoneWidth*2//5),2)
-    rmax=max(int(stoneHeight*2//5),2)
+    cmax=max(int(stoneWidth*2//7),2) # !! optimal parameters subject to further research
+    rmax=max(int(stoneHeight*2//7),2)
     
     for r in range(-rmax,rmax+1):
       for c in range(-cmax,cmax+1):