Merge branch 'marching-squares-bug' into 'master'

Fixing marching squares condition of acceptance above wash_threshold.

See merge request !34

radixalgorithm/marchingsquares.i.hh

@@ -74,6 +74,10 @@ std::vector<std::pair<int, int>> MarchingSquares<data_type>::march(
     {
       mBit[p_i] = 2;
     }
+    else
+    {
+      mBit[p_i] = 0;
+    }
   }
   //
   // connected component labeling is required for multiple groups
@@ -158,7 +162,7 @@ bool MarchingSquares<data_type>::accepts(size_t r, size_t c) const
   if (c < 0 || r < 0 || c >= mColumns || r >= mRows) return false;
 
   // Check the data value
-  if (mData[mColumns * r + c] > 0) return true;
+  if (mBit[mColumns * r + c] == 1) return true;
 
   return false;
 }