diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 012fd53d..10f2a94a 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -123,3 +123,6 @@
 
 - Luis Pedro Coelho
   imread plugin
+
+- Anders Boesen Lindbo Larsen
+  Dense DAISY feature description, circle perimeter drawing.