Added reference to thresholding resource

git-svn-id: http://zxing.googlecode.com/svn/trunk@45 59b500cc-1b3d-0410-9834-0bbf25fbcc57

diff --git a/core/src/com/google/zxing/common/BlackPointEstimator.java b/core/src/com/google/zxing/common/BlackPointEstimator.java
index ee3b96c..2203fd3 100644 (file)
--- a/core/src/com/google/zxing/common/BlackPointEstimator.java
+++ b/core/src/com/google/zxing/common/BlackPointEstimator.java
@@ -20,7 +20,9 @@ package com.google.zxing.common;
  * <p>Encapsulates logic that estimates the optimal "black point", the luminance value\r
  * which is the best line between "white" and "black" in a grayscale image.</p>\r
  *\r
- * <p>TODO: Include reference to paper with similar ideas</p>\r
+ * <p>For an interesting discussion of this issue, see\r
+ * <a href="http://webdiis.unizar.es/~neira/12082/thresholding.pdf">http://webdiis.unizar.es/~neira/12082/thresholding.pdf</a>.\r
+ * </p>\r
  *\r
  * @author srowen@google.com (Sean Owen)\r
  */\r