From fa6e6b4da18d62a9657689bb503d96791eeaefc0 Mon Sep 17 00:00:00 2001
From: Peter Braden <peterbraden@peterbraden.co.uk>
Date: Mon, 19 Nov 2012 11:43:42 -0800
Subject: [PATCH] poitential fix for null pointer error. Test still screwed
 though.

---
 lib/opencv.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/opencv.js b/lib/opencv.js
index fb323e1..ccb94c7 100755
--- a/lib/opencv.js
+++ b/lib/opencv.js
@@ -20,7 +20,15 @@ var matrix = cv.Matrix.prototype;
 matrix.detectObject = function(classifier, opts, cb){
 	opts = opts || {}
 
-	var face_cascade = new cv.CascadeClassifier(classifier);
+  cv._detectObjectClassifiers = cv._detectObjectClassifiers || {}
+
+  if (cv._detectObjectClassifiers[classifier]){
+    var face_cascade = cv._detectObjectClassifiers[classifier];
+  } else{
+	  var face_cascade = new cv.CascadeClassifier(classifier);
+    cv._detectObjectClassifiers[classifier] = face_cascade;
+  }
+
 	face_cascade.detectMultiScale(this, cb, opts.scale, opts.neighbors
 		, opts.min && opts.min[0], opts.min && opts.min[1]);
 }