From 33424e7e1dffdf379fc20f58fb9c491b4c76f59a Mon Sep 17 00:00:00 2001
From: Emil Martinec <ejmartin@uchicago.edu>
Date: Tue, 8 May 2012 15:33:21 -0500
Subject: [PATCH] Minor bugfix for AutoExposure

---
 rtengine/improcfun.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 4bdc4e68e..2d93a79b1 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -678,7 +678,7 @@ fclose(f);*/
 			median++;
 			count += histogram[median];
 		}
-		if (median==0) {//probably the image is a blackframe
+		if (median==0 || ave<1) {//probably the image is a blackframe
 			expcomp=0;
 			black=0;
 			bright=0;
@@ -775,7 +775,6 @@ fclose(f);*/
 		shc <<= histcompr;
 		
 		//prevent division by 0
-		if (ave<1) return;
 		if (lodev==0) lodev=1;
 		
 		//compute exposure compensation as geometric mean of the amount that