--- magic/Magdir/images
+++ magic/Magdir/images	2010-11-24 12:11:01.520426341 +0000
@@ -551,11 +551,18 @@
 # Bio-Rad .PIC is an image format used by microscope control systems
 # and related image processing software used by biologists.
 # From: Vebjorn Ljosa <vebjorn@ljosa.com>
-54	leshort 12345		Bio-Rad .PIC Image File
->0	leshort >0		%hd x
->2	leshort >0		%hd,
->4	leshort =1		1 image in file
->4	leshort >1		%hd images in file
+# BOOL values are two-byte integers; use them to rule out false positives.
+# http://web.archive.org/web/20050317223257/www.cs.ubc.ca/spider/ladic/text/biorad.txt
+# Samples: http://www.loci.wisc.edu/software/sample-data
+14	leshort	<2
+>4	leshort >0
+>49	byte 0
+>62	leshort <2
+>>54	leshort 12345		Bio-Rad .PIC Image File
+>>>0	leshort >0		%hd x
+>>>2	leshort >0		%hd,
+>>>4	leshort =1		1 image in file
+>>>4	leshort >1		%hd images in file
 
 # From Jan "Yenya" Kasprzak <kas@fi.muni.cz>
 # The description of *.mrw format can be found at