Revision: 56390
http://sourceforge.net/p/brlcad/code/56390
Author: mohitdaga
Date: 2013-07-31 18:47:39 +0000 (Wed, 31 Jul 2013)
Log Message:
-----------
Sanitize the conversion from double to unsigned char. Instead of floor which
can introduce a error upto a difference of 2 intensities, adapt a more robust
conversion where it rounds off to nearest integer.
Modified Paths:
--------------
brlcad/trunk/src/libicv/fileformat.c
Modified: brlcad/trunk/src/libicv/fileformat.c
===================================================================
--- brlcad/trunk/src/libicv/fileformat.c 2013-07-31 18:43:54 UTC (rev
56389)
+++ brlcad/trunk/src/libicv/fileformat.c 2013-07-31 18:47:39 UTC (rev
56390)
@@ -164,7 +164,7 @@
if (ZERO(bif->gamma_corr)) {
for (i=0; i<size; i++) {
- *char_p = (unsigned char)floor((*double_p)*255.0);
+ *char_p = (unsigned char)((*double_p)*255.0 +0.5) ;
char_p++;
double_p++;
}
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