[brlcad-commits] SF.net SVN: brlcad:[56853] brlcad/trunk/src/libicv

[<moh...@us...>]

Revision: 56853
          http://sourceforge.net/p/brlcad/code/56853
Author:   mohitdaga
Date:     2013-08-15 10:33:19 +0000 (Thu, 15 Aug 2013)
Log Message:
-----------
Add dpix.c in libicv. This file will contain routines to read and write images in dpix format. Also added normalize function which will be used to normalize the value in image

Modified Paths:
--------------
    brlcad/trunk/src/libicv/CMakeLists.txt

Added Paths:
-----------
    brlcad/trunk/src/libicv/dpix.c

Modified: brlcad/trunk/src/libicv/CMakeLists.txt
===================================================================
--- brlcad/trunk/src/libicv/CMakeLists.txt	2013-08-15 10:27:42 UTC (rev 56852)
+++ brlcad/trunk/src/libicv/CMakeLists.txt	2013-08-15 10:33:19 UTC (rev 56853)
@@ -19,6 +19,7 @@
   decimate.c
   pix.c
   bw.c
+  dpix.c
   )
 
 BRLCAD_ADDLIB(libicv "${LIBICV_SOURCES}" "libbu;libbn;${PNG_LIBRARY}")

Added: brlcad/trunk/src/libicv/dpix.c
===================================================================
--- brlcad/trunk/src/libicv/dpix.c	                        (rev 0)
+++ brlcad/trunk/src/libicv/dpix.c	2013-08-15 10:33:19 UTC (rev 56853)
@@ -0,0 +1,87 @@
+/*                          D P I X . C
+ * BRL-CAD
+ *
+ * Copyright (c) 2013 United States Government as represented by
+ * the U.S. Army Research Laboratory.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this file; see the file named COPYING for more
+ * information.
+ */
+/** @file dpix.c
+ *
+ * this contains read/write routines for dpix format.
+ *
+ */
+
+#include "common.h"
+
+#include <sys/stat.h>  /* for file mode infor in WRMODE */
+#include <fcntl.h>
+
+#include "bio.h"
+#include "bu.h"
+#include "icv.h"
+#include "vmath.h"
+
+#define WRMODE S_IRUSR|S_IRGRP|S_IROTH
+
+/* 
+ * This function normalizes the data array of the input image.
+ */
+HIDDEN icv_image_t *
+icv_normalize(icv_image_t *bif)
+{	
+    double *data;
+    double max, min;
+    double m, b;
+    size_t size;
+    unsigned long int i;
+
+    if (bif == NULL) {
+    	bu_log("icv_normalize : trying to normalize a NULL bif\n");
+    	return bif;
+    }
+
+    data = bif->data;
+    size = bif->height*bif->width*bif->channels;
+
+    min = INFINITY;
+    max = -INFINITY;
+
+    for (i = 0; i<size; i++) {
+        V_MIN(min, *data);
+        V_MAX(max, *data);
+        data++;
+    }
+
+    data = bif->data;
+    m = 1/(max-min);
+    b = -min/(max-min);
+
+    for (i =0; i<size; i++) {
+        *data = m*(*data) + b;
+        data++;
+    }
+
+    return bif;
+}
+
+/*
+ * Local Variables:
+ * tab-width: 8
+ * mode: C
+ * indent-tabs-mode: t
+ * c-file-style: "stroustrup"
+ * End:
+ * ex: shiftwidth=4 tabstop=8
+ */


Property changes on: brlcad/trunk/src/libicv/dpix.c
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Added: svn:eol-style
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