Revision: 56326
http://sourceforge.net/p/brlcad/code/56326
Author: mohitdaga
Date: 2013-07-30 14:37:57 +0000 (Tue, 30 Jul 2013)
Log Message:
-----------
Adding new file libicv/filter.c. This will contain filter utilities. Adding
icv_get_kerenl(..) function. This willcontain library of different kernels.
Modified Paths:
--------------
brlcad/trunk/include/icv.h
brlcad/trunk/src/libicv/CMakeLists.txt
Added Paths:
-----------
brlcad/trunk/src/libicv/filter.c
Modified: brlcad/trunk/include/icv.h
===================================================================
--- brlcad/trunk/include/icv.h 2013-07-30 13:56:58 UTC (rev 56325)
+++ brlcad/trunk/include/icv.h 2013-07-30 14:37:57 UTC (rev 56326)
@@ -336,7 +336,30 @@
unsigned int ynum,
unsigned int xnum);
+/** @file libicv/filter.c
+ *
+ * This file contains routines for image filtering. This is done
+ * mainly using the convolution of images. Both Gray Scale and RGB
+ * images are taken care.
+ *
+ */
+typedef enum {
+ ICV_FILTER_LOW_PASS,
+ ICV_FILTER_LAPLACIAN,
+ ICV_FILTER_HORIZONTAL_GRAD,
+ ICV_FILTER_VERTICAL_GRAD,
+ ICV_FILTER_HIGH_PASS,
+ ICV_FILTER_NULL,
+ ICV_FILTER_BOXCAR_AVERAGE,
+ ICV_FILTER_3_LOW_PASS,
+ ICV_FILTER_3_HIGH_PASS,
+ ICV_FILTER_3_BOXCAR_AVERAGE,
+ ICV_FILTER_3_ANIMATION_SMEAR,
+ ICV_FILTER_3_NULL
+}ICV_FILTER;
+
+
/** @} */
/* end image utilities */
Modified: brlcad/trunk/src/libicv/CMakeLists.txt
===================================================================
--- brlcad/trunk/src/libicv/CMakeLists.txt 2013-07-30 13:56:58 UTC (rev
56325)
+++ brlcad/trunk/src/libicv/CMakeLists.txt 2013-07-30 14:37:57 UTC (rev
56326)
@@ -12,6 +12,7 @@
rot.c
color_space.c
crop.c
+ filter.c
)
BRLCAD_ADDLIB(libicv "${LIBICV_SOURCES}" "libbu;libbn;${PNG_LIBRARY}")
Added: brlcad/trunk/src/libicv/filter.c
===================================================================
--- brlcad/trunk/src/libicv/filter.c (rev 0)
+++ brlcad/trunk/src/libicv/filter.c 2013-07-30 14:37:57 UTC (rev 56326)
@@ -0,0 +1,82 @@
+/* F I L T E R . 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 libicv/filter.c
+ *
+ * This file contains routines for image filtering. This is done
+ * mainly using the convolution of images. Both Gray Scale and RGB
+ * images are taken care.
+ */
+
+#include "icv.h"
+
+#define KERN_DEFAULT 3
+
+HIDDEN void
+icv_get_kernel(ICV_FILTER filter_type, double *kern, double *offset) {
+ switch(filter_type) {
+ case ICV_FILTER_LOW_PASS :
+ kern[0] = 3.0/42.0; kern[1] = 5.0/42.0; kern[2] = 3.0/42.0;
+ kern[3] = 5.0/42.0; kern[4] = 10.0/42.0; kern[5] = 5.0/42.0;
+ kern[6] = 3.0/42.0; kern[7] = 5.0/42.0; kern[8] = 3.0/42.0;
+ *offset = 0;
+ break;
+ case ICV_FILTER_LAPLACIAN :
+ kern[0] = -1.0/16.0; kern[1] = -1.0/16.0; kern[2] = -1.0/16.0;
+ kern[3] = -1.0/16.0; kern[4] = 8.0/16.0; kern[5] = -1.0/16.0;
+ kern[6] = -1.0/16.0; kern[7] = -1.0/16.0; kern[8] = -1.0/16.0;
+ *offset = 0.5;
+ break;
+ case ICV_FILTER_HORIZONTAL_GRAD :
+ kern[0] = 1.0/6.0; kern[1] = 0; kern[2] = -1.0/6.0;
+ kern[3] = 1.0/6.0; kern[4] = 0; kern[5] = -1.0/6.0;
+ kern[6] = 1.0/6.0; kern[7] = 0; kern[8] = -1.0/6.0;
+ *offset = 0.5;
+ break;
+ case ICV_FILTER_VERTICAL_GRAD :
+ kern[0] = 1.0/6.0; kern[1] = 1.0/6.0; kern[2] = 1.0/6.0;
+ kern[3] = 0; kern[4] = 0; kern[5] = 0;
+ kern[6] = -1.0/6.0; kern[7] = -1.0/6.0; kern[8] = -1.0/6.0;
+ *offset = 0.5;
+ break;
+ case ICV_FILTER_HIGH_PASS :
+ kern[0] = -1.0; kern[1] = -2.0; kern[2] = -1.0;
+ kern[3] = -2.0; kern[4] = 13.0; kern[5] = -2.0;
+ kern[6] = -1.0; kern[7] = -2.0; kern[8] = -1.0;
+ *offset = 0;
+ break;
+ case ICV_FILTER_BOXCAR_AVERAGE :
+ kern[0] = 1.0/9; kern[1] = 1.0/9; kern[2] = 1.0/9;
+ kern[3] = 1.0/9; kern[4] = 1.0/9; kern[5] = 1.0/9;
+ kern[6] = 1.0/9; kern[7] = 1.0/9; kern[8] = 1.0/9;
+ *offset = 0;
+ break;
+ case ICV_FILTER_NULL :
+ kern[0] = 0; kern[1] = 0; kern[2] = 0;
+ kern[3] = 0; kern[4] = 0; kern[5] = 0;
+ kern[6] = 0; kern[7] = 0; kern[8] = 0;
+ *offset = 0;
+ break;
+ default :
+ bu_log("Filter Type not Implemented.\n");
+ bu_free(kern, "Freeing Kernel, Wrong filter");
+ kern = NULL;
+ }
+ return;
+}
Property changes on: brlcad/trunk/src/libicv/filter.c
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
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Added: svn:eol-style
## -0,0 +1 ##
+native
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