Revision: 56429
http://sourceforge.net/p/brlcad/code/56429
Author: mohitdaga
Date: 2013-08-01 18:41:42 +0000 (Thu, 01 Aug 2013)
Log Message:
-----------
Add routines which performs operations with contant.
Modified Paths:
--------------
brlcad/trunk/include/icv.h
brlcad/trunk/src/libicv/operations.c
Modified: brlcad/trunk/include/icv.h
===================================================================
--- brlcad/trunk/include/icv.h 2013-08-01 18:40:22 UTC (rev 56428)
+++ brlcad/trunk/include/icv.h 2013-08-01 18:41:42 UTC (rev 56429)
@@ -372,6 +372,28 @@
*/
void icv_add_val(icv_image_t* img, double val);
+/**
+ * This multiplies a double value to all the pixels of the image.
+ * Also if the flag ICV_OPERATIONS_MODE is set this doesnt santizes
+ * the image.
+ */
+void icv_multiply_val(icv_image_t* img, double val);
+
+/**
+ * This divides a double value to all the pixels of the image.
+ * Also if the flag ICV_OPERATIONS_MODE is set this doesnt santizes
+ * the image.
+ */
+void icv_divide_val(icv_image_t* img, double val);
+
+/**
+ * This raises all the pixels of the image to an exponential power.
+ * Also if the flag ICV_OPERATIONS_MODE is set this doesnt santizes
+ * the image.
+ */
+void icv_pow_val(icv_image_t* img, double val);
+
+
typedef enum {
ICV_FILTER_LOW_PASS,
ICV_FILTER_LAPLACIAN,
Modified: brlcad/trunk/src/libicv/operations.c
===================================================================
--- brlcad/trunk/src/libicv/operations.c 2013-08-01 18:40:22 UTC (rev
56428)
+++ brlcad/trunk/src/libicv/operations.c 2013-08-01 18:41:42 UTC (rev
56429)
@@ -65,6 +65,61 @@
icv_sanitize(img);
}
+void icv_multiply_val(icv_image_t* img, double val)
+{
+ double *data = NULL;
+ size_t size;
+
+ data = img->data;
+
+ for (size = img->width*img->height*img->channels; size>0; size--) {
+ *data *= val;
+ data++;
+ }
+ if((img->flags && ICV_OPERATIONS_MODE))
+ img->flags&=(!ICV_SANITIZED);
+ else
+ icv_sanitize(img);
+}
+
+void icv_divide_val(icv_image_t* img, double val)
+{
+ double *data = NULL;
+ size_t size;
+
+ data = img->data;
+
+ /* Since data is double dividing by 0 will result in INF and -INF */
+
+ for (size = img->width*img->height*img->channels; size>0; size--) {
+ *data /= val;
+ data++;
+ }
+
+ if((img->flags && ICV_OPERATIONS_MODE))
+ img->flags&=(!ICV_SANITIZED);
+ else
+ icv_sanitize(img);
+}
+
+void icv_pow_val(icv_image_t* img, double val)
+{
+ double *data = NULL;
+ size_t size;
+
+ data = img->data;
+
+ for (size = img->width*img->height*img->channels; size>0; size--) {
+ *data = pow(*data,val);
+ data++;
+ }
+
+ if((img->flags && ICV_OPERATIONS_MODE))
+ img->flags&=(!ICV_SANITIZED);
+ else
+ icv_sanitize(img);
+}
+
/*
* Local Variables:
* tab-width: 8
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