--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Meerwald-dir/dwt.h	Fri Dec 20 13:08:59 2024 +0100
@@ -0,0 +1,24 @@
+#ifndef DWT_H
+#define DWT_H
+
+#include "wm.h"
+#include "netpbm/pgm.h"
+#include "wavelet.h"
+
+#define FILTERG 1
+#define FILTERH 2
+#define FILTERGi 3
+#define FILTERHi 4
+
+void init_dwt(int cols, int rows, const char *filter_name, int filter, int level, int method);
+Image_tree fdwt(gray **input);
+Image_tree fdwt_wp(gray **input);
+void idwt(Image_tree dwts, gray **output);
+void idwt_wp(Image_tree dwts, gray **output);
+int gen_pollen_filter(double *filter, double alpha, double beta, int which);
+void dwt_pollen_filter(double alpha, double beta);
+int gen_param_filter(double *filter, int n, double alpha[], int which);
+void dwt_param_filter(double alpha[], int param_len[]);
+void done_dwt();
+
+#endif