/*
 *  @(#) $Id: filters.h,v 1.13 2006/07/24 22:26:33 yeti-dn Exp $
 *  Copyright (C) 2003 David Necas (Yeti), Petr Klapetek.
 *  E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
 */

#ifndef __GWY_PROCESS_FILTERS_H__
#define __GWY_PROCESS_FILTERS_H__

#include <libprocess/datafield.h>

G_BEGIN_DECLS

void gwy_data_field_normalize                  (GwyDataField *data_field);
void gwy_data_field_renormalize                (GwyDataField *data_field,
                                                gdouble range,
                                                gdouble offset);
gint     gwy_data_field_threshold          (GwyDataField *data_field,
                                            gdouble threshval,
                                            gdouble bottom,
                                            gdouble top);
gint     gwy_data_field_area_threshold     (GwyDataField *data_field,
                                            gint col,
                                            gint row,
                                            gint width,
                                            gint height,
                                            gdouble threshval,
                                            gdouble bottom,
                                            gdouble top);
gint     gwy_data_field_clamp              (GwyDataField *data_field,
                                            gdouble bottom,
                                            gdouble top);
gint     gwy_data_field_area_clamp         (GwyDataField *data_field,
                                            gint col,
                                            gint row,
                                            gint width,
                                            gint height,
                                            gdouble bottom,
                                            gdouble top);
void     gwy_data_field_area_gather        (GwyDataField *data_field,
                                            GwyDataField *result,
                                            GwyDataField *buffer,
                                            gint hsize,
                                            gint vsize,
                                            gboolean average,
                                            gint col,
                                            gint row,
                                            gint width,
                                            gint height);
void gwy_data_field_convolve                   (GwyDataField *data_field,
                                                GwyDataField *kernel_field);
void gwy_data_field_area_convolve              (GwyDataField *data_field,
                                                GwyDataField *kernel_field,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_median              (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_median         (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_mean                (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_mean           (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_conservative        (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_conservative   (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_laplacian           (GwyDataField *data_field);
void gwy_data_field_area_filter_laplacian      (GwyDataField *data_field,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_sobel               (GwyDataField *data_field,
                                                GwyOrientation orientation);
void gwy_data_field_area_filter_sobel          (GwyDataField *data_field,
                                                GwyOrientation orientation,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_prewitt             (GwyDataField *data_field,
                                                GwyOrientation orientation);
void gwy_data_field_area_filter_prewitt        (GwyDataField *data_field,
                                                GwyOrientation orientation,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_minimum             (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_minimum        (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_maximum             (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_maximum        (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_rms                 (GwyDataField *data_field,
                                                gint size);
void gwy_data_field_area_filter_rms            (GwyDataField *data_field,
                                                gint size,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);
void gwy_data_field_filter_kuwahara            (GwyDataField *data_field);
void gwy_data_field_area_filter_kuwahara       (GwyDataField *data_field,
                                                gint col,
                                                gint row,
                                                gint width,
                                                gint height);

void gwy_data_field_filter_canny               (GwyDataField *data_field,
                                                gdouble threshold);
void gwy_data_field_shade                      (GwyDataField *data_field,
                                                GwyDataField *target_field,
                                                gdouble theta,
                                                gdouble phi);

void gwy_data_field_filter_harris(GwyDataField *x_gradient,
                                  GwyDataField *y_gradient,
                                  GwyDataField *result,
                                  gint neighbourhood,
                                  gdouble alpha);


G_END_DECLS

#endif /* __GWY_PROCESS_FILTERS__ */
