libvips/include/vips/fmask.h

87 lines
3.3 KiB
C
Raw Normal View History

2007-08-29 18:23:50 +02:00
/* @(#) Typical filter function
* va_list is filter parameters
* lowpass highpass filters
* flag = 0 -> idealhpf, parameters: frequency cutoff
* flag = 1 -> ideallpf, parameters: frequency cutoff
* flag = 2 -> buthpf, parameters: order, frequency cutoff, amplitude cutoff
* flag = 3 -> butlpf, parameters: order, frequency cutoff, amplitude cutoff
* flag = 4 -> gaussianlpf, parameters: frequency cutoff, amplitude cutoff
* flag = 5 -> gaussianhpf, parameters: frequency cutoff, amplitude cutoff
* ring pass ring reject filters
* flag = 6 -> idealrpf, parameters: frequency cutoff, width
* flag = 7 -> idealrrf, parameters: frequency cutoff, width
* flag = 8 -> butrpf, parameters: order, freq cutoff, width, ampl cutoff
* flag = 9 -> butrrf, parameters: order, freq cutoff, width, ampl cutoff
* flag = 10 -> gaussianrpf, parameters: frequency cutoff, width, ampl cutoff
* flag = 11 -> gaussianrrf, parameters: frequency cutoff, width, ampl cutoff
* bandpass bandreject filters
* flag = 12 -> idealbpf, parameters: center frequency, 2*radius
* flag = 13 -> idealbrf, parameters: centre frequency, 2*radius
* flag = 14 -> butbpf, parameters: order, frequency, 2*radius, ampl cutoff
* flag = 15 -> butbrf, parameters: order, frequency, 2*radius, ampl cutoff
* flag = 16 -> gaussianbpf, parameters: frequency cutoff, width, ampl cutoff
* flag = 17 -> gaussianbrf, parameters: frequency cutoff, width, ampl cutoff
* fractal filters (for filtering gaussian noises only)
* flag = 18 -> fractal, parameters: fractal dimension
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef IM_FMASK_H
#define IM_FMASK_H
typedef enum mask_type {
MASK_IDEAL_HIGHPASS = 0,
MASK_IDEAL_LOWPASS = 1,
MASK_BUTTERWORTH_HIGHPASS = 2,
MASK_BUTTERWORTH_LOWPASS = 3,
MASK_GAUSS_HIGHPASS = 4,
MASK_GAUSS_LOWPASS = 5,
MASK_IDEAL_RINGPASS = 6,
MASK_IDEAL_RINGREJECT = 7,
MASK_BUTTERWORTH_RINGPASS = 8,
MASK_BUTTERWORTH_RINGREJECT = 9,
MASK_GAUSS_RINGPASS = 10,
MASK_GAUSS_RINGREJECT = 11,
MASK_IDEAL_BANDPASS = 12,
MASK_IDEAL_BANDREJECT = 13,
MASK_BUTTERWORTH_BANDPASS = 14,
MASK_BUTTERWORTH_BANDREJECT = 15,
MASK_GAUSS_BANDPASS = 16,
MASK_GAUSS_BANDREJECT = 17,
MASK_FRACTAL_FLT = 18
} MaskType;
int im_flt_image_freq( IMAGE *in, IMAGE *out, MaskType flag, ... );
int im_create_fmask( IMAGE *out, int xsize, int ysize, MaskType flag, ... );
int im__fmaskcir( IMAGE *out, MaskType flag, va_list ap );
#endif /*IM_FMASK_H*/