87 lines
3.3 KiB
C
87 lines
3.3 KiB
C
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/* @(#) Typical filter function
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* va_list is filter parameters
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* lowpass highpass filters
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* flag = 0 -> idealhpf, parameters: frequency cutoff
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* flag = 1 -> ideallpf, parameters: frequency cutoff
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* flag = 2 -> buthpf, parameters: order, frequency cutoff, amplitude cutoff
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* flag = 3 -> butlpf, parameters: order, frequency cutoff, amplitude cutoff
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* flag = 4 -> gaussianlpf, parameters: frequency cutoff, amplitude cutoff
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* flag = 5 -> gaussianhpf, parameters: frequency cutoff, amplitude cutoff
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* ring pass ring reject filters
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* flag = 6 -> idealrpf, parameters: frequency cutoff, width
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* flag = 7 -> idealrrf, parameters: frequency cutoff, width
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* flag = 8 -> butrpf, parameters: order, freq cutoff, width, ampl cutoff
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* flag = 9 -> butrrf, parameters: order, freq cutoff, width, ampl cutoff
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* flag = 10 -> gaussianrpf, parameters: frequency cutoff, width, ampl cutoff
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* flag = 11 -> gaussianrrf, parameters: frequency cutoff, width, ampl cutoff
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* bandpass bandreject filters
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* flag = 12 -> idealbpf, parameters: center frequency, 2*radius
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* flag = 13 -> idealbrf, parameters: centre frequency, 2*radius
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* flag = 14 -> butbpf, parameters: order, frequency, 2*radius, ampl cutoff
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* flag = 15 -> butbrf, parameters: order, frequency, 2*radius, ampl cutoff
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* flag = 16 -> gaussianbpf, parameters: frequency cutoff, width, ampl cutoff
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* flag = 17 -> gaussianbrf, parameters: frequency cutoff, width, ampl cutoff
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* fractal filters (for filtering gaussian noises only)
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* flag = 18 -> fractal, parameters: fractal dimension
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifndef IM_FMASK_H
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#define IM_FMASK_H
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typedef enum mask_type {
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MASK_IDEAL_HIGHPASS = 0,
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MASK_IDEAL_LOWPASS = 1,
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MASK_BUTTERWORTH_HIGHPASS = 2,
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MASK_BUTTERWORTH_LOWPASS = 3,
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MASK_GAUSS_HIGHPASS = 4,
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MASK_GAUSS_LOWPASS = 5,
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MASK_IDEAL_RINGPASS = 6,
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MASK_IDEAL_RINGREJECT = 7,
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MASK_BUTTERWORTH_RINGPASS = 8,
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MASK_BUTTERWORTH_RINGREJECT = 9,
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MASK_GAUSS_RINGPASS = 10,
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MASK_GAUSS_RINGREJECT = 11,
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MASK_IDEAL_BANDPASS = 12,
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MASK_IDEAL_BANDREJECT = 13,
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MASK_BUTTERWORTH_BANDPASS = 14,
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MASK_BUTTERWORTH_BANDREJECT = 15,
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MASK_GAUSS_BANDPASS = 16,
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MASK_GAUSS_BANDREJECT = 17,
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MASK_FRACTAL_FLT = 18
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} MaskType;
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int im_flt_image_freq( IMAGE *in, IMAGE *out, MaskType flag, ... );
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int im_create_fmask( IMAGE *out, int xsize, int ysize, MaskType flag, ... );
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int im__fmaskcir( IMAGE *out, MaskType flag, va_list ap );
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#endif /*IM_FMASK_H*/
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