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/* base class for all convolution operations
*
* properties:
* - one input image
* - one output image
* - one input mask
*/
/*
Copyright (C) 1991-2005 The National Gallery
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
/*
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include "pconvolution.h"
/**
* SECTION: convolution
* @short_description: convolve and correlate images
* @stability: Stable
* @include: vips/vips.h
*
* These operations convolve an image in some way, or are operations based on
* simple convolution, or are useful with convolution.
*
*/
/**
* VipsPrecision:
* @VIPS_PRECISION_INTEGER: int everywhere
* @VIPS_PRECISION_FLOAT: float everywhere
* @VIPS_PRECISION_APPROXIMATE: approximate integer output
*
* How accurate an operation should be.
*/
/**
* VipsCombine:
* @VIPS_COMBINE_MAX: take the maximum of the possible values
* @VIPS_COMBINE_SUM: sum all the values
* @VIPS_COMBINE_MIN: take the minimum value
*
* How to combine values. See vips_compass(), for example.
*/
G_DEFINE_ABSTRACT_TYPE( VipsConvolution, vips_convolution,
VIPS_TYPE_OPERATION );
static int
vips_convolution_build( VipsObject *object )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsConvolution *convolution = VIPS_CONVOLUTION( object );
VipsImage **t = (VipsImage **) vips_object_local_array( object, 2 );
#ifdef DEBUG
printf( "vips_convolution_build: " );
vips_object_print_name( object );
printf( "\n" );
#endif /*DEBUG*/
if( VIPS_OBJECT_CLASS( vips_convolution_parent_class )->
build( object ) )
return( -1 );
if( vips_check_matrix( class->nickname, convolution->mask, &t[0] ) )
return( -1 );
convolution->M = t[0];
return( 0 );
}
static void
vips_convolution_class_init( VipsConvolutionClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
VipsOperationClass *operation_class = VIPS_OPERATION_CLASS( class );
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "convolution";
vobject_class->description = _( "convolution operations" );
vobject_class->build = vips_convolution_build;
operation_class->flags = VIPS_OPERATION_SEQUENTIAL;
/* Inputs set by subclassess.
*/
VIPS_ARG_IMAGE( class, "in", 0,
_( "Input" ),
_( "Input image argument" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsConvolution, in ) );
VIPS_ARG_IMAGE( class, "out", 10,
_( "Output" ),
_( "Output image" ),
VIPS_ARGUMENT_REQUIRED_OUTPUT,
G_STRUCT_OFFSET( VipsConvolution, out ) );
VIPS_ARG_IMAGE( class, "mask", 20,
_( "Mask" ),
_( "Input matrix image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsConvolution, mask ) );
}
static void
vips_convolution_init( VipsConvolution *convolution )
{
}
/* Called from iofuncs to init all operations in this dir. Use a plugin system
* instead?
*/
void
vips_convolution_operation_init( void )
{
extern GType vips_conv_get_type( void );
extern GType vips_conva_get_type( void );
extern GType vips_convf_get_type( void );
extern GType vips_convi_get_type( void );
extern GType vips_convsep_get_type( void );
extern GType vips_convasep_get_type( void );
extern GType vips_compass_get_type( void );
extern GType vips_fastcor_get_type( void );
extern GType vips_spcor_get_type( void );
extern GType vips_sharpen_get_type( void );
extern GType vips_gaussblur_get_type( void );
extern GType vips_sobel_get_type( void );
extern GType vips_canny_get_type( void );
vips_conv_get_type();
vips_conva_get_type();
vips_convf_get_type();
vips_convi_get_type();
vips_compass_get_type();
vips_convsep_get_type();
vips_convasep_get_type();
vips_fastcor_get_type();
vips_spcor_get_type();
vips_sharpen_get_type();
vips_gaussblur_get_type();
vips_canny_get_type();
vips_sobel_get_type();
}
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