C++ (Cpp) VImage::linear示例

示例#1

文件： VImage.cpp 项目： One-com/sharp

VImage 
VImage::new_from_image( std::vector<double> pixel )
{
	VImage onepx = VImage::black( 1, 1, 
		VImage::option()->set( "bands", bands() ) ); 

	onepx = onepx.linear( to_vectorv( 1, 1.0 ), pixel ).cast( format() );

	VImage big = onepx.embed( 0, 0, width(), height(), 
		VImage::option()->set( "extend", VIPS_EXTEND_COPY ) ); 

	big = big.copy( 
		VImage::option()->
			set( "interpretation", interpretation() )->
			set( "xres", xres() )->
			set( "yres", yres() )->
			set( "xoffset", xres() )->
			set( "yoffset", yres() ) ); 

	return( big ); 
}

示例#2

VImage 
operator/( VImage a, std::vector<double> b ) 
{ 
	return( a.linear( vips::invert( b ), 0.0 ) ); 
}

示例#3

VImage 
operator/( VImage a, double b ) 
{ 
	return( a.linear( 1.0 / b, 0.0 ) ); 
}

示例#4

VImage 
operator*( VImage a, std::vector<double> b ) 
{ 
	return( a.linear( b, 0.0 ) ); 
}

示例#5

VImage 
operator*( std::vector<double> a, VImage b ) 
{
	return( b.linear( a, 0.0 ) ); 
}

示例#6

VImage 
operator*( VImage a, double b ) 
{ 
	return( a.linear( b, 0.0 ) ); 
}

示例#7

VImage 
operator*( double a, VImage b ) 
{
	return( b.linear( a, 0.0 ) ); 
}

示例#8

VImage 
operator-( VImage a, std::vector<double> b ) 
{ 
	return( a.linear( 1.0, vips::negate( b ) ) ); 
}

示例#9

VImage 
operator-( std::vector<double> a, VImage b ) 
{
	return( b.linear( -1.0, a ) ); 
}

示例#10

VImage 
operator-( VImage a, double b ) 
{ 
	return( a.linear( 1.0, -b ) ); 
}

示例#11

VImage 
operator-( double a, VImage b ) 
{
	return( b.linear( -1.0, a ) ); 
}

示例#12

VImage 
operator+( VImage a, std::vector<double> b ) 
{ 
	return( a.linear( 1.0, b ) ); 
}

示例#13

文件： try.cpp 项目： eeertekin/libvips

int
main( int argc, char **argv )
{
	GOptionContext *context;
	GOptionGroup *main_group;
	GError *error = NULL;

	if( vips_init( argv[0] ) )
		vips_error_exit( NULL ); 

	context = g_option_context_new( "" ); 

	main_group = g_option_group_new( NULL, NULL, NULL, NULL, NULL );
	g_option_context_set_main_group( context, main_group );
	g_option_context_add_group( context, vips_get_option_group() );

	if( !g_option_context_parse( context, &argc, &argv, &error ) ) {
		if( error ) {
			fprintf( stderr, "%s\n", error->message );
			g_error_free( error );
		}

		vips_error_exit( NULL );
	}


{ 
	VImage in = VImage::new_from_file( argv[1], 
		VImage::option()->set( "access", VIPS_ACCESS_SEQUENTIAL_UNBUFFERED ) ); 
	double avg;

	avg = in.avg(); 

	printf( "avg = %g\n", avg ); 
}

{ 
	VImage in = VImage::new_from_file( argv[1], 
		VImage::option()->set( "access", VIPS_ACCESS_SEQUENTIAL_UNBUFFERED ) ); 

	VImage out = in.embed( 10, 10, 1000, 1000, 
		VImage::option()->set( "extend", VIPS_EXTEND_BACKGROUND )->
		set( "background", 128 ) );

	out.write_to_file( "embed.jpg" );
}

{ 
	VImage in = VImage::new_from_file( argv[1], 
		VImage::option()->set( "access", VIPS_ACCESS_SEQUENTIAL_UNBUFFERED ) ); 
	double a[] = { 1.0, 2.0, 3.0 }; 
	double b[] = { 4.0, 5.0, 6.0 }; 

	std::vector<double> avec( a, a + VIPS_NUMBER( a ) ); 
	std::vector<double> bvec( b, b + VIPS_NUMBER( b ) ); 

	VImage out = in.linear( avec, bvec ); 

	out.write_to_file( "linear.jpg" );
}

{ 
	VImage in = VImage::new_from_file( argv[1], 
		VImage::option()->set( "access", VIPS_ACCESS_SEQUENTIAL_UNBUFFERED ) ); 
	VImage out = in.linear( 1, 2 ); 

	out.write_to_file( "linear1.jpg" );
}

{ 
	VImage in = VImage::new_from_file( argv[1] ); 
	VImage out = in.new_from_image( 128 );

	out.write_to_file( "const.jpg" );
}

	vips_shutdown();

        return( 0 );
}

示例#14

文件： VImage.cpp 项目： lovell/libvips

VImage 
operator+( const std::vector<double> a, const VImage b ) 
{
	return( b.linear( 1.0, a ) ); 
}

示例#15

文件： VImage.cpp 项目： lovell/libvips

VImage 
operator+( const VImage a, double b ) 
{ 
	return( a.linear( 1.0, b ) ); 
}

示例#16

文件： VImage.cpp 项目： lovell/libvips

VImage 
operator+( double a, const VImage b ) 
{
	return( b.linear( 1.0, a ) ); 
}