Export Isis cubes into standard formats. More...

#include <ImageExporter.h>

Inheritance diagram for Isis::ImageExporter:

Collaboration diagram for Isis::ImageExporter:

Public Member Functions
	ImageExporter ()
	Construct the exporter.

virtual	~ImageExporter ()
	Destruct the exporter.

void	operator() (vector< Buffer * > &in) const
	The method for writing a line of input image data (with potentially several bands representing color channels) to the output image.

virtual void	write (FileName outputName, int quality=100, QString compression="none", UserInterface *ui=nullptr)
	Export the Isis cube channels to the given standard image.

int	samples () const
	Number of samples (columns) in the output image.

int	lines () const
	Number of lines (rows) in the output image.

int	bands () const
	Number of bands (channels) in the output image.

double	inputMinimum (int channel) const
	Returns the input minimum for the given channel.

double	inputMaximum (int channel) const
	Returns the input maximum for the given channel.

void	setOutputPixelRange (double outputPixelMinimum, double outputPixelMaximum)
	Set the DN floor and ceiling for the exported image.

virtual void	setGrayscale (ExportDescription &desc)=0
	Pure virtual method for setting up an export to a grayscale image.

virtual void	setRgb (ExportDescription &desc)=0
	Pure virtual method for setting up an export to an RGB image.

virtual void	setRgba (ExportDescription &desc)=0
	Pure virtual method for setting up an export to an RGBA image.

Static Public Member Functions
static ImageExporter *	fromFormat (QString format)
	A static (factory) method for constructing an ImageExporter instance from an output format.

Protected Types
typedef void(ImageExporter::*	WriteChannels) (vector< Buffer * > &in) const
	Friendly alias for a method used to write a particular color channel.

Protected Member Functions
virtual void	initialize (ExportDescription &desc)=0
	Generic initialization with the export description.

void	setExtension (QString extension)
	Sets the extension for the output image and generates the extension for the world file from it.

void	setExportDescription (ExportDescription &desc)
	Sets the description for the output image.

Cube *	initializeProcess ()
	Sets up the export process with the parameters described within the given description.

QString	extension () const
	Gets the extension for the output image.

ExportDescription &	exportDescription () const
	Gets the description for the output image.

ProcessExport &	process () const
	Get a reference to the process object, useful for subclasses to access and manipulate the process.

PixelType	pixelType () const
	Returns the pixel type.

virtual int	outputPixelValue (double dn) const
	Return the output clamped integer pixel value from the input double-precision DN.

virtual void	writeGrayscale (vector< Buffer * > &in) const =0
	Pure virtual method for writing a line of grayscale data to the output image.

virtual void	writeRgb (vector< Buffer * > &in) const =0
	Pure virtual method for writing a line of RGB data to the output image.

virtual void	writeRgba (vector< Buffer * > &in) const =0
	Pure virtual method for writing a line of RGBA data to the output image.

Detailed Description

Export Isis cubes into standard formats.

Abstract base class for a series of image exporters. Each exporter handles a specialized suite of standard image formats, and can be used as a black-box with the write() method, or for finer control, the importer can act as a functor in a ProcessExport routine.

Author: 2012-04-03 Travis Addair

Member Typedef Documentation

◆ WriteChannels

typedef void(ImageExporter::* Isis::ImageExporter::WriteChannels) (vector< Buffer * > &in) const

protected

Friendly alias for a method used to write a particular color channel.

Constructor & Destructor Documentation

◆ ImageExporter()

Isis::ImageExporter::ImageExporter ( )

Construct the exporter.

◆ ~ImageExporter()

Isis::ImageExporter::~ImageExporter ( )

virtual

Destruct the exporter.

Also deletes the process object.

Member Function Documentation

◆ bands()

int Isis::ImageExporter::bands ( ) const

Number of bands (channels) in the output image.

Returns: The depth of the output

Referenced by Isis::QtExporter::checkDataSize(), Isis::JP2Exporter::createBuffer(), Isis::TiffExporter::createBuffer(), Isis::TiffExporter::setBuffer(), Isis::JP2Exporter::write(), and Isis::TiffExporter::write().

◆ exportDescription()

ExportDescription & Isis::ImageExporter::exportDescription ( ) const

protected

Gets the description for the output image.

Returns: The export description

Referenced by initializeProcess().

◆ extension()

QString Isis::ImageExporter::extension ( ) const

protected

Gets the extension for the output image.

Returns: The extension for the output image

Referenced by setExtension(), Isis::JP2Exporter::write(), Isis::QtExporter::write(), and Isis::TiffExporter::write().

◆ fromFormat()

ImageExporter * Isis::ImageExporter::fromFormat ( QString format )

static

A static (factory) method for constructing an ImageExporter instance from an output format.

The specific subclass of the returned instance is determined from the desired output image format provided. Each subclass has knowledge of whether or not it can write a particular format. Because the ability to export an image format is not mutually exclusive amongst exporters, the order of condieration here matters. For example, using a TIFF exporter takes precedence over a Qt exporter for TIFF images, because the former can process cubes greater than 2GB while the latter cannot. It is the caller's responsibility to delete the exporter instance when they are finished with it.

Parameters

format The format for the output image to be created

Returns: A pointer to the instantiated exporter owned by the caller

References _FILEINFO_, Isis::JP2Exporter::canWriteFormat(), Isis::QtExporter::canWriteFormat(), Isis::TiffExporter::canWriteFormat(), and Isis::IException::Programmer.

◆ initialize()

void Isis::ImageExporter::initialize ( ExportDescription & desc )

protectedpure virtual

Generic initialization with the export description.

Set the export description given the pixel type of the passed in description. Use the number of channels in the export description to determine the write method (i.e. grayscale, rgb, or rgba). This will also set the member variables for the number of samples, lines, and bands.

Parameters

desc	Export description containing necessary channel information

Implemented in Isis::StreamExporter.

References initializeProcess(), and setExportDescription().

Referenced by Isis::StreamExporter::initialize().

◆ initializeProcess()

Cube * Isis::ImageExporter::initializeProcess ( )

protected

Sets up the export process with the parameters described within the given description.

This method determines determines whether to write the data as grayscale, RGB, or RGBA. It then opens a cube for retrieving the input data and establishing the dimensions of the output image. Next, the ProcessExport format is set to BIL and the ProcessExport output pixel type, output valid data range, and output null are set based on the given export description. Last, the absolute output pixel range is set based on the given description (this is the smallest and largest allowed pixel values in the output, including "special" pixel values).

Returns: A cube pointer to the first channel created, owned by the process

References _FILEINFO_, Isis::ProcessExport::BIL, Isis::ExportDescription::channelCount(), exportDescription(), Isis::Cube::lineCount(), Isis::ExportDescription::outputPixelAbsoluteMax(), Isis::ExportDescription::outputPixelAbsoluteMin(), Isis::ExportDescription::outputPixelNull(), Isis::ExportDescription::outputPixelValidMax(), Isis::ExportDescription::outputPixelValidMin(), pixelType(), process(), Isis::IException::Programmer, Isis::Cube::sampleCount(), Isis::Cube::setFormat(), setOutputPixelRange(), writeGrayscale(), writeRgb(), and writeRgba().

Referenced by initialize().

◆ inputMaximum()

double Isis::ImageExporter::inputMaximum ( int channel ) const

Returns the input maximum for the given channel.

Any value of max in the input cube will be mapped to the output max of the output channel.

Parameters

channel Index of the channel within the process

Returns: The maximum DN in the input mapped to the maximum of the output

References Isis::ProcessExport::GetInputMaximum().

◆ inputMinimum()

double Isis::ImageExporter::inputMinimum ( int channel ) const

Returns the input minimum for the given channel.

Any value of min in the input cube will be mapped to the output min of the output channel.

Parameters

channel Index of the channel within the process

Returns: The minimum DN in the input mapped to the minimum of the output

References Isis::ProcessExport::GetInputMinimum().

◆ lines()

int Isis::ImageExporter::lines ( ) const

Number of lines (rows) in the output image.

Returns: The height of the output

Referenced by Isis::QtExporter::checkDataSize(), Isis::QtExporter::setGrayscale(), Isis::QtExporter::setRgb(), Isis::QtExporter::setRgba(), Isis::JP2Exporter::write(), and Isis::TiffExporter::write().

◆ operator()()

void Isis::ImageExporter::operator() ( vector< Buffer * > & in ) const

The method for writing a line of input image data (with potentially several bands representing color channels) to the output image.

It is called for each line of data in the input images (provides a vector containing the same line from each single-band input image). Enables the exporter to be used as a functor in a custom ProcessExport routine, bypassing the black-box write() method entirely.

Parameters

in	Vector containing a line of input data from each input channel

◆ outputPixelValue()

int Isis::ImageExporter::outputPixelValue ( double dn ) const

protectedvirtual

Return the output clamped integer pixel value from the input double-precision DN.

Parameters

dn	The input DN

Returns: The pixel value for the output

Referenced by Isis::QtExporter::writeGrayscale(), Isis::StreamExporter::writeGrayscale(), Isis::QtExporter::writeRgb(), Isis::StreamExporter::writeRgb(), Isis::QtExporter::writeRgba(), and Isis::StreamExporter::writeRgba().

◆ pixelType()

PixelType Isis::ImageExporter::pixelType ( ) const

protected

Returns the pixel type.

Defaults to None if not set by the user.

Returns: The pixel type: {None, UnsignedByte, SignedWord, UnsignedWord}

References Isis::None, and Isis::ExportDescription::pixelType().

Referenced by Isis::JP2Exporter::createBuffer(), Isis::TiffExporter::createBuffer(), initializeProcess(), Isis::JP2Exporter::setBuffer(), Isis::TiffExporter::setBuffer(), Isis::JP2Exporter::write(), Isis::TiffExporter::write(), and Isis::JP2Exporter::writeLine().

◆ process()

ProcessExport & Isis::ImageExporter::process ( ) const

protected

Get a reference to the process object, useful for subclasses to access and manipulate the process.

Returns: A reference to the process object

Referenced by initializeProcess(), and write().

◆ samples()

int Isis::ImageExporter::samples ( ) const

Number of samples (columns) in the output image.

Returns: The width of the output

Referenced by Isis::QtExporter::checkDataSize(), Isis::JP2Exporter::createBuffer(), Isis::TiffExporter::createBuffer(), Isis::QtExporter::setGrayscale(), Isis::QtExporter::setRgb(), Isis::QtExporter::setRgba(), Isis::JP2Exporter::write(), and Isis::TiffExporter::write().

◆ setExportDescription()

void Isis::ImageExporter::setExportDescription ( ExportDescription & desc )

protected

Sets the description for the output image.

Parameters

desc	The export description

Referenced by initialize().

◆ setExtension()

void Isis::ImageExporter::setExtension ( QString extension )

protected

Sets the extension for the output image and generates the extension for the world file from it.

Parameters

extension The extension for the output image

References extension().

Referenced by Isis::JP2Exporter::JP2Exporter(), Isis::QtExporter::QtExporter(), and Isis::TiffExporter::TiffExporter().

◆ setGrayscale()

virtual void Isis::ImageExporter::setGrayscale ( ExportDescription & desc )

pure virtual

Pure virtual method for setting up an export to a grayscale image.

Parameters

desc	The description describing the export parameters

Implemented in Isis::QtExporter, and Isis::StreamExporter.

◆ setOutputPixelRange()

void Isis::ImageExporter::setOutputPixelRange	(	double	outputPixelMinimum,
		double	outputPixelMaximum )

Set the DN floor and ceiling for the exported image.

All DNs less than the min will be set to the min in the exported image. Similarly, all DNs greater than the max will be set to the max in the exported image.

Note: These values may be "special". For example, if Null pixels are exported to 0.0 and the minimum valid pixels are exported to 2.0, then 0.0 should be passed in for the value of the min parameter.

Parameters

min	The absolute minimum output DN value.
max	The absolute maximum output DN value.

Referenced by initializeProcess().

◆ setRgb()

virtual void Isis::ImageExporter::setRgb ( ExportDescription & desc )

pure virtual

Pure virtual method for setting up an export to an RGB image.

Parameters

desc	The description describing the export parameters

Implemented in Isis::QtExporter, and Isis::StreamExporter.

◆ setRgba()

virtual void Isis::ImageExporter::setRgba ( ExportDescription & desc )

pure virtual

Pure virtual method for setting up an export to an RGBA image.

Parameters

desc	The description describing the export parameters

Implemented in Isis::QtExporter, and Isis::StreamExporter.

◆ write()

void Isis::ImageExporter::write	(	FileName	outputName,
		int	quality = 100,
		QString	compression = "none",
		UserInterface *	ui = nullptr )

virtual

Export the Isis cube channels to the given standard image.

If supported by the specific exporter child, will also produce an image with the given scaled quality. Will also use the selected compression algorithm if supported by the image format. This will do a black-box export using a ProcessExport routine. After the export is completed, a world file will also be created if a map projection exists.

Parameters

outputName	The filename of the output cube
quality	The quality of the output from 0 to 100, defaults to 100
compression	The compression algorithm used. Image format specific.
ui	The optional user interface to set the input image pixel range.

Reimplemented in Isis::JP2Exporter, Isis::QtExporter, and Isis::TiffExporter.

References process().

Referenced by Isis::JP2Exporter::write(), Isis::QtExporter::write(), and Isis::TiffExporter::write().

◆ writeGrayscale()

virtual void Isis::ImageExporter::writeGrayscale ( vector< Buffer * > & in ) const

protectedpure virtual

Pure virtual method for writing a line of grayscale data to the output image.

Parameters

in	Vector containing a single grayscale input line

Implemented in Isis::QtExporter, and Isis::StreamExporter.

Referenced by initializeProcess().

◆ writeRgb()

virtual void Isis::ImageExporter::writeRgb ( vector< Buffer * > & in ) const

protectedpure virtual

Pure virtual method for writing a line of RGB data to the output image.

Parameters

in	Vector containing three input lines (red, green, blue)

Implemented in Isis::QtExporter, and Isis::StreamExporter.

Referenced by initializeProcess().

◆ writeRgba()

virtual void Isis::ImageExporter::writeRgba ( vector< Buffer * > & in ) const

protectedpure virtual

Pure virtual method for writing a line of RGBA data to the output image.

Parameters

in	Vector containing four input lines (red, green, blue, alpha)

Implemented in Isis::QtExporter, and Isis::StreamExporter.

Referenced by initializeProcess().

The documentation for this class was generated from the following files:

/Users/astamile/ISIS3/isis/src/base/objs/ImageExporter/ImageExporter.h
/Users/astamile/ISIS3/isis/src/base/objs/ImageExporter/ImageExporter.cpp

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Detailed Description

Member Typedef Documentation

◆ WriteChannels

Constructor & Destructor Documentation

◆ ImageExporter()

◆ ~ImageExporter()

Member Function Documentation

◆ bands()

◆ exportDescription()

◆ extension()

◆ fromFormat()

◆ initialize()

◆ initializeProcess()

◆ inputMaximum()

◆ inputMinimum()

◆ lines()

◆ operator()()

◆ outputPixelValue()

◆ pixelType()

◆ process()

◆ samples()

◆ setExportDescription()

◆ setExtension()

◆ setGrayscale()

◆ setOutputPixelRange()

◆ setRgb()

◆ setRgba()

◆ write()

◆ writeGrayscale()

◆ writeRgb()

◆ writeRgba()