vil_iris_generic_image Class Reference

#include <vil_iris.h>

Inheritance diagram for vil_iris_generic_image:

[legend]List of all members.

Detailed Description

Generic image implementation for iris (SGI) RGB files.

Definition at line 38 of file vil_iris.h.

Public Member Functions

vil_iris_generic_image (vil_stream *is, char *imagename="")

vil_iris_generic_image (vil_stream *is, unsigned int ni, unsigned int nj, unsigned int planes, vil_pixel_format format)

~vil_iris_generic_image ()

virtual unsigned int ni () const

Dimensions. Planes x ni(width) x nj(height).

virtual unsigned int nj () const

Dimensions: Planes x ni x nj.

virtual unsigned int nplanes () const

Dimensions: Planes x ni x nj.

virtual enum vil_pixel_format pixel_format () const

Pixel Format.

virtual vil_image_view_base_sptr get_copy_view (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const

virtual bool put_view (vil_image_view_base const &buf, unsigned int x0, unsigned int y0)

char const * file_format () const

Return a string describing the file format.

bool get_property (char const *tag, void *prop=0) const

Extra property information.

virtual vil_image_view_base_sptr get_view (unsigned i0, unsigned n_i, unsigned j0, unsigned n_j) const

Create a read/write view of the data.

vil_image_view_base_sptr get_view () const

Create a read/write view of all the data.

virtual vil_image_view_base_sptr get_copy_view (unsigned i0, unsigned n_i, unsigned j0, unsigned n_j) const =0

Create a read/write view of a copy of this data.

vil_image_view_base_sptr get_copy_view () const

Create a read/write view of a copy of all the data.

virtual bool put_view (const vil_image_view_base &im, unsigned i0, unsigned j0)=0

Put the data in this view back into the image source.

bool put_view (const vil_image_view_base &im)

Put the data in this view back into the image source at the origin.

virtual bool view_fits (const vil_image_view_base &im, unsigned i0, unsigned j0)

Check that a view will fit into the data at the given offset.

Protected Member Functions

bool read_offset_tables ()

vil_image_view_base_sptr get_section_rle (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const

vil_image_view_base_sptr get_section_verbatim (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const

void ref ()

void unref ()

Protected Attributes

vil_stream * is_

int magic_

unsigned int ni_

unsigned int nj_

unsigned int nplanes_

enum vil_pixel_format format_

int pixmin_

int pixmax_

int storage_

int dimension_

int colormap_

char imagename_ [81]

vil_streampos start_of_data_

int reference_count_

Private Member Functions

bool read_header ()

bool write_header ()

Private Attributes

unsigned long * starttab_

unsigned long * lengthtab_

Friends

class vil_iris_file_format

class vil_smart_ptr< vil_image_resource >

Related Functions

(Note that these are not member functions.)

template<class destT, class kernelT, class accumT>

vil_image_resource_sptr vil_convolve_1d (const vil_image_resource_sptr &src_im, const destT, const kernelT *kernel, int k_lo, int k_hi, const accumT, vil_convolve_boundary_option start_option, vil_convolve_boundary_option end_option)

Create an image_resource object which convolve kernel[x] x in [k_lo,k_hi] with srcT.

template<class destT, class kernelT, class accumT>

vil_image_resource_sptr vil_correlate_1d (const vil_image_resource_sptr &src_im, const destT, const kernelT *kernel, vcl_ptrdiff_t k_lo, vcl_ptrdiff_t k_hi, const accumT, vil_convolve_boundary_option start_option, vil_convolve_boundary_option end_option)

Create an image_resource object which correlate kernel[x] x in [k_lo,k_hi] with srcT.

bool vil_copy_deep (const vil_image_resource_sptr &src, vil_image_resource_sptr &dest)

Copy src to dest.

vil_image_resource_sptr vil_crop (const vil_image_resource_sptr &src, unsigned i0, unsigned n_i, unsigned j0, unsigned n_j)

Crop to a region of src.

vil_image_resource_sptr vil_decimate (const vil_image_resource_sptr &src, unsigned i_factor, unsigned j_factor=0)

decimate to a region of src.

vil_image_resource_sptr vil_load_image_resource (char const *filename)

Load an image resource object from a file.

vil_image_resource_sptr vil_new_image_resource (unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype)

Make a new image, similar format to the prototype.

vil_image_resource_sptr vil_new_image_resource (vil_stream *os, unsigned ni, unsigned nj, unsigned nplanes, vil_pixel_format format, char const *file_format)

Make a new image.

vil_image_resource_sptr vil_new_image_resource (char const *filename, unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype, char const *file_format)

Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".

vil_image_resource_sptr vil_new_image_resource (char const *filename, unsigned ni, unsigned nj, unsigned nplanes, vil_pixel_format format, char const *file_format)

Make a new image.

vil_image_resource_sptr vil_new_image_resource (vil_stream *os, unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype, char const *file_format)

Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".

vil_image_resource_sptr vil_new_image_resource (char const *filename, unsigned ni, unsigned nj, unsigned nplanes, vil_image_resource_sptr const &prototype, char const *format=0)

Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".

vil_image_resource_sptr vil_new_image_resource (vil_stream *os, unsigned ni, unsigned nj, unsigned nplanes, vil_image_resource_sptr const &prototype, char const *file_format=0)

Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".

bool vil_save_image_resource (const vil_image_resource_sptr &ir, char const *filename, char const *file_format)

Send vil_image_resource to disk.

bool vil_save_image_resource (const vil_image_resource_sptr &ir, char const *filename)

Save vil_image_resource to file, deducing format from filename.

Constructor & Destructor Documentation

vil_iris_generic_image::vil_iris_generic_image ( vil_stream * is,

char * imagename = ""

)

Definition at line 85 of file vil_iris.cxx.

vil_iris_generic_image::vil_iris_generic_image ( vil_stream * is,

unsigned int ni,

unsigned int nj,

unsigned int planes,

vil_pixel_format format

)

Definition at line 104 of file vil_iris.cxx.

vil_iris_generic_image::~vil_iris_generic_image ( )

Definition at line 125 of file vil_iris.cxx.

Member Function Documentation

char const * vil_iris_generic_image::file_format ( ) const [virtual]

Return a string describing the file format.
Only file images have a format, others return 0
Reimplemented from vil_image_resource.
Definition at line 99 of file vil_iris.cxx.

vil_image_view_base_sptr vil_image_resource::get_copy_view ( ) const [inline, inherited]

Create a read/write view of a copy of all the data.

Reimplemented in vil_j2k_image, and vil_nitf2_image.
Definition at line 79 of file vil_image_resource.h.

virtual vil_image_view_base_sptr vil_image_resource::get_copy_view ( unsigned i0,

unsigned n_i,

unsigned j0,

unsigned n_j

) const [pure virtual, inherited]

Create a read/write view of a copy of this data.
This function will always return a multi-plane scalar-pixel view of the data.
Returns:
0 if unable to get view of correct size, or if resource is write-only.

Implemented in vil_convolve_1d_resource< kernelT, accumT, destT >, vil_correlate_1d_resource< kernelT, accumT, destT >, vil_bmp_image, vil_dicom_image, vil_j2k_image, vil_jpeg_image, vil_nitf2_image, vil_png_image, vil_pnm_image, vil_pyramid_image_list, vil_ras_image, vil_blocked_image_facade, vil_blocked_image_resource, vil_clamp_image_resource, vil_crop_image_resource, vil_decimate_image_resource, vil_flip_lr_image_resource, vil_flip_ud_image_resource, vil_image_resource_plugin, vil_memory_image, vil_plane_image_resource, vil_pyramid_image_resource, and vil_transpose_image_resource.

vil_image_view_base_sptr vil_iris_generic_image::get_copy_view ( unsigned int x0,

unsigned int ni,

unsigned int y0,

unsigned int nj

) const [virtual]

Definition at line 254 of file vil_iris.cxx.

bool vil_iris_generic_image::get_property ( char const * tag,

void * prop = 0

) const [virtual]

Extra property information.

Implements vil_image_resource.
Definition at line 93 of file vil_iris.cxx.

vil_image_view_base_sptr vil_iris_generic_image::get_section_rle ( unsigned int x0,

unsigned int ni,

unsigned int y0,

unsigned int nj

) const [protected]

Definition at line 304 of file vil_iris.cxx.

vil_image_view_base_sptr vil_iris_generic_image::get_section_verbatim ( unsigned int x0,

unsigned int ni,

unsigned int y0,

unsigned int nj

) const [protected]

Definition at line 269 of file vil_iris.cxx.

vil_image_view_base_sptr vil_image_resource::get_view ( ) const [inline, inherited]

Create a read/write view of all the data.

Definition at line 68 of file vil_image_resource.h.

virtual vil_image_view_base_sptr vil_image_resource::get_view ( unsigned i0,

unsigned n_i,

unsigned j0,

unsigned n_j

) const [inline, virtual, inherited]

Create a read/write view of the data.
Modifying this view might modify the actual data. If you want to modify this data in place, call put_view after you done, and it should work efficiently. This function will always return a multi-plane scalar-pixel view of the data.
Returns:
0 if unable to get view of correct size, or if resource is write-only.
If you want to fill an existing view (e.g. a window onto some other image), then use
vil_reformat(data->get_view(..), window);

Reimplemented in vil_dicom_image, vil_clamp_image_resource, vil_crop_image_resource, vil_decimate_image_resource, vil_flip_lr_image_resource, vil_flip_ud_image_resource, vil_memory_image, vil_plane_image_resource, and vil_transpose_image_resource.
Definition at line 63 of file vil_image_resource.h.

virtual unsigned int vil_iris_generic_image::ni ( ) const [inline, virtual]

Dimensions. Planes x ni(width) x nj(height).

Implements vil_image_resource.
Definition at line 56 of file vil_iris.h.

virtual unsigned int vil_iris_generic_image::nj ( ) const [inline, virtual]

Dimensions: Planes x ni x nj.
The number of pixels in each column.
Implements vil_image_resource.
Definition at line 57 of file vil_iris.h.

virtual unsigned int vil_iris_generic_image::nplanes ( ) const [inline, virtual]

Dimensions: Planes x ni x nj.
This concept is treated as a synonym to components.
Implements vil_image_resource.
Definition at line 58 of file vil_iris.h.

virtual enum vil_pixel_format vil_iris_generic_image::pixel_format ( ) const [inline, virtual]

Pixel Format.
A standard RGB RGB RGB of chars image has pixel_format() == VIL_PIXEL_FORMAT_BYTE
Implements vil_image_resource.
Definition at line 60 of file vil_iris.h.

bool vil_image_resource::put_view ( const vil_image_view_base & im ) [inline, inherited]

Put the data in this view back into the image source at the origin.

Definition at line 91 of file vil_image_resource.h.

bool vil_iris_generic_image::put_view ( vil_image_view_base const & buf,

unsigned int x0,

unsigned int y0

) [virtual]

Definition at line 349 of file vil_iris.cxx.

bool vil_iris_generic_image::read_header ( ) [private]

Definition at line 132 of file vil_iris.cxx.

bool vil_iris_generic_image::read_offset_tables ( ) [protected]

Definition at line 422 of file vil_iris.cxx.

void vil_image_resource::ref ( ) [inline, protected, inherited]

Definition at line 109 of file vil_image_resource.h.

void vil_image_resource::unref ( ) [inline, protected, inherited]

Definition at line 110 of file vil_image_resource.h.

bool vil_image_resource::view_fits ( const vil_image_view_base & im,

unsigned i0,

unsigned j0

) [virtual, inherited]

Check that a view will fit into the data at the given offset.
This includes checking that the pixel type is scalar.
Definition at line 30 of file vil_image_resource.cxx.

bool vil_iris_generic_image::write_header ( ) [private]

Definition at line 192 of file vil_iris.cxx.

Friends And Related Function Documentation

template<class destT, class kernelT, class accumT>

vil_image_resource_sptr vil_convolve_1d ( const vil_image_resource_sptr & src_im,

const destT ,

const kernelT * kernel,

int k_lo,

int k_hi,

const accumT ,

vil_convolve_boundary_option start_option,

vil_convolve_boundary_option end_option

) [related, inherited]

Create an image_resource object which convolve kernel[x] x in [k_lo,k_hi] with srcT.

Note:
This function reverses the kernel. If you don't want the kernel reversed, use vil_correlate_1d instead.

Parameters:

kernel should point to tap 0.

Definition at line 404 of file vil_convolve_1d.h.

bool vil_copy_deep ( const vil_image_resource_sptr & src,

vil_image_resource_sptr & dest

) [related, inherited]

Copy src to dest.
This is useful if you want to copy on image into a window on another image. src and dest must have identical sizes, and pixel-types. Returns false if the copy failed. O(size).
Definition at line 44 of file vil_copy.cxx.

template<class destT, class kernelT, class accumT>

vil_image_resource_sptr vil_correlate_1d ( const vil_image_resource_sptr & src_im,

const destT ,

const kernelT * kernel,

vcl_ptrdiff_t k_lo,

vcl_ptrdiff_t k_hi,

const accumT ,

vil_convolve_boundary_option start_option,

vil_convolve_boundary_option end_option

) [related, inherited]

Create an image_resource object which correlate kernel[x] x in [k_lo,k_hi] with srcT.

Note:
This function does not reverse the kernel. If you want the kernel reversed, use vil_convolve_1d instead.

Parameters:

kernel should point to tap 0.

Definition at line 214 of file vil_correlate_1d.h.

vil_image_resource_sptr vil_crop ( const vil_image_resource_sptr & src,

unsigned i0,

unsigned n_i,

unsigned j0,

unsigned n_j

) [related, inherited]

Crop to a region of src.

Definition at line 14 of file vil_crop.cxx.

vil_image_resource_sptr vil_decimate ( const vil_image_resource_sptr & src,

unsigned i_factor,

unsigned j_factor = 0

) [related, inherited]

decimate to a region of src.

friend class vil_iris_file_format [friend]

Definition at line 46 of file vil_iris.h.

vil_image_resource_sptr vil_load_image_resource ( char const * filename ) [related, inherited]

Load an image resource object from a file.

Definition at line 52 of file vil_load.cxx.

vil_image_resource_sptr vil_new_image_resource ( vil_stream * os,

unsigned ni,

unsigned nj,

unsigned nplanes,

vil_image_resource_sptr const & prototype,

char const * file_format = 0

) [related, inherited]

Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".

vil_image_resource_sptr vil_new_image_resource ( char const * filename,

unsigned ni,

unsigned nj,

unsigned nplanes,

vil_image_resource_sptr const & prototype,

char const * format = 0

) [related, inherited]

Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".

vil_image_resource_sptr vil_new_image_resource ( vil_stream * os,

unsigned ni,

unsigned nj,

vil_image_resource_sptr const & prototype,

char const * file_format

) [related, inherited]

Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".

Definition at line 141 of file vil_new.cxx.

vil_image_resource_sptr vil_new_image_resource ( char const * filename,

unsigned ni,

unsigned nj,

unsigned nplanes,

vil_pixel_format format,

char const * file_format

) [related, inherited]

Make a new image.

Definition at line 122 of file vil_new.cxx.

vil_image_resource_sptr vil_new_image_resource ( char const * filename,

unsigned ni,

unsigned nj,

vil_image_resource_sptr const & prototype,

char const * file_format

) [related, inherited]

Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".

Definition at line 103 of file vil_new.cxx.

vil_image_resource_sptr vil_new_image_resource ( vil_stream * os,

unsigned ni,

unsigned nj,

unsigned nplanes,

vil_pixel_format format,

char const * file_format

) [related, inherited]

Make a new image.

Definition at line 76 of file vil_new.cxx.

vil_image_resource_sptr vil_new_image_resource ( unsigned ni,

unsigned nj,

vil_image_resource_sptr const & prototype

) [related, inherited]

Make a new image, similar format to the prototype.

Definition at line 68 of file vil_new.cxx.

bool vil_save_image_resource ( const vil_image_resource_sptr & ir,

char const * filename

) [related, inherited]

Save vil_image_resource to file, deducing format from filename.

bool vil_save_image_resource ( const vil_image_resource_sptr & ir,

char const * filename,

char const * file_format

) [related, inherited]

Send vil_image_resource to disk.

friend class vil_smart_ptr< vil_image_resource > [friend, inherited]

Definition at line 108 of file vil_image_resource.h.

Member Data Documentation

int vil_iris_generic_image::colormap_ [protected]

Definition at line 82 of file vil_iris.h.

int vil_iris_generic_image::dimension_ [protected]

Definition at line 81 of file vil_iris.h.

enum vil_pixel_format vil_iris_generic_image::format_ [protected]

Definition at line 76 of file vil_iris.h.

char vil_iris_generic_image::imagename_[81] [protected]

Definition at line 83 of file vil_iris.h.

vil_stream* vil_iris_generic_image::is_ [protected]

Definition at line 69 of file vil_iris.h.

unsigned long* vil_iris_generic_image::lengthtab_ [private]

Definition at line 41 of file vil_iris.h.

int vil_iris_generic_image::magic_ [protected]

Definition at line 71 of file vil_iris.h.

unsigned int vil_iris_generic_image::ni_ [protected]

Definition at line 73 of file vil_iris.h.

unsigned int vil_iris_generic_image::nj_ [protected]

Definition at line 74 of file vil_iris.h.

unsigned int vil_iris_generic_image::nplanes_ [protected]

Definition at line 75 of file vil_iris.h.

int vil_iris_generic_image::pixmax_ [protected]

Definition at line 79 of file vil_iris.h.

int vil_iris_generic_image::pixmin_ [protected]

Definition at line 78 of file vil_iris.h.

int vil_image_resource::reference_count_ [protected, inherited]

Definition at line 113 of file vil_image_resource.h.

vil_streampos vil_iris_generic_image::start_of_data_ [protected]

Definition at line 84 of file vil_iris.h.

unsigned long* vil_iris_generic_image::starttab_ [private]

Definition at line 40 of file vil_iris.h.

int vil_iris_generic_image::storage_ [protected]

Definition at line 80 of file vil_iris.h.

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

core/vil/file_formats/vil_iris.h
core/vil/file_formats/vil_iris.cxx

Generated on Thu Jan 10 14:40:07 2008 for core/vil by

1.4.4


Public Member Functions
	vil_iris_generic_image (vil_stream is, char imagename="")
	vil_iris_generic_image (vil_stream *is, unsigned int ni, unsigned int nj, unsigned int planes, vil_pixel_format format)
	~vil_iris_generic_image ()
virtual unsigned int	ni () const
	Dimensions. Planes x ni(width) x nj(height).
virtual unsigned int	nj () const
	Dimensions: Planes x ni x nj.
virtual unsigned int	nplanes () const
	Dimensions: Planes x ni x nj.
virtual enum vil_pixel_format	pixel_format () const
	Pixel Format.
virtual vil_image_view_base_sptr	get_copy_view (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const
virtual bool	put_view (vil_image_view_base const &buf, unsigned int x0, unsigned int y0)
char const *	file_format () const
	Return a string describing the file format.
bool	get_property (char const tag, void prop=0) const
	Extra property information.
virtual vil_image_view_base_sptr	get_view (unsigned i0, unsigned n_i, unsigned j0, unsigned n_j) const
	Create a read/write view of the data.
vil_image_view_base_sptr	get_view () const
	Create a read/write view of all the data.
virtual vil_image_view_base_sptr	get_copy_view (unsigned i0, unsigned n_i, unsigned j0, unsigned n_j) const =0
	Create a read/write view of a copy of this data.
vil_image_view_base_sptr	get_copy_view () const
	Create a read/write view of a copy of all the data.
virtual bool	put_view (const vil_image_view_base &im, unsigned i0, unsigned j0)=0
	Put the data in this view back into the image source.
bool	put_view (const vil_image_view_base &im)
	Put the data in this view back into the image source at the origin.
virtual bool	view_fits (const vil_image_view_base &im, unsigned i0, unsigned j0)
	Check that a view will fit into the data at the given offset.
Protected Member Functions
bool	read_offset_tables ()
vil_image_view_base_sptr	get_section_rle (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const
vil_image_view_base_sptr	get_section_verbatim (unsigned int x0, unsigned int ni, unsigned int y0, unsigned int nj) const
void	ref ()
void	unref ()
Protected Attributes
vil_stream *	is_
int	magic_
unsigned int	ni_
unsigned int	nj_
unsigned int	nplanes_
enum vil_pixel_format	format_
int	pixmin_
int	pixmax_
int	storage_
int	dimension_
int	colormap_
char	imagename_ [81]
vil_streampos	start_of_data_
int	reference_count_
Private Member Functions
bool	read_header ()
bool	write_header ()
Private Attributes
unsigned long *	starttab_
unsigned long *	lengthtab_
Friends
class	vil_iris_file_format
class	vil_smart_ptr< vil_image_resource >
Related Functions
(Note that these are not member functions.)
template<class destT, class kernelT, class accumT>
vil_image_resource_sptr	vil_convolve_1d (const vil_image_resource_sptr &src_im, const destT, const kernelT *kernel, int k_lo, int k_hi, const accumT, vil_convolve_boundary_option start_option, vil_convolve_boundary_option end_option)
	Create an image_resource object which convolve kernel[x] x in [k_lo,k_hi] with srcT.
template<class destT, class kernelT, class accumT>
vil_image_resource_sptr	vil_correlate_1d (const vil_image_resource_sptr &src_im, const destT, const kernelT *kernel, vcl_ptrdiff_t k_lo, vcl_ptrdiff_t k_hi, const accumT, vil_convolve_boundary_option start_option, vil_convolve_boundary_option end_option)
	Create an image_resource object which correlate kernel[x] x in [k_lo,k_hi] with srcT.
bool	vil_copy_deep (const vil_image_resource_sptr &src, vil_image_resource_sptr &dest)
	Copy src to dest.
vil_image_resource_sptr	vil_crop (const vil_image_resource_sptr &src, unsigned i0, unsigned n_i, unsigned j0, unsigned n_j)
	Crop to a region of src.
vil_image_resource_sptr	vil_decimate (const vil_image_resource_sptr &src, unsigned i_factor, unsigned j_factor=0)
	decimate to a region of src.
vil_image_resource_sptr	vil_load_image_resource (char const *filename)
	Load an image resource object from a file.
vil_image_resource_sptr	vil_new_image_resource (unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype)
	Make a new image, similar format to the prototype.
vil_image_resource_sptr	vil_new_image_resource (vil_stream os, unsigned ni, unsigned nj, unsigned nplanes, vil_pixel_format format, char const file_format)
	Make a new image.
vil_image_resource_sptr	vil_new_image_resource (char const filename, unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype, char const file_format)
	Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".
vil_image_resource_sptr	vil_new_image_resource (char const filename, unsigned ni, unsigned nj, unsigned nplanes, vil_pixel_format format, char const file_format)
	Make a new image.
vil_image_resource_sptr	vil_new_image_resource (vil_stream os, unsigned ni, unsigned nj, vil_image_resource_sptr const &prototype, char const file_format)
	Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".
vil_image_resource_sptr	vil_new_image_resource (char const filename, unsigned ni, unsigned nj, unsigned nplanes, vil_image_resource_sptr const &prototype, char const format=0)
	Make a new vil_image_resource, writing to file "filename", size ni x nj, copying pixel format etc from "prototype".
vil_image_resource_sptr	vil_new_image_resource (vil_stream os, unsigned ni, unsigned nj, unsigned nplanes, vil_image_resource_sptr const &prototype, char const file_format=0)
	Make a new vil_image_resource, writing to stream "os", size ni x nj, copying pixel format etc from "prototype".
bool	vil_save_image_resource (const vil_image_resource_sptr &ir, char const filename, char const file_format)
	Send vil_image_resource to disk.
bool	vil_save_image_resource (const vil_image_resource_sptr &ir, char const *filename)
	Save vil_image_resource to file, deducing format from filename.