vil_nitf2_image Class Reference

#include <vil_nitf2_image.h>

Inheritance diagram for vil_nitf2_image:

[legend]List of all members.

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Detailed Description

Class for reading NITF 2.1 imagery files.

It works just like any other vil_image_resource class except that it does support retrieving multiple images from the same file. Call nimages() to find out how many images are in this resource, and then call set_current_image() to tell the class which image you want to work with presently. All regular vil_image_resource functions will operate on the current image.

You can access image header information through get_image_headers() and file header information through get_header().

Known reading limitations:

• The only supported compression schemes are uncompressed (all 4 different types of data layouts: band sequential, band interleaved, band interleaved by row, and band interleaved by pixel) and JPEG 2000 compression (via plugin). Other forms of compression do not work (eg. JPEG (regular, non-j2k)
• Writing is unsupported at this time
• graphic segments are not read in
• text segments are not read in
• The class was designed to handle images with PVTYPE=C (complex), but images of this type are completely untested.

Things that do work:

• Reading uncompressed and image data (ints, shorts, 8 bit int, floats etc)
• parsing and validating file headers, and image headers
• enum_data masks (and pad pixels) are supported through vil_nitf2_data_mask_table
• PJUST = L
• Images with LUTS will read in correctly, but you will need to apply the LUT yourself. You can access the lut information for p-th band of the current image by calling current_image_header()->get_lut_info(p, out_n_luts, out_ne_lut, out_lut_data)
• The class does not have built-in support for JPEG2000 compressed NITF files Using cmake though, you can configure VXL to link against Er Mapper's freely available ECW JPEG2000 SDK (http://ermapper.com/downloads/sdks.aspx#16). If you do that, then this class will automatically be able to read NITF files that are JPEG 2000 compressed.

Definition at line 70 of file vil_nitf2_image.h.

Public Member Functions
	vil_nitf2_image (vil_stream *is)
	Instantiate an image resource, but doesn't read anything.
	vil_nitf2_image (const vcl_string &filePath, const char *mode)
virtual	~vil_nitf2_image ()
virtual unsigned	nplanes () const
	return the image info the the current image.
virtual unsigned	ni () const
	Dimensions: Planes x ni x nj.
virtual unsigned	nj () const
	Dimensions: Planes x ni x nj.
virtual enum vil_pixel_format	pixel_format () const
	Pixel Format.
virtual unsigned	size_block_i () const
	Block size in columns.
virtual unsigned	size_block_j () const
	Block size in rows.
virtual unsigned	n_block_i () const
	Number of blocks in image width.
virtual unsigned	n_block_j () const
	Number of blocks in image height.
char const *	file_format () const
	returns "nitf vM.N".
bool	is_jpeg_2000_compressed () const
virtual vil_image_view_base_sptr	get_copy_view_decimated_j2k (unsigned i0, unsigned ni, unsigned j0, unsigned nj, double i_factor, double j_factor) const
virtual vil_image_view_base_sptr	get_copy_view_decimated_j2k (double i_factor, double j_factor) const
virtual vil_image_view_base_sptr	get_copy_view (unsigned i0, unsigned ni, unsigned j0, unsigned nj) const
	Create a read/write view of a copy of this data.
virtual 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 &, unsigned, unsigned)
	Put the data in this view back into the image source.
virtual bool	put_block (unsigned, unsigned, const vil_image_view_base &)
	put the block into the resource at the indicated location.
virtual vil_image_view_base_sptr	get_block (unsigned int blockIndexX, unsigned int blockIndexY) const
virtual bool	get_property (char const *tag, void *property_value=0) const
	Extra property information.
const vcl_vector< vil_nitf2_image_subheader * > &	get_image_headers () const
const vil_nitf2_header &	get_header () const
const vcl_vector< vil_nitf2_des * > &	get_des () const
virtual void	set_current_image (unsigned int index)
	Since the VIL API (eg.
virtual unsigned int	current_image () const
virtual unsigned int	nimages () const
bool	parse_headers ()
vil_nitf2_classification::file_version	file_version () const
virtual vil_nitf2_field::field_tree *	get_tree () const
bool	put_view (const vil_image_view_base &im)
	Put the data in this view back into the image source at the origin.
virtual vil_image_view_base_sptr	get_block (unsigned block_index_i, unsigned block_index_j) const =0
	Block access.
virtual bool	get_blocks (unsigned start_block_i, unsigned end_block_i, unsigned start_block_j, unsigned end_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > &blocks) const
	the multiple blocks are in col row order, i.e. blocks[i][j].
virtual bool	put_blocks (unsigned start_block_i, unsigned end_block_i, unsigned start_block_j, unsigned end_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > const &blocks)
	put multiple blocks in raster order, i.e.
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 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.
Static Public Attributes
static vil_image_view_base_sptr(*	s_decode_jpeg_2000 )(vil_stream *vs, unsigned i0, unsigned ni, unsigned j0, unsigned nj, double i_factor, double j_factor)
	All instances of vil_nitf2_image will use s_decode_jpeg_2000() to decode JPEG 2000 streams if you set the function.
Protected Member Functions
virtual vil_image_view_base_sptr	get_block_j2k (unsigned int blockIndexX, unsigned int blockIndexY) const
virtual vil_image_view_base_sptr	get_copy_view_uncompressed (unsigned i0, unsigned ni, unsigned j0, unsigned nj) const
vil_streampos	get_offset_to (vil_nitf2_header::section_type sec, vil_nitf2_header::portion_type por, unsigned int index=0) const
vil_streampos	size_to (vil_nitf2_header::section_type sec, vil_nitf2_header::portion_type por, int index) const
vil_streampos	get_offset_to_image_data_block_band (unsigned int imageIndex, unsigned int blockIndexX, unsigned int blockIndexY, int bandIndex) const
void	clear_image_headers ()
const vil_nitf2_image_subheader *	current_image_header () const
void	clear_des ()
vil_image_view_base_sptr	fill_block (unsigned i0, unsigned icrop, unsigned j0, unsigned jcrop, vil_image_view_base_sptr &view) const
bool	block_i_offset (unsigned block_i, unsigned i, unsigned &i_offset) const
	Get the offset from the start of the block row for pixel position i.
bool	block_j_offset (unsigned block_j, unsigned j, unsigned &j_offset) const
	Get the offset from the start of the block column for pixel position j.
bool	trim_border_blocks (unsigned i0, unsigned ni, unsigned j0, unsigned nj, unsigned start_block_i, unsigned start_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > &blocks) const
vil_image_view_base_sptr	glue_blocks_together (const vcl_vector< vcl_vector< vil_image_view_base_sptr > > &blocks) const
void	ref ()
void	unref ()
Protected Attributes
vil_nitf2_header	m_file_header
vcl_vector< vil_nitf2_image_subheader * >	m_image_headers
vcl_vector< vil_nitf2_des * >	m_des
vil_stream *	m_stream
unsigned int	m_current_image_index
int	reference_count_
Friends
class	vil_smart_ptr< vil_blocked_image_resource >
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.

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Constructor & Destructor Documentation

vil_nitf2_image::vil_nitf2_image (  vil_stream *  is  )

Instantiate an image resource, but doesn't read anything. You'll want to call parse_headers() before you do anything with me (eg. before you ask for any image data). If that returns false, then I am invalid and useless to you in every way. Definition at line 137 of file vil_nitf2_image.cxx.

vil_nitf2_image::vil_nitf2_image (  const vcl_string &  filePath, const char *  mode )

Definition at line 144 of file vil_nitf2_image.cxx.

vil_nitf2_image::~vil_nitf2_image (   )  [virtual]

Definition at line 172 of file vil_nitf2_image.cxx.

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Member Function Documentation

bool vil_blocked_image_resource::block_i_offset (  unsigned  block_i, unsigned  i, unsigned &  i_offset )  const [protected, inherited]

Get the offset from the start of the block row for pixel position i. Definition at line 136 of file vil_blocked_image_resource.cxx.

bool vil_blocked_image_resource::block_j_offset (  unsigned  block_j, unsigned  j, unsigned &  j_offset )  const [protected, inherited]

Get the offset from the start of the block column for pixel position j. Definition at line 151 of file vil_blocked_image_resource.cxx.

void vil_nitf2_image::clear_des (   )  [protected]

Definition at line 163 of file vil_nitf2_image.cxx.

void vil_nitf2_image::clear_image_headers (   )  [protected]

Definition at line 155 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::current_image (   )  const [virtual]

Definition at line 179 of file vil_nitf2_image.cxx.

const vil_nitf2_image_subheader * vil_nitf2_image::current_image_header (   )  const [protected]

Definition at line 332 of file vil_nitf2_image.cxx.

char const * vil_nitf2_image::file_format (   )  const [virtual]

returns "nitf vM.N". Reimplemented from vil_image_resource. Definition at line 314 of file vil_nitf2_image.cxx.

vil_nitf2_classification::file_version vil_nitf2_image::file_version (   )  const

Definition at line 309 of file vil_nitf2_image.cxx.

vil_image_view_base_sptr vil_blocked_image_resource::fill_block (  unsigned  i0, unsigned  icrop, unsigned  j0, unsigned  jcrop, vil_image_view_base_sptr &  view )  const [protected, inherited]

virtual vil_image_view_base_sptr vil_blocked_image_resource::get_block (  unsigned  block_index_i, unsigned  block_index_j )  const [pure virtual, inherited]

Block access. Implemented in vil_tiff_image, vil_blocked_image_facade, and vil_cached_image_resource.

vil_image_view_base_sptr vil_nitf2_image::get_block (  unsigned int  blockIndexX, unsigned int  blockIndexY )  const [virtual]

Definition at line 633 of file vil_nitf2_image.cxx.

vil_image_view_base_sptr vil_nitf2_image::get_block_j2k (  unsigned int  blockIndexX, unsigned int  blockIndexY )  const [protected, virtual]

Definition at line 616 of file vil_nitf2_image.cxx.

bool vil_blocked_image_resource::get_blocks (  unsigned  start_block_i, unsigned  end_block_i, unsigned  start_block_j, unsigned  end_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > &  blocks )  const [virtual, inherited]

the multiple blocks are in col row order, i.e. blocks[i][j]. Definition at line 37 of file vil_blocked_image_resource.cxx.

virtual vil_image_view_base_sptr vil_nitf2_image::get_copy_view (   )  const [inline, virtual]

Create a read/write view of a copy of all the data. Reimplemented from vil_image_resource. Definition at line 125 of file vil_nitf2_image.h.

vil_image_view_base_sptr vil_nitf2_image::get_copy_view (  unsigned  i0, unsigned  ni, unsigned  j0, unsigned  nj )  const [virtual]

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. Reimplemented from vil_blocked_image_resource. Definition at line 495 of file vil_nitf2_image.cxx.

virtual vil_image_view_base_sptr vil_nitf2_image::get_copy_view_decimated_j2k (  double  i_factor, double  j_factor )  const [inline, virtual]

Definition at line 120 of file vil_nitf2_image.h.

vil_image_view_base_sptr vil_nitf2_image::get_copy_view_decimated_j2k (  unsigned  i0, unsigned  ni, unsigned  j0, unsigned  nj, double  i_factor, double  j_factor )  const [virtual]

Definition at line 472 of file vil_nitf2_image.cxx.

vil_image_view_base_sptr vil_nitf2_image::get_copy_view_uncompressed (  unsigned  i0, unsigned  ni, unsigned  j0, unsigned  nj )  const [protected, virtual]

Definition at line 516 of file vil_nitf2_image.cxx.

const vcl_vector< vil_nitf2_des* >& vil_nitf2_image::get_des (   )  const [inline]

Definition at line 144 of file vil_nitf2_image.h.

const vil_nitf2_header& vil_nitf2_image::get_header (   )  const [inline]

Definition at line 142 of file vil_nitf2_image.h.

const vcl_vector< vil_nitf2_image_subheader* >& vil_nitf2_image::get_image_headers (   )  const [inline]

Definition at line 140 of file vil_nitf2_image.h.

vil_streampos vil_nitf2_image::get_offset_to (  vil_nitf2_header::section_type  sec, vil_nitf2_header::portion_type  por, unsigned int  index = 0 )  const [protected]

Definition at line 59 of file vil_nitf2_image.cxx.

vil_streampos vil_nitf2_image::get_offset_to_image_data_block_band (  unsigned int  imageIndex, unsigned int  blockIndexX, unsigned int  blockIndexY, int  bandIndex )  const [protected]

Definition at line 197 of file vil_nitf2_image.cxx.

bool vil_nitf2_image::get_property (  char const *  tag, void *  property_value = 0 )  const [virtual]

Extra property information. Implements vil_blocked_image_resource. Definition at line 797 of file vil_nitf2_image.cxx.

vil_nitf2_field::field_tree * vil_nitf2_image::get_tree (   )  const [virtual]

Definition at line 823 of file vil_nitf2_image.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.

vil_image_view_base_sptr vil_blocked_image_resource::glue_blocks_together (  const vcl_vector< vcl_vector< vil_image_view_base_sptr > > &  blocks  )  const [protected, inherited]

Definition at line 72 of file vil_blocked_image_resource.cxx.

bool vil_nitf2_image::is_jpeg_2000_compressed (   )  const

Definition at line 462 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::n_block_i (   )  const [virtual]

Number of blocks in image width. Reimplemented from vil_blocked_image_resource. Definition at line 438 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::n_block_j (   )  const [virtual]

Number of blocks in image height. Reimplemented from vil_blocked_image_resource. Definition at line 443 of file vil_nitf2_image.cxx.

unsigned vil_nitf2_image::ni (   )  const [virtual]

Dimensions: Planes x ni x nj. The number of pixels in each row. Implements vil_blocked_image_resource. Definition at line 343 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::nimages (   )  const [virtual]

Definition at line 190 of file vil_nitf2_image.cxx.

unsigned vil_nitf2_image::nj (   )  const [virtual]

Dimensions: Planes x ni x nj. The number of pixels in each column. Implements vil_blocked_image_resource. Definition at line 357 of file vil_nitf2_image.cxx.

unsigned vil_nitf2_image::nplanes (   )  const [virtual]

return the image info the the current image. Implements vil_blocked_image_resource. Definition at line 338 of file vil_nitf2_image.cxx.

bool vil_nitf2_image::parse_headers (   )

Definition at line 275 of file vil_nitf2_image.cxx.

enum vil_pixel_format vil_nitf2_image::pixel_format (   )  const [virtual]

Pixel Format. A standard RGB RGB RGB of chars image has pixel_format() == VIL_PIXEL_FORMAT_BYTE Implements vil_blocked_image_resource. Definition at line 371 of file vil_nitf2_image.cxx.

virtual bool vil_nitf2_image::put_block (  unsigned  , unsigned  , const vil_image_view_base &  )  [inline, virtual]

put the block into the resource at the indicated location. Implements vil_blocked_image_resource. Definition at line 131 of file vil_nitf2_image.h.

bool vil_blocked_image_resource::put_blocks (  unsigned  start_block_i, unsigned  end_block_i, unsigned  start_block_j, unsigned  end_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > const &  blocks )  [virtual, inherited]

put multiple blocks in raster order, i.e. , blocks[i][j]. Definition at line 58 of file vil_blocked_image_resource.cxx.

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.

virtual bool vil_nitf2_image::put_view (  const vil_image_view_base &  , unsigned  , unsigned  )  [inline, virtual]

Put the data in this view back into the image source. The view must be of scalar components. Assign your view to a scalar-component view if this is not the case. Returns: false if failed, because e.g. resource is read-only, format of view is not correct (if it is a compound pixel type, try assigning it to a multi-plane scalar pixel view.) Implements vil_blocked_image_resource. Definition at line 128 of file vil_nitf2_image.h.

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

Definition at line 109 of file vil_image_resource.h.

void vil_nitf2_image::set_current_image (  unsigned int  index  )  [virtual]

Since the VIL API (eg. get_view()) for retrieving image data doesn't support files with multiple images, clients will need to call this function to tell get_view() which image to read in. Overloaded from vil_image_resource. The NITF 2.x file format does support multiple images per file and you can use this API to access each and every one of them. Note: By default, the first image is always used. If you don't call this function at all, then you will only see the first image in a given file. Definition at line 184 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::size_block_i (   )  const [virtual]

Block size in columns. Implements vil_blocked_image_resource. Definition at line 428 of file vil_nitf2_image.cxx.

unsigned int vil_nitf2_image::size_block_j (   )  const [virtual]

Block size in rows. Implements vil_blocked_image_resource. Definition at line 433 of file vil_nitf2_image.cxx.

vil_streampos vil_nitf2_image::size_to (  vil_nitf2_header::section_type  sec, vil_nitf2_header::portion_type  por, int  index )  const [protected]

Definition at line 80 of file vil_nitf2_image.cxx.

bool vil_blocked_image_resource::trim_border_blocks (  unsigned  i0, unsigned  ni, unsigned  j0, unsigned  nj, unsigned  start_block_i, unsigned  start_block_j, vcl_vector< vcl_vector< vil_image_view_base_sptr > > &  blocks )  const [protected, inherited]

Definition at line 168 of file vil_blocked_image_resource.cxx.

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.

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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.

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