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Import/export of the TIFF format | ![]() |
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Functions | |
template<...> void | importTiffImage (TiffImage *tiff, ImageIterator iter, Accessor a) |
Convert given TiffImage into image specified by iterator range. | |
template<...> void | tiffToScalarImage (TiffImage *tiff, ImageIterator iter, Accessor a) |
Convert single-band TiffImage to scalar image. | |
template<...> void | tiffToRGBImage (TiffImage *tiff, RGBImageIterator iter, RGBAccessor a) |
Convert RGB (3-band or color-mapped) TiffImage to RGB image. | |
template<...> void | createTiffImage (ImageIterator upperleft, ImageIterator lowerright, Accessor a, TiffImage *tiff) |
Create a TiffImage from the given iterator range. | |
template<...> void | createScalarTiffImage (ImageIterator upperleft, ImageIterator lowerright, Accessor a, TiffImage *tiff) |
Create a single-band TiffImage from the given scalar image. | |
template<...> void | createRGBTiffImage (RGBImageIterator upperleft, RGBImageIterator lowerright, RGBAccessor a, TiffImage *tiff) |
Create a 3-band TiffImage from the given RGB image. |
Detailed Description |
Normally, you need not call the TIFF functions directly. They are available much more conveniently via importImage() and exportImage()
TIFF (Tagged Image File Format) is a very versatile image format - one can store different pixel types (byte, integer, float, double) and color models (black and white, RGB, mapped RGB, other color systems). For more details and information on how to create a TIFF image, refer to the TIFF documentation at http://www.libtiff.org/ for details.
void createRGBTiffImage (...) |
Create a 3-band TiffImage from the given RGB image. Type and size of the TiffImage are determined by the input image (may be one of unsigned char, int, float, or double). This function uses RGBAccessor to read the data. A RGBImageIterator is an iterator that is associated with a RGBAccessor. Declarations: pass arguments explicitly: namespace vigra { template <class RGBImageIterator, class RGBAccessor> TiffImage * createRGBTiffImage(RGBImageIterator upperleft, RGBImageIterator lowerright, RGBAccessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class RGBImageIterator, class RGBAccessor> inline TiffImage * createRGBTiffImage(triple<RGBImageIterator, RGBImageIterator, RGBAccessor> src) } Usage: #include "vigra/tiff.hxx"
vigra::BRGBImage img(width, height); ... TiffImage * tiff = TIFFOpen(("tiffimage.tiff", "w"); vigra::createRGBTiffImage(srcImageRange(img), tiff); TIFFClose(tiff); // implicitly writes the image to the disk Required Interface:
ImageIterator upperleft; RGBAccessor accessor; accessor.red(upperleft); // result written into TiffImage accessor.green(upperleft); // result written into TiffImage accessor.blue(upperleft); // result written into TiffImage |
void createScalarTiffImage (...) |
Create a single-band TiffImage from the given scalar image. Type and size of the TiffImage are determined by the input image (may be one of unsigned char, short, int, float, or double). This function uses accessors to read the data. Declarations: pass arguments explicitly: namespace vigra { template <class ImageIterator, class Accessor> inline TiffImage * createScalarTiffImage(ImageIterator upperleft, ImageIterator lowerright, Accessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class ImageIterator, class Accessor> inline TiffImage * createScalarTiffImage(triple<ImageIterator, ImageIterator, Accessor> src) } Usage: #include "vigra/tiff.hxx"
vigra::BImage img(width, height); ... TiffImage * tiff = TIFFOpen(("tiffimage.tiff", "w"); vigra::createScalarTiffImage(srcImageRange(img), tiff); TIFFClose(tiff); // implicitly writes the image to the disk Required Interface:
ImageIterator upperleft;
Accessor accessor;
accessor(upperleft); // result written into TiffImage
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void createTiffImage (...) |
Create a TiffImage from the given iterator range. Type and size of the TiffImage are determined by the input image. Currently, the function can create scalar images and RGB images of type unsigned char, short, int, float, and double. This function uses accessors to read the data. Declarations: pass arguments explicitly: namespace vigra { template <class ImageIterator, class Accessor> inline TiffImage * createTiffImage(ImageIterator upperleft, ImageIterator lowerright, Accessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class ImageIterator, class Accessor> inline TiffImage * createTiffImage(triple<ImageIterator, ImageIterator, Accessor> src) } Usage: #include "vigra/tiff.hxx"
vigra::BImage img(width, height); ... TiffImage * tiff = TIFFOpen(("tiffimage.tiff", "w"); vigra::createTiffImage(srcImageRange(img), tiff); TIFFClose(tiff); // implicitly writes the image to the disk Required Interface:
ImageIterator upperleft;
Accessor accessor;
accessor(upperleft); // result written into TiffImage
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void importTiffImage (...) |
Convert given TiffImage into image specified by iterator range. Accessors are used to write the data. This function calls tiffToScalarImage() or tiffToRGBImage(), depending on the accessor's value_type. Declarations: pass arguments explicitly: namespace vigra { template <class ImageIterator, class Accessor> void importTiffImage(TiffImage * tiff, ImageIterator iter, Accessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class ImageIterator, class Accessor> void importTiffImage(TiffImage * tiff, pair<ImageIterator, Accessor> dest) } Usage: #include "vigra/tiff.hxx"
uint32 w, h; TiffImage * tiff = TIFFOpen("tiffimage.tiff", "r"); TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w); TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h); vigra::BImage img(w,h); vigra::importTiffImage(tiff, destImage(img)); TIFFClose(tiff); Required Interface: see tiffToScalarImage() and tiffToRGBImage() Preconditions: see tiffToScalarImage() and tiffToRGBImage() |
void tiffToRGBImage (...) |
Convert RGB (3-band or color-mapped) TiffImage to RGB image. This function uses RGBAccessor to write the data. A RGBImageIterator is an iterator which is associated with a RGBAccessor. Declarations: pass arguments explicitly: namespace vigra { template <class RGBImageIterator, class RGBAccessor> void tiffToRGBImage(TiffImage * tiff, RGBImageIterator iter, RGBAccessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class RGBImageIterator, class RGBAccessor> void tiffToRGBImage(TiffImage * tiff, pair<RGBImageIterator, RGBAccessor> dest) } Usage: #include "vigra/tiff.hxx"
uint32 w, h; uint16 photometric TiffImage * tiff = TIFFOpen("tiffimage.tiff", "r"); TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w); TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h); TIFFGetField(tiff_, TIFFTAG_PHOTOMETRIC, &photometric); if(photometric != PHOTOMETRIC_RGB && photometric != PHOTOMETRIC_PALETTE) { // not an RGB image - handle error } vigra::BRGBImage img(w, h); vigra::tiffToRGBImage(tiff, destImage(img)); TIFFClose(tiff); Required Interface:
ImageIterator upperleft; <unsigned char, short, long, float, double> rvalue, gvalue, bvalue; RGBAccessor accessor; accessor.setRed(rvalue, upperleft); accessor.setGreen(gvalue, upperleft); accessor.setBlue(bvalue, upperleft); Preconditions: ImageIterator must refer to a large enough image.
uint16 sampleFormat, samplesPerPixel, bitsPerSample, photometric;
TIFFGetField(tiff, TIFFTAG_SAMPLEFORMAT, &sampleFormat);
TIFFGetField(tiff, TIFFTAG_SAMPLESPERPIXEL, &samplesPerPixel);
TIFFGetField(tiff, TIFFTAG_BITSPERSAMPLE, &bitsPerSample);
TIFFGetField(tiff, TIFFTAG_PHOTOMETRIC, &photometric);
sampleFormat != SAMPLEFORMAT_VOID
samplesPerPixel == 3 // unlass photometric == PHOTOMETRIC_PALETTE
photometric == PHOTOMETRIC_RGB ||
photometric == PHOTOMETRIC_PALETTE
bitsPerSample == 1 ||
bitsPerSample == 8 ||
bitsPerSample == 16 ||
bitsPerSample == 32 ||
bitsPerSample == 64
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void tiffToScalarImage (...) |
Convert single-band TiffImage to scalar image. This function uses accessors to write the data. Declarations: pass arguments explicitly: namespace vigra { template <class ImageIterator, class Accessor> void tiffToScalarImage(TiffImage * tiff, ImageIterator iter, Accessor a) } use argument objects in conjunction with Argument Object Factories: namespace vigra { template <class ImageIterator, class Accessor> void tiffToScalarImage(TiffImage * tiff, pair<ImageIterator, Accessor> dest) } Usage: #include "vigra/tiff.hxx"
uint32 w, h; uint16 photometric TiffImage * tiff = TIFFOpen("tiffimage.tiff", "r"); TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &w); TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &h); TIFFGetField(tiff_, TIFFTAG_PHOTOMETRIC, &photometric); if(photometric != PHOTOMETRIC_MINISWHITE && photometric != PHOTOMETRIC_MINISBLACK) { // not a scalar image - handle error } vigra::BImage img(w,h); vigra::tiffToScalarImage(tiff, destImage(img)); TIFFClose(tiff); Required Interface:
ImageIterator upperleft; <unsigned char, short, long, float, double> value; Accessor accessor; accessor.set(value, upperleft); Preconditions: ImageIterator must refer to a large enough image.
uint16 sampleFormat, samplesPerPixel, bitsPerSample, photometric; TIFFGetField(tiff, TIFFTAG_SAMPLEFORMAT, &sampleFormat); TIFFGetField(tiff, TIFFTAG_SAMPLESPERPIXEL, &samplesPerPixel); TIFFGetField(tiff, TIFFTAG_BITSPERSAMPLE, &bitsPerSample); TIFFGetField(tiff, TIFFTAG_PHOTOMETRIC, &photometric); sampleFormat != SAMPLEFORMAT_VOID samplesPerPixel == 1 photometric == PHOTOMETRIC_MINISWHITE || photometric == PHOTOMETRIC_MINISBLACK bitsPerSample == 1 || bitsPerSample == 8 || bitsPerSample == 16 || bitsPerSample == 32 || bitsPerSample == 64 |
© Ullrich Köthe (koethe@informatik.uni-hamburg.de) |
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