diimage.h

转化为DIB位图再显示出来的dicom文件C++代码

     *
     ** @param  data        untyped pointer memory buffer (set to NULL if not allocated externally)
     *  @param  size        size of the memory buffer in bytes (if 0 'data' is set to NULL)
     *  @param  frame       index of frame to be converted (starting from 0)
     *  @param  bits        number of bits per pixel used for the output bitmap (8, 24 or 32)
     *  @param  upsideDown  specifies the order of lines in the images (0 = top-down, bottom-up otherwise)
     *  @param  padding     align each line to a 32-bit address if true (default)
     *
     ** @return number of bytes allocated by the bitmap, or 0 if an error occured
     */
    virtual unsigned long createDIB(void *&data,
                                    const unsigned long size,
                                    const unsigned long frame,
                                    const int bits,
                                    const int upsideDown,
                                    const int padding = 1) = 0;

    /** create true color (32 bit) bitmap for Java AWT (abstract).
     *
     ** @param  data   resulting pointer to bitmap data (set to NULL if an error occurred)
     *  @param  frame  index of frame to be converted
     *  @param  bits   number of bits per pixel used for the output bitmap (8 or 32)
     *
     ** @return number of bytes allocated by the bitmap, or 0 if an error occured
     */
    virtual unsigned long createAWTBitmap(void *&data,
                                          const unsigned long frame,
                                          const int bits) = 0;

    /** render pixel data of given frame and write image related attributes to DICOM dataset.
     *
     ** @param  dataset  reference to DICOM dataset where the image attributes are stored
     *  @param  frame    index of frame used for output
     *  @param  bits     number of bits used for output of pixel data
     *  @param  planar   flag, whether the output data (for multi-planar images) should be planar or not
     *
     ** @return true if successful, false otherwise
     */
    int writeFrameToDataset(DcmItem &dataset,
                            const unsigned long frame = 0,
                            const int bits = 0,
                            const int planar = 0);

    /** write current image and related attributes to DICOM dataset.
     *
     ** @param  dataset  reference to DICOM dataset where the image attributes are stored
     *  @param  mode     determine value of BitsStored from 'used' or 'possible' pixel values
     *
     ** @return true if successful, false otherwise
     */
    virtual int writeImageToDataset(DcmItem &dataset,
                                    const int mode = 0) = 0;

    /** write pixel data to PPM file (abstract).
     *  pixel data is written in ASCII format.
     *
     ** @param  stream  open C++ output stream
     *  @param  frame   index of frame used for output
     *  @param  bits    number of bits used for output of pixel data
     *
     ** @return true if successful, false otherwise
     */
    virtual int writePPM(ostream &stream,
                         const unsigned long frame,
                         const int bits) = 0;

    /** write pixel data to PPM file (abstract).
     *  pixel data is written in ASCII format.
     *
     ** @param  stream  open C output stream
     *  @param  frame   index of frame used for output
     *  @param  bits    number of bits used for output of pixel data
     *
     ** @return true if successful, false otherwise
     */
    virtual int writePPM(FILE *stream,
                         const unsigned long frame,
                         const int bits) = 0;

    /** write pixel data to raw PPM file (abstract)
     *
     ** @param  stream  open C output stream
     *  @param  frame   index of frame used for output
     *  @param  bits    number of bits used for output of pixel data
     *
     ** @return true if successful, false otherwise
     */
    virtual int writeRawPPM(FILE *stream,
                            const unsigned long frame,
                            const int bits) = 0;

    /** write pixel data to BMP file
     *
     ** @param  stream  open C output stream
     *  @param  frame   index of frame used for output (default: first frame = 0)
     *  @param  bits    number of bits used for output of pixel data (8 or 24)
     *
     ** @return true if successful, false otherwise
     */
    virtual int writeBMP(FILE *stream,
                         const unsigned long frame,
                         const int bits);


 protected:

    /** constructor
     *
     ** @param  docu    pointer to the DICOM document
     *  @param  status  status of the image object
     */
    DiImage(const DiDocument *docu,
            const EI_Status status);

    /** constructor, copy
     *
     ** @param  image   pointer to reference image
     *  @param  fstart  first frame to be processed
     *  @param  fcount  number of frames
     */
    DiImage(const DiImage *image,
            const unsigned long fstart,
            const unsigned long fcount);

    /** constructor, scale/clip
     *
     ** @param  image   pointer to reference image
     *  @param  width   number of columns of the new image
     *  @param  height  number of rows of the new image
     *  @param  aspect  flag indicating whether pixel aspect ratio should be used or not
     */
    DiImage(const DiImage *image,
            const Uint16 width,
            const Uint16 height,
            const int aspect = 0);

    /** constructor, rotate
     *
     ** @param  image   pointer to reference image
     *  @param  degree  angle by which the image shall be rotated
     */
    DiImage(const DiImage *image,
            const int degree = 0);

    /** constructor, createMonoOutput
     *
     ** @param  image   pointer to reference image
     *  @param  frame   number of frame stored in the new image object
     *  @param  stored  number of bits stored
     *  @param  alloc   number of bits allocated
     */
    DiImage(const DiImage *image,
            const unsigned long frame,
            const int stored,
            const int alloc);

    /** delete internally handled object for the input pixel data conversion
     */
    void deleteInputData();

    /** check and possibly correct values for pixel spacing, aspect ratio etc.
     */
    void checkPixelExtension();

    /** create input pixel data representation from DICOM dataset structures
     *
     ** @param  pixel  pointer to DICOM dataset structure storing the pixel data
     *  @param  spp    samples per pixel
     */
    void convertPixelData(/*const*/ DcmPixelData *pixel,
                          const int spp);

    /** update Image Pixel Module attributes in the given dataset.
     *  Removes smallest/largest pixel value and updates pixel aspect ratio as well
     *  as imager/pixel spacing.
     *  Used in writeXXXToDataset() routines.
     *
     ** @param  dataset  reference to DICOM image dataset
     */
    virtual void updateImagePixelModuleAttributes(DcmItem &dataset);

    /** detach pixel data.
     *  removes storage area used for the pixel data from memory
     */
    int detachPixelData();

    /// copy of status variable declared in class 'DicomImage'
    EI_Status ImageStatus;
    /// points to special object, which capsulates the DCMtk/DCMdata
    const DiDocument *Document;

    /// first frame to be processed
    Uint32 FirstFrame;
    /// number of frames in case of multi-frame images (otherwise '1')
    Uint32 NumberOfFrames;
    /// total number of frames stored in the dataset
    Uint32 TotalNumberOfFrames;
    /// number of representative frame, type 3 attribute (default '0')
    Uint32 RepresentativeFrame;
    /// number of rows (in pixel)
    Uint16 Rows;
    /// number of columns (in pixel)
    Uint16 Columns;
    /// width of each pixel according to 'PixelSpacing/AspectRatio'
    double PixelWidth;
    /// height of each pixel according to 'PixelSpacing/AspectRatio'
    double PixelHeight;
    /// number of bits allocated for each pixel
    Uint16 BitsAllocated;
    /// number of bits stored for each pixel (see 'BitsPerSample')
    Uint16 BitsStored;
    /// position of highest stored bit
    Uint16 HighBit;

    /// actual number of bits per sample (depth)
    int BitsPerSample;

    /// polarity (normal or reverse)
    EP_Polarity Polarity;

    /// is 'true' if pixel data is signed
    int hasSignedRepresentation;
    /// is 'true' if attribute 'PixelSpacing' is present
    int hasPixelSpacing;
    /// is 'true' if attribute 'ImagerPixelSpacing' is present
    int hasImagerPixelSpacing;
    /// is 'true' if attribute 'PixelAspectRatio' is present
    int hasPixelAspectRatio;
    /// is 'false' if derived from original image data (e.g. scaled)
    int isOriginal;

    /// points to intermediate pixel representation (template object)
    DiInputPixel *InputData;

 // --- declarations to avoid compiler warnings

    DiImage(const DiImage &);
    DiImage &operator=(const DiImage &);
};


#endif


/*
 *
 * CVS/RCS Log:
 * $Log: diimage.h,v $
 * Revision 1.38  2005/12/08 16:47:42  meichel
 * Changed include path schema for all DCMTK header files
 *
 * Revision 1.37  2005/03/09 17:32:35  joergr
 * Added mode to writeImageToDataset() which allows the value of BitsStored to
 * be determined either from 'used' or from 'possible' pixel values.
 *
 * Revision 1.36  2004/09/22 11:33:14  joergr
 * Introduced new member variable "TotalNumberOfFrames".
 *
 * Revision 1.35  2004/07/20 18:12:16  joergr
 * Added API method to "officially" access the internal intermediate pixel data
 * representation (e.g. to get Hounsfield Units for CT images).
 *
 * Revision 1.34  2004/02/06 11:07:50  joergr
 * Distinguish more clearly between const and non-const access to pixel data.
 *
 * Revision 1.33  2004/01/05 14:52:20  joergr
 * Removed acknowledgements with e-mail addresses from CVS log.
 *
 * Revision 1.32  2003/12/08 18:22:26  joergr
 * Removed leading underscore characters from preprocessor symbols (reserved
 * symbols). Updated CVS header.
 *
 * Revision 1.31  2003/06/12 15:08:34  joergr
 * Fixed inconsistent API documentation reported by Doxygen.
 *
 * Revision 1.30  2003/05/20 09:20:41  joergr
 * Added method returning the number of bytes required to store a single
 * rendered frame: getOutputDataSize().
 *
 * Revision 1.29  2002/12/09 13:32:51  joergr
 * Renamed parameter/local variable to avoid name clashes with global
 * declaration left and/or right (used for as iostream manipulators).
 *
 * Revision 1.28  2002/11/27 14:08:04  meichel
 * Adapted module dcmimgle to use of new header file ofstdinc.h
 *
 * Revision 1.27  2002/11/26 14:48:32  joergr
 * Added Smallest/LargestImagePixelValue to the list of attributes to be
 * removed from a newly created dataset.
 *
 * Revision 1.26  2002/08/02 15:03:20  joergr
 * Enhanced writeFrameToDataset() routine (remove out-data DICOM attributes
 * from the dataset).
 * Added function to write the current image (not only a selected frame) to a
 * DICOM dataset.
 *
 * Revision 1.25  2002/06/26 16:01:55  joergr
 * Added support for polarity flag to color images.
 * Added new method to write a selected frame to a DICOM dataset (incl. required
 * attributes from the "Image Pixel Module").
 *
 * Revision 1.24  2002/04/16 13:53:11  joergr
 * Added configurable support for C++ ANSI standard includes (e.g. streams).
 *
 * Revision 1.23  2002/01/29 17:05:50  joergr
 * Added optional flag to the "Windows DIB" methods allowing to switch off the
 * scanline padding.
 *
 * Revision 1.22  2001/11/27 18:18:22  joergr
 * Added support for plugable output formats in class DicomImage. First
 * implementation is JPEG.
 *
 * Revision 1.21  2001/11/09 16:26:37  joergr
 * Added support for Window BMP file format.
 * Enhanced and renamed createTrueColorDIB() method.
 *
 * Revision 1.20  2001/06/20 15:12:49  joergr
 * Enhanced multi-frame support for command line tool 'dcm2pnm': extract all
 * or a range of frames with one call.
 *
 * Revision 1.19  2001/06/01 15:49:42  meichel
 * Updated copyright header
 *
 * Revision 1.18  2000/03/08 16:24:16  meichel
 * Updated copyright header.
 *
 * Revision 1.17  2000/02/02 11:02:38  joergr
 * Removed space characters before preprocessor directives.
 *
 * Revision 1.16  1999/10/06 13:28:21  joergr
 * Corrected creation of PrintBitmap pixel data: VOI windows should be applied
 * before clipping to avoid that the region outside the image (border) is also
 * windowed (this requires a new method in dcmimgle to create a DicomImage
 * with the grayscale transformations already applied).
 *
 * Revision 1.15  1999/09/17 12:12:18  joergr
 * Added/changed/completed DOC++ style comments in the header files.
 *
 * Revision 1.14  1999/08/25 16:39:31  joergr
 * Allow clipping region to be outside the image (overlapping).
 *
 * Revision 1.13  1999/07/23 13:53:00  joergr
 * Added support for attribute 'ImagerPixelSpacing'.
 * Added support for attribute 'RepresentativeFrameNumber'.
 * Added methods to set 'PixelAspectRatio'.
 *
 * Revision 1.12  1999/04/28 14:47:34  joergr
 * Added experimental support to create grayscale images with more than 256
 * shades of gray to be displayed on a consumer monitor (use pastel colors).
 *
 * Revision 1.11  1999/03/24 17:20:01  joergr
 * Added/Modified comments and formatting.
 *
 * Revision 1.10  1999/02/08 12:38:12  joergr
 * Added parameter 'idx' to some overlay methods to distinguish between
 * built-in and additional overlay planes.
 *
 * Revision 1.9  1999/02/03 17:01:45  joergr
 * Added BEGIN_EXTERN_C and END_EXTERN_C to some C includes.
 *
 * Revision 1.8  1999/01/20 14:59:37  joergr
 * Added new output method to fill external memory buffer with rendered pixel
 * data.
 *
 * Revision 1.7  1999/01/11 09:32:32  joergr
 * Removed method 'getMinMaxValues()' in class 'DicomImage'.
 *
 * Revision 1.6  1998/12/23 11:33:08  joergr
 * Corrected some typos and formatting.
 *
 * Revision 1.5  1998/12/22 14:03:53  joergr
 * Changed parameter declaration to avoid compiler warnings (hide parameter
 * name).
 *
 * Revision 1.4  1998/12/16 16:29:04  joergr
 * Removed several methods used for monochrome images only in base class
 * 'DiImage'. Introduced mechanism to use the methods directly.
 *
 * Revision 1.3  1998/12/14 17:17:29  joergr
 * Added methods to add and remove additional overlay planes (still untested).
 *
 * Revision 1.2  1998/11/30 12:24:07  joergr
 * Added const type qualifier to some parameters to avoid errors with MSVC5
 * (couldn't create instance of abstract class).
 *
 * Revision 1.1  1998/11/27 15:06:08  joergr
 * Added copyright message.
 * Added methods and constructors for flipping and rotating, changed for
 * scaling and clipping.
 * Added method to directly create java AWT bitmaps.
 * Renamed variable 'Status' to 'ImageStatus' because of possible conflicts
 * with X windows systems.
 * Added method to detach pixel data if it is no longer needed.
 * Added methods to support presentation LUTs and shapes.
 *
 * Revision 1.6  1998/07/01 08:39:21  joergr
 * Minor changes to avoid compiler warnings (gcc 2.8.1 with additional
 * options), e.g. add copy constructors.
 *
 * Revision 1.5  1998/05/11 14:53:16  joergr
 * Added CVS/RCS header to each file.
 *
 *
 */