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DCMTK Version 3.6.9
OFFIS DICOM Toolkit
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singleton class that registers encoders for all supported JPEG processes. More...
Static Public Member Functions | |
| static void | registerCodecs (E_CompressionColorSpaceConversion pCompressionCSConversion=ECC_lossyYCbCr, E_UIDCreation pCreateSOPInstanceUID=EUC_default, OFBool pOptimizeHuffman=OFFalse, int pSmoothingFactor=0, int pForcedBitDepth=0, Uint32 pFragmentSize=0, OFBool pCreateOffsetTable=OFTrue, E_SubSampling pSampleFactors=ESS_422, OFBool pWriteYBR422=OFTrue, OFBool pConvertToSC=OFFalse, unsigned long pWindowType=0, unsigned long pWindowParameter=0, double pVoiCenter=0.0, double pVoiWidth=0.0, unsigned long pRoiLeft=0, unsigned long pRoiTop=0, unsigned long pRoiWidth=0, unsigned long pRoiHeight=0, OFBool pUsePixelValues=OFTrue, OFBool pUseModalityRescale=OFFalse, OFBool pAcceptWrongPaletteTags=OFFalse, OFBool pAcrNemaCompatibility=OFFalse, OFBool pRealLossless=OFTrue) |
| registers encoders for all supported JPEG processes. | |
| static void | cleanup () |
| deregisters encoders. | |
Static Private Attributes | |
| static OFBool | registered |
| flag indicating whether the encoders are already registered. | |
| static DJCodecParameter * | cp |
| pointer to codec parameter shared by all encoders | |
| static DJEncoderBaseline * | encbas |
| pointer to encoder for baseline JPEG | |
| static DJEncoderExtended * | encext |
| pointer to encoder for extended JPEG | |
| static DJEncoderSpectralSelection * | encsps |
| pointer to encoder for spectral selection JPEG | |
| static DJEncoderProgressive * | encpro |
| pointer to encoder for progressive JPEG | |
| static DJEncoderP14SV1 * | encsv1 |
| pointer to encoder for lossless SV1 JPEG | |
| static DJEncoderLossless * | enclol |
| pointer to encoder for lossless JPEG | |
singleton class that registers encoders for all supported JPEG processes.
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static |
deregisters encoders.
Attention: Must not be called while other threads might still use the registered codecs, e.g. because they are currently encoding DICOM data sets through dcmdata.
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static |
registers encoders for all supported JPEG processes.
If already registered, call is ignored unless cleanup() has been performed before.
| pCompressionCSConversion | color conversion mode for compression |
| pCreateSOPInstanceUID | mode for SOP Instance UID creation |
| pOptimizeHuffman | perform huffman table optimization for 8 bits/pixel compression? |
| pSmoothingFactor | smoothing factor for image compression, 0..100 |
| pForcedBitDepth | forced bit depth for image compression, 0 (auto) or 8/12/16 |
| pFragmentSize | maximum fragment size (in kbytes) for compression, 0 for unlimited. |
| pCreateOffsetTable | create offset table during image compression? |
| pSampleFactors | subsampling mode for lossy YCbCr color image compression |
| pWriteYBR422 | flag indicating whether a compressed YBR color stream should be marked as YBR_FULL_422 (if true) or YBR_FULL (if false) on DICOM level |
| pConvertToSC | flag indicating whether image should be converted to Secondary Capture upon compression |
| pWindowType | mode for VOI transformation of monochrome images |
| pWindowParameter | parameter for VOI transform of monochrome images, used in modes 1, 2, 4, 6 |
| pVoiCenter | VOI window center for mode 5 |
| pVoiWidth | VOI window width for mode 5 |
| pRoiLeft | Region of Interest left corner for for VOI transform of monochrome images, mode 7 |
| pRoiTop | Region of Interest upper corner for for VOI transform of monochrome images, mode 7 |
| pRoiWidth | Region of Interest width for for VOI transform of monochrome images, mode 7 |
| pRoiHeight | Region of Interest height for for VOI transform of monochrome images, mode 7 |
| pUsePixelValues | Check smallest and largest pixel value and optimize compression, mode 0 only |
| pUseModalityRescale | Create Rescale Slope/Intercept to scale back to original pixel range, mode 0 only |
| pAcceptWrongPaletteTags | Accept wrong palette attribute tags (only "pseudo lossless" encoder) |
| pAcrNemaCompatibility | Accept old ACR-NEMA images without photometric interpretation (only "pseudo lossless" encoder) |
| pRealLossless | Enables true lossless compression (replaces old "pseudo" lossless encoders) |
References ECC_lossyYCbCr, ESS_422, and EUC_default.