/*M/////////////////////////////////////////////////////////////////////////////////////// // // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. // // By downloading, copying, installing or using the software you agree to this license. // If you do not agree to this license, do not download, install, // copy or use the software. // // // License Agreement // For Open Source Computer Vision Library // // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. // Copyright (C) 2009, Willow Garage Inc., all rights reserved. // Third party copyrights are property of their respective owners. // // Redistribution and use in source and binary forms, with or without modification, // are permitted provided that the following conditions are met: // // * Redistribution's of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // // * Redistribution's in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // * The name of the copyright holders may not be used to endorse or promote products // derived from this software without specific prior written permission. // // This software is provided by the copyright holders and contributors "as is" and // any express or implied warranties, including, but not limited to, the implied // warranties of merchantability and fitness for a particular purpose are disclaimed. // In no event shall the Intel Corporation or contributors be liable for any direct, // indirect, incidental, special, exemplary, or consequential damages // (including, but not limited to, procurement of substitute goods or services; // loss of use, data, or profits; or business interruption) however caused // and on any theory of liability, whether in contract, strict liability, // or tort (including negligence or otherwise) arising in any way out of // the use of this software, even if advised of the possibility of such damage. // //M*/ #include "precomp.hpp" #include "grfmt_gdcm.hpp" #ifdef HAVE_GDCM //#define DBG(...) printf(__VA_ARGS__) #define DBG(...) #include <gdcmImageReader.h> static const size_t preamble_skip = 128; static const size_t magic_len = 4; inline cv::String getMagic() { return cv::String("\x44\x49\x43\x4D", 4); } namespace cv { /************************ DICOM decoder *****************************/ DICOMDecoder::DICOMDecoder() { // DICOM preamble is 128 bytes (can have any value, defaults to 0) + 4 bytes magic number (DICM) m_signature = String(preamble_skip, (char)'\x0') + getMagic(); m_buf_supported = false; } bool DICOMDecoder::checkSignature( const String& signature ) const { if (signature.size() >= preamble_skip + magic_len) { if (signature.substr(preamble_skip, magic_len) == getMagic()) { return true; } } DBG("GDCM | Signature does not match\n"); return false; } ImageDecoder DICOMDecoder::newDecoder() const { return makePtr<DICOMDecoder>(); } bool DICOMDecoder::readHeader() { gdcm::ImageReader csImageReader; csImageReader.SetFileName(m_filename.c_str()); if(!csImageReader.Read()) { DBG("GDCM | Failed to open DICOM file\n"); return(false); } const gdcm::Image &csImage = csImageReader.GetImage(); bool bOK = true; switch (csImage.GetPhotometricInterpretation().GetType()) { case gdcm::PhotometricInterpretation::MONOCHROME1: case gdcm::PhotometricInterpretation::MONOCHROME2: { switch (csImage.GetPixelFormat().GetScalarType()) { case gdcm::PixelFormat::INT8: m_type = CV_8SC1; break; case gdcm::PixelFormat::UINT8: m_type = CV_8UC1; break; case gdcm::PixelFormat::INT16: m_type = CV_16SC1; break; case gdcm::PixelFormat::UINT16: m_type = CV_16UC1; break; case gdcm::PixelFormat::INT32: m_type = CV_32SC1; break; case gdcm::PixelFormat::FLOAT32: m_type = CV_32FC1; break; case gdcm::PixelFormat::FLOAT64: m_type = CV_64FC1; break; default: bOK = false; DBG("GDCM | Monochrome scalar type not supported\n"); break; } break; } case gdcm::PhotometricInterpretation::RGB: { switch (csImage.GetPixelFormat().GetScalarType()) { case gdcm::PixelFormat::UINT8: m_type = CV_8UC3; break; default: bOK = false; DBG("GDCM | RGB scalar type not supported\n"); break; } break; } default: { bOK = false; DBG("GDCM | PI not supported: %s\n", csImage.GetPhotometricInterpretation().GetString()); break; } } if(bOK) { unsigned int ndim = csImage.GetNumberOfDimensions(); if (ndim != 2) { DBG("GDCM | Invalid dimensions number: %d\n", ndim); bOK = false; } } if (bOK) { const unsigned int *piDimension = csImage.GetDimensions(); m_height = piDimension[0]; m_width = piDimension[1]; if( ( m_width <=0 ) || ( m_height <=0 ) ) { DBG("GDCM | Invalid dimensions: %d x %d\n", piDimension[0], piDimension[1]); bOK = false; } } return(bOK); } bool DICOMDecoder::readData( Mat& csImage ) { csImage.create(m_width,m_height,m_type); gdcm::ImageReader csImageReader; csImageReader.SetFileName(m_filename.c_str()); if(!csImageReader.Read()) { DBG("GDCM | Failed to Read\n"); return false; } const gdcm::Image &img = csImageReader.GetImage(); unsigned long len = img.GetBufferLength(); if (len > csImage.elemSize() * csImage.total()) { DBG("GDCM | Buffer is bigger than Mat: %ld > %ld * %ld\n", len, csImage.elemSize(), csImage.total()); return false; } if (!img.GetBuffer((char*)csImage.ptr())) { DBG("GDCM | Failed to GetBuffer\n"); return false; } DBG("GDCM | Read OK\n"); return true; } } #endif // HAVE_GDCM