nb = atoi(str_nb.c_str() );
if (nb == 12) nb =16;
}
- lgrTotale = GetXSize() * GetYSize() * GetZSize()
+ lgrTotale = lgrTotaleRaw = GetXSize() * GetYSize() * GetZSize()
* (nb/8)* GetSamplesPerPixel();
std::string str_PhotometricInterpretation =
gdcmHeader::GetPubElValByNumber(0x0028,0x0004);
- if ( str_PhotometricInterpretation == "PALETTE COLOR " ) {
+
+ /*if ( str_PhotometricInterpretation == "PALETTE COLOR " )*/
+ // pb when undealt Segmented Palette Color
+
+ if (HasLUT()) {
lgrTotale*=3;
}
}
// 0028|1203 [US] [Blue Palette Color Lookup Table Data]
+/////////////////////////////////////////////////////////////////
+/**
+ * \ingroup gdcmFile
+ * \brief Returns the size (in bytes) of required memory to hold
+ * \ the pixel data represented in this file, when user DOESN'T want
+ * \ to get RGB pixels image when it's stored as a PALETTE COLOR image
+ * \ - the (vtk) user is supposed to know how deal with LUTs -
+ * \ warning to be used with GetImagePixelsRaw()
+ * @return The size of pixel data in bytes.
+ */
+
+size_t gdcmFile::GetImageDataSizeRaw(void) {
+ return (lgrTotaleRaw);
+}
+
/////////////////////////////////////////////////////////////////
/**
* \ingroup gdcmFile
* \ingroup gdcmFile
* \brief Allocates necessary memory, copies the pixel data
* (image[s]/volume[s]) to newly allocated zone.
+ * Transforms YBR pixels into RGB pixels if any
+ Transforms 3 planes R, G, B into a single RGB Plane
+ Transforms single Grey plane + 3 Palettes into a RGB Plane
* @return Pointer to newly allocated pixel data.
* \ NULL if alloc fails
*/
return(PixelData);
}
+/**
+ * \ingroup gdcmFile
+ * \brief Allocates necessary memory, copies the pixel data
+ * (image[s]/volume[s]) to newly allocated zone.
+ * Transforms YBR pixels into RGB pixels if any
+ Transforms 3 planes R, G, B into a single RGB Plane
+ DOES NOT transform Grey plane + 3 Palettes into a RGB Plane
+ * @return Pointer to newly allocated pixel data.
+ * \ NULL if alloc fails
+ */
+void * gdcmFile::GetImageDataRaw (void) {
+ if (HasLUT())
+ lgrTotale /= 3; // TODO Let gdcmHeadar user a chance
+ // to get the right value
+ // Create a member lgrTotaleRaw ???
+ PixelData = (void *) malloc(lgrTotale);
+ if (PixelData)
+ GetImageDataIntoVectorRaw(PixelData, lgrTotale);
+ return(PixelData);
+}
+
/**
* \ingroup gdcmFile
* \brief Copies at most MaxSize bytes of pixel data to caller's
* \warning This function was designed to avoid people that want to build
* a volume from an image stack to need first to get the image pixels
* and then move them to the volume area.
- * It's absolutely useless for VTK users since vtk chooses
+ * It's absolutely useless for any VTK user since vtk chooses
* to invert the lines of an image, that is the last line comes first
* (for some axis related reasons?). Hence he will have
* to load the image line by line, starting from the end.
- * VTK users hace to call GetImageData
+ * VTK users have to call GetImageData
*
* @param destination Address (in caller's memory space) at which the
* pixel data should be copied
size_t gdcmFile::GetImageDataIntoVector (void* destination, size_t MaxSize) {
+ size_t l = GetImageDataIntoVectorRaw (destination, MaxSize);
+
+ if (!HasLUT())
+ return lgrTotale;
+
+ // from Lut R + Lut G + Lut B
+
+ unsigned char * newDest = (unsigned char *)malloc(lgrTotale);
+ unsigned char * a = (unsigned char *)destination;
+ unsigned char * lutRGBA = (unsigned char *)GetLUTRGBA();
+ if (lutRGBA) {
+ int l = lgrTotaleRaw;
+ memmove(newDest, destination, l);// move Gray pixels to temp area
+ int j;
+ for (int i=0;i<l; i++) { // Build RGB Pixels
+ j=newDest[i]*4;
+ *a++ = lutRGBA[j];
+ *a++ = lutRGBA[j+1];
+ *a++ = lutRGBA[j+2];
+ }
+ free(newDest);
+
+ // now, it's an RGB image
+ // Lets's write it in the Header
+
+ // CreateOrReplaceIfExist ?
+
+ std::string spp = "3"; // Samples Per Pixel
+ gdcmHeader::SetPubElValByNumber(spp,0x0028,0x0002);
+ std::string rgb= "RGB "; // Photometric Interpretation
+ gdcmHeader::SetPubElValByNumber(rgb,0x0028,0x0004);
+ std::string planConfig = "0"; // Planar Configuration
+ gdcmHeader::SetPubElValByNumber(planConfig,0x0028,0x0006);
+
+
+ } else {
+ // need to make RGB Pixels (?)
+ // from grey Pixels (?!)
+ // and Gray Lut (!?!)
+ // or Segmented xxx Palette Color Lookup Table Data and so on
+
+ // Well . I'll wait till I find such an image
+
+ // Oops! I get one (gdcm-US-ALOKA-16.dcm)
+ // No idea how to manage it
+ // It seems that *no Dicom Viewer* has any idea :-(
+ // Segmented xxx Palette Color are *more* than 65535 long ?!?
+
+ std::string rgb= "MONOCHROME1 "; // Photometric Interpretation
+ gdcmHeader::SetPubElValByNumber(rgb,0x0028,0x0004);
+
+ }
+
+ // TODO : Drop Palette Color out of the Header?
+ return lgrTotale;
+}
+
+
+
+/**
+ * \ingroup gdcmFile
+ * \brief Copies at most MaxSize bytes of pixel data to caller's
+ * memory space.
+ * \warning This function was designed to avoid people that want to build
+ * a volume from an image stack to need first to get the image pixels
+ * and then move them to the volume area.
+ * It's absolutely useless for any VTK user since vtk chooses
+ * to invert the lines of an image, that is the last line comes first
+ * (for some axis related reasons?). Hence he will have
+ * to load the image line by line, starting from the end.
+ * VTK users hace to call GetImageData
+ * \warning DOES NOT transform the Grey Plane + Palette Color (if any)
+ * into a single RGB Pixels Plane
+ * the (VTK) user will manage the palettes
+ *
+ * @param destination Address (in caller's memory space) at which the
+ * pixel data should be copied
+ * @param MaxSize Maximum number of bytes to be copied. When MaxSize
+ * is not sufficient to hold the pixel data the copy is not
+ * executed (i.e. no partial copy).
+ * @return On success, the number of bytes actually copied. Zero on
+ * failure e.g. MaxSize is lower than necessary.
+ */
+
+size_t gdcmFile::GetImageDataIntoVectorRaw (void* destination, size_t MaxSize) {
+
int nb, nbu, highBit, signe;
std::string str_nbFrames, str_nb, str_nbu, str_highBit, str_signe;
if (str_PhotometricInterpretation == "YBR_FULL") {
// Warning : YBR_FULL_422 acts as RGB
- // need to make RGB Pixels from Planes Y,cB,cR
+ // : we need to make RGB Pixels from Planes Y,cB,cR
// see http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf
// for code optimisation
-
+
+ // to see the tricks about YBR_FULL, YBR_FULL_422,
+ // YBR_PARTIAL_422, YBR_ICT, YBR_RCT have a look at :
+ // ftp://medical.nema.org/medical/dicom/final/sup61_ft.pdf
+ // and be *very* affraid
+ //
int l = GetXSize()*GetYSize();
int nbFrames = GetZSize();
} else {
- // need to make RGB Pixels from Planes R,G,B
+ // need to make RGB Pixels from R,G,B Planes
// (all the Frames at a time)
int l = GetXSize()*GetYSize()*GetZSize();
}
case 2:
- // from Lut R + Lut G + Lut B
-
- {
- unsigned char * newDest = (unsigned char *)malloc(lgrTotale);
- unsigned char * a = (unsigned char *)destination;
-
- unsigned char * lutRGBA = (unsigned char *) GetLUTRGBA();
- if (lutRGBA) {
-
- int l = lgrTotale/3;
- memmove(newDest, destination, l);// move Gray pixels to temp area
- int j;
- for (int i=0;i<l; i++) { // Build RGB Pixels
- j=newDest[i]*4;
- *a++ = lutRGBA[j];
- *a++ = lutRGBA[j+1];
- *a++ = lutRGBA[j+2];
- }
- free(newDest);
-
- } else {
- // need to make RGB Pixels (?)
- // from grey Pixels (?!)
- // and Gray Lut (!?!)
- // or Segmented Green Palette Color Lookup Table Data and so on
-
- // Well . I'll wait till I find such an image
-
- // Oops! I get one (gdcm-US-ALOKA-16.dcm)
- // No idea how to manage it
- // It seems that *no Dicom Viewer* has any idea :-(
- // Segmented xxx Palette Color are *more* than 65535 long ?!?
-
- // WARNING : quick and dirty trick to produce
- // a single plane Grey image
- // See also gdcmHeaderHelper::GetNumberOfScalarComponents()
- lgrTotale /=3;
- return lgrTotale;
- // end of dirty trick
- }
- break;
- }
+ // Palettes were found
+ // Let the user deal with them !
+ return lgrTotale;
}
// now, it's an RGB image
// Lets's write it in the Header
// CreateOrReplaceIfExist ?
+
+
std::string spp = "3"; // Samples Per Pixel
gdcmHeader::SetPubElValByNumber(spp,0x0028,0x0002);
- std::string rgb="RGB "; // Photometric Interpretation
+ std::string rgb="RGB "; // Photometric Interpretation
gdcmHeader::SetPubElValByNumber(rgb,0x0028,0x0004);
+
std::string planConfig = "0"; // Planar Configuration
gdcmHeader::SetPubElValByNumber(planConfig,0x0028,0x0006);
}
+
/**
* \ingroup gdcmFile
* \brief Swap the bytes, according to swap code.
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff