TrizTech/ohif-viewer
17
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

wadors :: retrieveMetadata :: palette colors

Browse Source
This commit is contained in:
Leonardo Campos committed 2017-03-15 15:47:27 -03:00
1 parent cb72bd17fc
commit 74b99cb28d
2 files changed
+49 -15
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

Packages/ohif-study-list/server/services/wado/retrieveMetadata.js
+32 -11
View File
@@ -97,6 +97,22 @@ function getSourceImageInstanceUid(instance) {
}
}
function getPaletteColor(server, instance, tag, lutDescriptor) {
const lut = [];
const numLutEntries = lutDescriptor[0];
const bits = lutDescriptor[2];
const data = DICOMWeb.getBulkData(instance[tag].BulkDataURI, server.requestOptions);
for (var i = 0; i < numLutEntries; i++) {
if(bits === 16) {
lut[i] = data.readUInt16LE(i*2);
} else {
lut[i] = data.readUInt8(i);
}
}
return lut;
}
/**
* Fetch palette colors for instances with "PALETTE COLOR" photometricInterpretation.
@@ -105,7 +121,7 @@ function getSourceImageInstanceUid(instance) {
* @param instance {Object} The retrieved instance metadata;
* @returns {String} The ReferenceSOPInstanceUID
*/
function getPaletteColors(server, instance) {
function getPaletteColors(server, instance, lutDescriptor) {
let entry = null,
paletteUID = DICOMWeb.getString(instance['00281199']);
@@ -120,9 +136,10 @@ function getPaletteColors(server, instance) {
// no entry on cache... Fetch remote data.
try {
let r, g, b;
r = DICOMWeb.getBulkData(instance['00281201'].BulkDataURI, server.requestOptions);
g = DICOMWeb.getBulkData(instance['00281202'].BulkDataURI, server.requestOptions);
b = DICOMWeb.getBulkData(instance['00281203'].BulkDataURI, server.requestOptions);
r = getPaletteColor(server, instance, '00281201', lutDescriptor);
g = getPaletteColor(server, instance, '00281202', lutDescriptor);;
b = getPaletteColor(server, instance, '00281203', lutDescriptor);;
entry = { red: r, green: g, blue: b };
if (paletteUID !== null) {
// when paletteUID is present, the entry can be cached...
@@ -261,17 +278,21 @@ function resultDataToStudyMetadata(server, studyInstanceUid, resultData) {
// Get additional information if the instance uses "PALETTE COLOR" photometric interpretation
if (instanceSummary.photometricInterpretation === 'PALETTE COLOR') {
let palettes = getPaletteColors(server, instance);
const redPaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281101']));
const greenPaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281102']));
const bluePaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281103']));
const palettes = getPaletteColors(server, instance, redPaletteColorLookupTableDescriptor);
if (palettes) {
if (palettes.uid) {
instanceSummary.paletteColorLookupTableUID = palettes.uid;
}
instanceSummary.redPaletteColorLookupTable = palettes.red;
instanceSummary.greenPaletteColorLookupTable = palettes.green;
instanceSummary.bluePaletteColorLookupTable = palettes.blue;
instanceSummary.redPaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281101']));
instanceSummary.greenPaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281102']));
instanceSummary.bluePaletteColorLookupTableDescriptor = parseFloatArray(DICOMWeb.getString(instance['00281103']));
instanceSummary.redPaletteColorLookupTableData = palettes.red;
instanceSummary.greenPaletteColorLookupTableData = palettes.green;
instanceSummary.bluePaletteColorLookupTableData = palettes.blue;
instanceSummary.redPaletteColorLookupTableDescriptor = redPaletteColorLookupTableDescriptor;
instanceSummary.greenPaletteColorLookupTableDescriptor = greenPaletteColorLookupTableDescriptor;
instanceSummary.bluePaletteColorLookupTableDescriptor = bluePaletteColorLookupTableDescriptor;
}
}