TrizTech/ohif-viewer
15
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cornerstoneWADOImageLoader (PR #65, #68)

Browse Source 
Pull Request
https://github.com/chafey/cornerstoneWADOImageLoader/pull/65
https://github.com/chafey/cornerstoneWADOImageLoader/pull/68
This commit is contained in:
Leonardo Campos 2017-02-20 19:47:23 -03:00
parent 74b99cb28d
commit 3d99821117
1 changed files with 50 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
Packages/ohif-cornerstone/client/cornerstoneWADOImageLoader.js
View File

@ -323,7 +323,7 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
}
else if(imageFrame.photometricInterpretation === "YBR_FULL" )
{
convertYBRFull(imageFrame, rgbaBuffer);
convertRGB(imageFrame, rgbaBuffer);
}
else
{
@ -352,11 +352,6 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
sopClassUid !== '1.2.840.10008.5.1.4.1.1.12.2.1 '; // XRF
}
function getSizeInBytes(imageFrame) {
var bytesPerPixel = Math.round(imageFrame.bitsAllocated / 8);
return imageFrame.rows * imageFrame.columns * bytesPerPixel * imageFrame.samplesPerPixel;
}
/**
* Helper function to set pixel data to the right typed array. This is needed because web workers
* can transfer array buffers but not typed arrays
@ -378,18 +373,36 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
var deferred = $.Deferred();
var imageFrame = cornerstoneWADOImageLoader.getImageFrame(imageId);
var decodePromise = cornerstoneWADOImageLoader.decodeImageFrame(imageFrame, transferSyntax, pixelData, canvas, options);
decodePromise.then(function(imageFrame) {
setPixelDataType(imageFrame);
decodePromise.then(function(imageFrame) {
//var imagePixelModule = metaDataProvider('imagePixelModule', imageId);
var imagePlaneModule = cornerstone.metaData.get('imagePlaneModule', imageId);
var voiLutModule = cornerstone.metaData.get('voiLutModule', imageId);
var modalityLutModule = cornerstone.metaData.get('modalityLutModule', imageId);
var sopCommonModule = cornerstone.metaData.get('sopCommonModule', imageId);
var isColorImage = cornerstoneWADOImageLoader.isColorImage(imageFrame.photometricInterpretation);
// JPEGBaseline (8 bits) is already returning the pixel data in the right format (rgba)
// because it's using a canvas to load and decode images.
if(!cornerstoneWADOImageLoader.isJPEGBaseline8Bit(imageFrame, transferSyntax)) {
setPixelDataType(imageFrame);
// convert color space
if(isColorImage) {
// setup the canvas context
canvas.height = imageFrame.rows;
canvas.width = imageFrame.columns;
var context = canvas.getContext('2d');
var imageData = context.createImageData(imageFrame.columns, imageFrame.rows);
cornerstoneWADOImageLoader.convertColorSpace(imageFrame, imageData);
imageFrame.imageData = imageData;
imageFrame.pixelData = imageData.data;
}
}
var image = {
imageId: imageId,
color: cornerstoneWADOImageLoader.isColorImage(imageFrame.photometricInterpretation),
color: isColorImage,
columnPixelSpacing: imagePlaneModule.pixelSpacing ? imagePlaneModule.pixelSpacing[1] : undefined,
columns: imageFrame.columns,
height: imageFrame.rows,
@ -400,7 +413,7 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
render: undefined, // set below
rowPixelSpacing: imagePlaneModule.pixelSpacing ? imagePlaneModule.pixelSpacing[0] : undefined,
rows: imageFrame.rows,
sizeInBytes: getSizeInBytes(imageFrame),
sizeInBytes: imageFrame.pixelData.length,
slope: modalityLutModule.rescaleSlope ? modalityLutModule.rescaleSlope: 1,
width: imageFrame.columns,
windowCenter: voiLutModule.windowCenter ? voiLutModule.windowCenter[0] : undefined,
@ -409,25 +422,11 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
webWorkerTimeInMS: imageFrame.webWorkerTimeInMS
};
// add function to return pixel data
image.getPixelData = function() {
return imageFrame.pixelData;
};
// convert color space
if(image.color) {
// setup the canvas context
canvas.height = imageFrame.rows;
canvas.width = imageFrame.columns;
var context = canvas.getContext('2d');
var imageData = context.createImageData(imageFrame.columns, imageFrame.rows);
cornerstoneWADOImageLoader.convertColorSpace(imageFrame, imageData);
imageFrame.imageData = imageData;
imageFrame.pixelData = imageData.data;
}
// Setup the renderer
if(image.color) {
image.render = cornerstone.renderColorImage;
@ -536,7 +535,7 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
{
if(imageFrame.bitsAllocated === 8)
{
return cornerstoneWADOImageLoader.decodeJPEGBaseline8Bit(imageFrame, canvas);
return cornerstoneWADOImageLoader.decodeJPEGBaseline8Bit(imageFrame, pixelData, canvas);
} else {
return addDecodeTask(imageFrame, transferSyntax, pixelData, options);
}
@ -625,11 +624,11 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
}
}
function decodeJPEGBaseline8Bit(imageFrame, canvas) {
function decodeJPEGBaseline8Bit(imageFrame, pixelData, canvas) {
var start = new Date().getTime();
var deferred = $.Deferred();
var imgBlob = new Blob([imageFrame.pixelData], {type: "image/jpeg"});
var imgBlob = new Blob([pixelData], {type: "image/jpeg"});
var r = new FileReader();
if(r.readAsBinaryString === undefined) {
@ -669,10 +668,10 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
return deferred.promise();
}
function isJPEGBaseline8Bit(imageFrame) {
if((imageFrame.bitsAllocated === 8) &&
imageFrame.transferSyntax === "1.2.840.10008.1.2.4.50")
{
function isJPEGBaseline8Bit(imageFrame, transferSyntax) {
transferSyntax = transferSyntax || imageFrame.transferSyntax;
if((imageFrame.bitsAllocated === 8) && (transferSyntax === "1.2.840.10008.1.2.4.50")) {
return true;
}
@ -871,7 +870,7 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
var response = new Uint8Array(imageFrameAsArrayBuffer);
// First look for the multipart mime header
var tokenIndex = cornerstoneWADOImageLoader.wadors.findIndexOfString(response, '\n\r\n');
var tokenIndex = cornerstoneWADOImageLoader.wadors.findIndexOfString(response, '\r\n\r\n');
if(tokenIndex === -1) {
deferred.reject('invalid response - no multipart mime header');
}
@ -882,18 +881,23 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
if(!boundary) {
deferred.reject('invalid response - no boundary marker')
}
var offset = tokenIndex + 3; // skip over the \n\r\n
var offset = tokenIndex + 4; // skip over the \r\n\r\n
// find the terminal boundary marker
var endIndex = cornerstoneWADOImageLoader.wadors.findIndexOfString(response, boundary, offset);
if(endIndex === -1) {
deferred.reject('invalid response - terminating boundary not found');
}
// Remove \r\n from the length
var length = endIndex - offset - 2;
// return the info for this pixel data
var length = endIndex - offset;
deferred.resolve({
contentType: findContentType(split),
imageFrame: new Uint8Array(imageFrameAsArrayBuffer, offset, length)
imageFrame: {
pixelData: new Uint8Array(imageFrameAsArrayBuffer, offset, length)
}
});
});
return deferred.promise();
@ -925,7 +929,7 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
// TODO: load bulk data items that we might need
var mediaType;// = 'image/dicom+jp2';
var mediaType = 'multipart/related; type=application/octet-stream'; // 'image/dicom+jp2';
// get the pixel data from the server
cornerstoneWADOImageLoader.wadors.getPixelData(uri, imageId, mediaType).then(function(result) {
@ -1096,8 +1100,13 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
planarConfiguration: getValue(metaData['00280006']),
pixelAspectRatio: getValue(metaData['00280034']),
smallestPixelValue: getValue(metaData['00280106']),
largestPixelValue: getValue(metaData['00280107'])
// TODO Color Palette
largestPixelValue: getValue(metaData['00280107']),
redPaletteColorLookupTableDescriptor: getNumberValues(metaData['00281101']),
greenPaletteColorLookupTableDescriptor: getNumberValues(metaData['00281102']),
bluePaletteColorLookupTableDescriptor: getNumberValues(metaData['00281103']),
redPaletteColorLookupTableData: getNumberValues(metaData['00281201']),
greenPaletteColorLookupTableData: getNumberValues(metaData['00281202']),
bluePaletteColorLookupTableData: getNumberValues(metaData['00281203'])
};
}
@ -1220,7 +1229,6 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
// This uri is not loaded or being loaded, load it via an xhrRequest
var promise = loadRequest(uri, imageId);
promises[uri] = promise;
// handle success and failure of the XHR request load
var loadDeferred = $.Deferred();
@ -1240,6 +1248,8 @@ if(typeof cornerstoneWADOImageLoader === 'undefined'){
// error thrown, remove the promise
delete promises[uri];
});
promises[uri] = loadDeferred;
return loadDeferred;
}