rii-mango / jpeglosslessdecoderjs Goto Github PK

A JPEG Lossless decoder (JavaScript).

License: MIT License

JavaScript 43.02% TypeScript 56.98%

jpeglosslessdecoderjs's Introduction

JPEGLosslessDecoderJS

A common DICOM compression format is JPEG Lossless. This format is generally not supported in standard JPEG decoder libraries.

This decoder can read data from the following DICOM transfer syntaxes:

1.2.840.10008.1.2.4.57 JPEG Lossless, Nonhierarchical (Processes 14)
1.2.840.10008.1.2.4.70 JPEG Lossless, Nonhierarchical (Processes 14 [Selection 1])

Usage

API and more examples

var decoder = new jpeg.lossless.Decoder();
var output = decoder.decompress(buffer [, offset [, length]]);

// Parameters
// {ArrayBuffer} buffer
// {Number} offset offset into buffer (default = 0)
// {Number} length length of buffer (default = end of JPEG block)

// Returns
// {ArrayBuffer} output (size = cols * rows * bytesPerComponent * numComponents)

Install

Get a packaged source file from the release folder:

Or install via NPM:

npm install jpeg-lossless-decoder-js

Testing

npm test

Building

npm run build

This will output lossless.js and lossless-min.js alongside declaration files and source maps to /release.

Acknowledgments

This decoder was originally written by Helmut Dersch for Java. I added support for selection values 2 through 7, contributed bug fixes and ported to JavaScript.

Also thanks to @jens-ox for modernizing this package to TypeScript.

jpeglosslessdecoderjs's People

Contributors

Stargazers

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Forkers

leonardorame chafey nagyistge reflexionmed nicolasrannou yu0089 zuopengcy yjsyyyjszf sethealth voxelmed elimb grimmer0125 gigakiller huhurun jens-ox

jpeglosslessdecoderjs's Issues

performance

I use JPEG Lossless to load some CT data ( 1900 x 2500 x 80).
Each frames takes about 600ms to be decoded, so my total loading time is about 600ms x 80 frames, which is huge.

Is there any way to improve performance somehow?

I do the following for each frame:

    let byteOutput = bitsAllocated <= 8 ? 1 : 2;
    let decoder = new Jpeg.lossless.Decoder();
    let decompressedData = decoder.decode(encodedPixelData.buffer, encodedPixelData.byteOffset, encodedPixelData.length, byteOutput);

'Not a JPEG file' thrown for .57 image

This .57 image threw 'Not a JPEG file':

http://barre.nom.fr/medical/samples/#MR-MONO2-12-shoulder

Load fine in Osirix. Any ideas?

Strange decoding behavior ?

I have some DICOM with OCT Scans composed of 49 frames.

The first frame is decoded correctly but it doesn't seem to work for the rest of the images ? Frames are contained in fragments.

Some of my code :

    offset = pixelDataElement.fragments[frame].position;
    frameSize = pixelDataElement.fragments[frame].length;

    pixelData = new Uint8Array(dataset.byteArray.buffer, offset, frameSize); //get compressed data
    pixelData = new Uint8Array(decoder.decompress(pixelData)); //decompress

Non GPL License possible?

Hello,

Congratulations on this great effort! I would love to add this to the cornerstone project which is licensed under MIT - would it be possible to dual license this library so there is no conflict?

Chris

Workaround for invalid JPEG encoding

See thread here:
https://groups.google.com/forum/#!topic/comp.protocols.dicom/JUuz0B_aE5o

uncorrect decode

this file can't decode correct

RGB lossless File

Global 'jpeg' variable lost in latest NPM build.

Installed latest 2.0.5 version from NPM and missed 'jpeg' variable.

<script src="../node_modules/jpeg-lossless-decoder-js/release/current/lossless.js"></script>
<script>
const decoder = new jpeg .lossless .Decoder ();
// oops no 'jpeg' variable
</script>

Unable to parse the attached JPEG Lossless file correctly

I tried to use your code to open a JPEG Lossless file at https://www.dropbox.com/s/0u08ejwn1hxrhku/002850d9.dcm?dl=0, but the code didn't parse it correctly (it didn't report any error either). Interestingly, pixel #0 to #511 are all correct: but pixel #512 and afterwards are incorrect. The correct value for pixel #512 should be 972, but we got 34711 instead.

Decoded using JPEGLosslessDecoderJS

Version 2.1.0 is broken version 2.0.7 works

node:internal/modules/cjs/loader:444
      throw err;
      ^

Error: Cannot find module '/usr/src/app/node_modules/jpeg-lossless-decoder-js/build/main.js'. Please verify that the package.json has a valid "main" entry
    at tryPackage (node:internal/modules/cjs/loader:436:19)
    at Module._findPath (node:internal/modules/cjs/loader:678:18)
    at Module._resolveFilename (node:internal/modules/cjs/loader:1061:27)
    at Module._load (node:internal/modules/cjs/loader:920:27)
    at Module.require (node:internal/modules/cjs/loader:1141:19)
    at require (node:internal/modules/cjs/helpers:110:18)
    at Object.<anonymous> (/usr/src/app/node_modules/daikon/src/image.js:14:48)
    at Module._compile (node:internal/modules/cjs/loader:1254:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1308:10)
    at Module.load (node:internal/modules/cjs/loader:1117:32) {
  code: 'MODULE_NOT_FOUND',
  path: '/usr/src/app/node_modules/jpeg-lossless-decoder-js/package.json',
  requestPath: 'jpeg-lossless-decoder-js'
}

npm test fails

Tests did not pass.

pedro@debian:~/node_modules/jpeg-lossless-decoder-js$ npm test

> [email protected] test /home/pedro/node_modules/jpeg-lossless-decoder-js
> mocha tests


/home/pedro/node_modules/jpeg-lossless-decoder-js/src/decoder.js:137
        throw new Error("Not a JPEG file");
              ^
Error: Not a JPEG file
    at jpeg.lossless.Decoder.decode (/home/pedro/node_modules/jpeg-lossless-decoder-js/src/decoder.js:137:15)
    at Object.<anonymous> (/home/pedro/node_modules/jpeg-lossless-decoder-js/tests/driver-sel1-oldapi.js:33:22)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at /home/pedro/node_modules/mocha/lib/mocha.js:230:27
    at Array.forEach (native)
    at Mocha.loadFiles (/home/pedro/node_modules/mocha/lib/mocha.js:227:14)
    at Mocha.run (/home/pedro/node_modules/mocha/lib/mocha.js:513:10)
    at Object.<anonymous> (/home/pedro/node_modules/mocha/bin/_mocha:480:18)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:906:3
npm ERR! Test failed.  See above for more details.
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read
/usr/share/doc/nodejs/README.Debian
 
npm ERR! not ok code 0

Dicom Image decode jpeg lossless decoder

I have an issue when i try to decode the dicom image and extract it's image data by lossless decoder
you can have alook here :
cornerstonejs/cornerstone#40