matlab code for JPEG2000

Can any one soon provide me matlab code for implementing JPEG2000 . Thank you in advance.

Answer 1

[Steven Lord]

Just call imwrite with 'jp2' or 'jpx' as the fmt input argument.

[N/A]

its is working for jpg but not for jp2 or jpx

following error is coming--

??? Error using ==> imwrite

Invalid input syntax

Error in ==> jpeg2000impt at 2

imwrite(X,'newImage.jp2','jp2')

Thank you

[madhan ravi]

imwrite(X,'newImage.jp2')

[Walter Roberson]

That should be accepted in current matlab . which release are you using ?

[N/A]

I am using version 7.0.0.19920 (R14)

[N/A]

sir can you you help me in this @walter-roberson?

Thank you.

[Walter Roberson]

No, I cannot assist you with that. See Legal Problems

Answer 2

[N/A]

If possible then Can any one do it for me as I dont have new version.

It will be a great help, please do it.

I am attaching required files --

thank you in advance.

X = imread('C:\work\Lena.png');
imwrite(X,'newImage.jp2','jp2','Comment','My JPEG2000 file')
imfinfo('newImage.jp2')
imfinfo('Lena.png')

[Walter Roberson]

>> imfinfo('newImage.jp2')
ans = 
  struct with fields:

                      Filename: '/Users/roberson/MATLAB/4/429/429805/newImage.jp2'
                   FileModDate: '15-Nov-2018 12:22:28'
                      FileSize: 331669
                        Format: 'JP2'
                 FormatVersion: []
                         Width: 512
                        Height: 509
                      BitDepth: 24
                     ColorType: 'truecolor'
                 BitsPerSample: [8 8 8]
                 CodeBlockDims: [64 64]
          CodestreamComponents: 3
             CodestreamProfile: 'PROFILE2'
                    ColorSpace: 'sRGB'
                      Comments: {'My JPEG2000 file'}
             ChannelDefinition: {3×3 cell}
            ImageStartLocation: [1 1]
                 NumberOfTiles: 1
              ProgressionOrder: 'LRCP: Layer, Resolution, Component, Position'
                 QualityLayers: 1
                      TileSize: [509 512]
    WaveletDecompositionLevels: 4
                 WaveletKernel: '9x7'
              WidthSubSampling: [1 1 1]
             HeightSubSampling: [1 1 1]
>> imfinfo('index.png')
ans = 
  struct with fields:

                  Filename: '/Users/roberson/MATLAB/4/429/429805/index.png'
               FileModDate: '15-Nov-2018 12:19:52'
                  FileSize: 236547
                    Format: 'png'
             FormatVersion: []
                     Width: 512
                    Height: 509
                  BitDepth: 24
                 ColorType: 'truecolor'
           FormatSignature: [137 80 78 71 13 10 26 10]
                  Colormap: []
                 Histogram: []
             InterlaceType: 'none'
              Transparency: 'none'
    SimpleTransparencyData: []
           BackgroundColor: []
           RenderingIntent: []
            Chromaticities: []
                     Gamma: 0.454549998044968
               XResolution: []
               YResolution: []
            ResolutionUnit: []
                   XOffset: []
                   YOffset: []
                OffsetUnit: []
           SignificantBits: []
              ImageModTime: []
                     Title: []
                    Author: []
               Description: []
                 Copyright: []
              CreationTime: []
                  Software: []
                Disclaimer: []
                   Warning: []
                    Source: []
                   Comment: []
                 OtherText: []

[Walter Roberson]

I notice the jp2 is larger than the png.

[N/A]

Thank you so much sir for this. I will be in debt for this great help.

Please do one last favour can you please share the resultant newimage with me. Actually I need it to show comparison with JPEG and JPEG2000.

Thank you once again.

[Walter Roberson]

MATLAB Student

[Walter Roberson]

R2010a or later for JPEG 2000 support.

Your R14 (7.0.0) is over 14 years old. Time for you to upgrade.

[N/A]

Okay .

thank you sir.