Stack Overflow
Stack Overflow

Questions tagged [jpeg2000]

JPEG2000 is an image encoded format intended to supercede JPEG.

JPEG 2000 is an image compression standard and coding system. It was created by the Joint Photographic Experts Group committee in 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard (created in 1992) with a newly designed, wavelet-based method.

JPEG2000 is supported by Webkit based browsers (Safari, Chrome) on Mac OS X.

More information at Wikipedia page of JPEG2000

201 questions
2
votes
0 answers

JPEG2000 Encoder and Decoder

I am working on the JPEG2000 compression as a part of my research work. I want some kind of open source libraries that can decode the JPEG2000 image and give me its DWT coefficients. And then I would like to encode these coefficients to get the…
user3100148
  • 55
  • 1
  • 7
2
votes
1 answer

converting from Jpeg 2000 to DICOM using DCMTK

I am tring to convert a DICOM with JPEG 2000 Transfer Syntax to regular DICOM file (Explicit Little Endian, or Implicit Little Endian). I was able to read pixels from DICOM / JPEG 2000 file into a buffer, but I am now stuck on to create JPEG 2000…
Bhuvan Bose
  • 21
  • 1
  • 4
2
votes
2 answers

Using ImageIO to write JPEG 2000 with layers (i.e. decomposition levels)

Ok, here is our issue: We are trying to convert a series of black and white .tiff files into jpeg2000 .jpf files, using imageio. We are always getting viewable .jpf files, but they usually do not have the specified number of layers or decomposition…
Jeremythuff
  • 1,518
  • 2
  • 13
  • 35
2
votes
2 answers

jpedal jpg2000 error

I convert pdfs to images using jpedal. This works fine for most of the pdfs but some containing jpeg2000 i continue receiving the following error: java.lang.RuntimeException: JPeg 2000 Images needs the VM parameter -Dorg.jpedal.jai=true switch…
Georg
  • 183
  • 4
  • 18
2
votes
2 answers

openCV warning component data type mismatch

I am using OpenCV 2.4.4 on a Cent OS machine. My code currently loads an image with the warning: component data type mismatch here is the code: #include #include #include "imglib.h" int main( int argc, char** argv ) { Mat…
SZman
  • 141
  • 2
  • 12
2
votes
2 answers

jpeg2000 file structure viewer

For an application we are developing it is important for us to know how much data (in bytes) is stored in a JPEG2000 code stream for each resolution and quality layer. Does anybody know an application / library that can easily reveal this…
Alex Shtoff
  • 2,520
  • 1
  • 25
  • 53
2
votes
1 answer

Problems writing jpeg2000 using imageio

I'm trying to convert a DICOM image in jpeg2000 using imageio as in the below code, the same procedure is explained in oracle documentation, but doesn't work! I don't understand what I'm doing wrong. The Java Advanced Image I/O library is installed…
lindi
  • 21
  • 1
  • 3
1
vote
1 answer

How does the performance of Kakadu change with compression ratio?

Is there any analysis of how the compression and decompression performance of Kakadu changes with compression ratio? E.g., if we change the compression ratio from 2 to 10, how much slower will Kakadu (de)compress the same image? (Kakadu is a library…
Lev
  • 6,487
  • 6
  • 28
  • 29
1
vote
1 answer

How to decode JPX images in java?

I'm trying to render a pdf (with pdf-renderer or jpedal), and it can't handle an image encoded using JPX. Is there any open-source java library that can decode JPX?
aditsu quit because SE is EVIL
  • 4,019
  • 1
  • 34
  • 48
1
vote
1 answer

Printing JPEG2000 with PDFBOX

I'm testing the viability of jai-imageio-core and jai-imageio-jpeg2000 for a project that prints a PDF containing a JPEG2000 encoded image(s) using pdfbox-app. The docs for PDFBOX state the following: These [JPEG2000] libraries are optional and…
tresf
  • 7,103
  • 6
  • 40
  • 101
1
vote
1 answer

How to change the resolution of a JP2 image?

I tend to think that there is no way to modify the resolution on a JP2 header on Windows although I found that on Linux, there are such a tool and using ChatGPT, it gave me the name of jp2modify, tool that I was not able to find. So could you tell…
JP M
  • 11
  • 1
1
vote
1 answer

How to check if an image is "JPEG 2000" in Python?

How to check if an image file is JPEG 2000 in Python? If possible, without installing a heavy image library.
Marcel
  • 2,810
  • 2
  • 26
  • 46
1
vote
1 answer

How do I mount these JPEG2000 R, G, B files, with rasterio?

So my problem consists of the trying of getting 3 different .jp2 files - one corresponding to each band R, G, B - and mounting them as a solo RGB file. I'm using rasterio for the issue, and have followed the following…
Oz_Magician
  • 33
  • 3
1
vote
0 answers

No JPEG 2000 in Image Magick or PHP any more?

In other questions here, I see old lists of image file formats supported by Image Magick that include support for JPEG 2000, but when I run the 'identify -list format' command from the console of my Ubuntu 18.02 system, the JPEG 2000 formats are all…
Mike Higgins
  • 151
  • 5
1
vote
1 answer

How to find .jpg file size without headers?

I need to find size of a .jpg file without its header (or metadata). How can I do that? I guess JPEG data contains two parts: Header or metadata which is not related to image and has information about subsampling values or quantization table Main…
amin
  • 279
  • 4
  • 14
1 2 3
…
13 14