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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

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Strange compression ratio with x265 and jpeg2000 codecs

I've implement a picture encoding software using x265 and libjasper(jasper Jpeg2000) codecs, and I'm having strange ratio compression in lossless compression mode. My ratio compression is ( 1 - output_stream_size / initial_picture_size). Most of…
user6684929
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Region of interest in

I'm a developing an application using jasper library and i need to encode ROI some ROI (region of interest). I read in the jasper official website https://www.ece.uvic.ca/~frodo/jasper/ that, only the decoder support ROI. But i saw in the jpc codec…
user6684929
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How do I write a jpeg2000 with a transparent background in Java?

I'm using Java Advanced Imaging to read and write JPEG2000 images in java. When debugging in Intellij, I can view the BufferedImage and see that it's transparent. So I can stack layers on top of each other. But when I write it to a file, the…
jjjjj
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OpenLayers .jp2 Support

I am wondering if OpenLayers has support for .jp2 files. I have successfully imported a .jp2 file into geoserver, but when trying to view the layer in openlayers it will not show.
Jason Smith
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Discrete Wavelet Transform in Java creates white Spots in the Image

in my Java program, a image is loaded into the programm, then transformed using the discrete wavelet Transform and the resulting coefficients are used as picture data for the output image. The process works fine with natural images:…
darenkster
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Using ImageIO to convert from JPEG2000 to PNG

I'm trying to convert a JPEG2000 (.jp2) image to other formats (JPEG or PNG), so I try to use write method of javax.imageio package. This works fine for other formats (eg. JPEG to PNG), but when it comes to JPEG2000 (or TIFF) it throws an exception.…
amine khelifa
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Read GML for JP2 using OpenJPEG library?

The title sums it all up. But i must explain, that i don't seek GDAL solution. My aim is to read entire JP2 file with georeference using only OpenJPEG and my geoprojections library?
Alexandr Crit
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JPEG2000 in R or batch convert to geotiff

I am looking to open .jp2 images into R. I have Sentinel-2 satellite imagery, but I cannot seem to get JPEG2000 GDAL drivers installed correctly or linked to my R environment. I’ve tried working with Jasper, but that didn’t work out as I hoped. Are…
Lisa
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Java - How to convert a DICOM file to a JPEG2000 file?

I need to convert a DICOM file (.dcm) in a jpeg2000 format, someone has a code snippet that perform this operation? I found in the web only a way for the dcm to jpeg conversion (the first answer to that question: How to convert dicom file to jpg…
Luca89
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How to display a jpeg2000 image on a Jframe?

I have a jpeg2000 image, img.jp2 on a file, and on a DataInputStream object imgobj in my project, and want to show that image on a JFrame. The old version jai_imageio-1.1.jar recommended here and the jj2000 library are both included. I have tried: …
TiyebM
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J2K read in Tomcat doesn't work

I am facing the problem with loading J2K image files (jp2, jp2000) in my java application. What is strange is the fact, that the application runs correctly (the file is successfully read from disk) when it runs as standalone java application (or in…
shimon001
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python jpeg2000 compression with glymur

anyone familiar with glymur module? I would like to use this module to generate different jp2k type distortion images, but i really cant figure out how to apply this module, i found the code official page of…
He Liu
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Firefox plugin doesn't load data?

I have some JPEG2000 images that I'd like to make available on the web. I'm planning to use the LizardTech ExpressView browser plugin to do this. (It's at http://www.lizardtech.com/downloads/category/#plugins.) They provide some instructions for…
Reid Rivenburgh
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ghostscript and jpeg2000 images

Using gs 8.71, RedHat I'm having trouble converting pdf files that have jpeg2000 images embedded within. Part of the coding is to reduce the pdf image by 10% using the -c <> setpagedevice command. This command will work properly if the pdf file does…
Sam
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Differences between GML and GMLJP2

I'm wondering which are the differences between GML and GMLJP2. I know GMLJP2 is for JPEG2000, however I want to know if anything changes from one GML to the other. I found an ontology of GML and I want to know if it works for JPEG2000. I would…
Nana89
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