Help - Search - Members - Calendar
Full Version: How to demosaic raw Bayer images?
Unmanned Spaceflight.com > EVA > Image Processing Techniques
elakdawalla
There's been discussion elsewhere on the forum about how to demosaic images that come down as raw pixel values from cameras with Bayer filters, but I have not been able to do this myself and am looking for some help. What do you folks recommend to demosaic images? I'm a Windows user...

In this post Damia recommended ImageJ with the Debayer plugin. I downloaded ImageJ (now Fiji) from here and the Debayer plugin from here as well as the PDS Reader plugin from here. Trying the Debayer plugin on a raw MSL image, the following error appeared in the console, and I'm not sure what to do to solve the problem; can anybody help?

QUOTE
Compiling 1 file in C:\Users\Emily\AppData\Local\Temp\java6621339374403543752
C:\Users\Emily\AppData\Local\Temp\java6621339374403543752\src\main\java\Debayer_Image.java:8: cannot access java.lang.Object
bad class file: ZipFileIndexFileObject[D:\CloudStation\Pictures\Fiji.app\java\win64\jdk1.8.0_66\jre\lib\rt.jar(java/lang/Object.class)]
class file has wrong version 52.0, should be 50.0
Please remove or make sure it appears in the correct subdirectory of the classpath.
public class Debayer_Image implements PlugInFilter {
^
org.scijava.minimaven.JavaCompiler$CompileError: Compile error: 1
at org.scijava.minimaven.JavaCompiler.call(JavaCompiler.java:105)
at org.scijava.minimaven.MavenProject.build(MavenProject.java:538)
at org.scijava.minimaven.MavenProject.build(MavenProject.java:463)
at org.scijava.minimaven.MavenProject.build(MavenProject.java:446)
at org.scijava.plugins.scripting.java.JavaEngine.compile(JavaEngine.java:211)
at org.scijava.plugins.scripting.java.JavaEngine.eval(JavaEngine.java:135)
at org.scijava.plugins.scripting.java.JavaEngine.eval(JavaEngine.java:173)
at org.scijava.script.ScriptModule.run(ScriptModule.java:173)
at org.scijava.module.ModuleRunner.run(ModuleRunner.java:167)
at org.scijava.module.ModuleRunner.call(ModuleRunner.java:126)
at org.scijava.module.ModuleRunner.call(ModuleRunner.java:65)
at org.scijava.thread.DefaultThreadService$2.call(DefaultThreadService.java:191)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Floyd
C:\Users\Emily\AppData\Local\Temp\java6621339374403543752\src\main\java\Debayer_Image.java:8: cannot access java.lang.Object
bad class file: ZipFileIndexFileObject[D:\CloudStation\Pictures\Fiji.app\java\win64\jdk1.8.0_66\jre\lib\rt.jar(java/lang/Object.class)]
class file has wrong version 52.0, should be 50.0

Looks like the program expects version 50.0 rather than the more recent version 52.0 of java. You may be able to download the older version and put it in the correct folder to make the program happy.... (non-expert advise).
charborob
Is there a way to do it in PhotoShop (v. CS5, Mac)?
elakdawalla
I'd like to know the answer to this, too.
Ian R
Emily,

The free IRIS package looks like it has a good solution in the form of it's 'Convert a CFA image' command:

http://www.astrosurf.com/buil/iris/tutorial3/doc13_us.htm
Ian R
http://www.inweb.ch/foto/rawformat.html#debay
Gerald
To be fully compliant with the MMM cameras, apply the 5x5 kernel as described in the SIS, Appendix D.
This works well only with the lossless PDS EDRs. Lossy compressed JPGs result in a color cast.
elakdawalla
QUOTE (Ian R @ Jan 22 2016, 10:47 AM) *
Emily,

The free IRIS package looks like it has a good solution in the form of it's 'Convert a CFA image' command:

http://www.astrosurf.com/buil/iris/tutorial3/doc13_us.htm

Hooray, IRIS worked! Thank you!
Ian R
Yes! Hadn't tested it myself, so it was somewhat of a stab in the dark ... but I'm glad it worked! cool.gif
charborob
IRIS works for Windows only. Is there something for Mac users?
JohnVV
I have been using the G'Mic terminal program
it handles 32 bit float and 16 bit signed and unsigned

there is also a gimp plugin for it
and it works on 16 bit data if you build the plugin with Gimp 2.9.3 DEVELOPMENT

for the jpg's
CODE
gmic 0017ML0000500000100213C00_XXXX.jpg -bayer2rgb 1,1,1 -o 0017ML0000500000100213C00_XXXX.png


for the raw dat file
http://pds-imaging.jpl.nasa.gov/data/msl/M...R/SURFACE/0017/
CODE
dat2img 0017ML0000500000100213C00_XXXX.DAT test

cd test
pds2isis from=0017ML0000500000100213C00_XXXX_00.IMG to=0017ML0000500000100213C00_XXXX_00.cub

cubeatt from=0017ML0000500000100213C00_XXXX_00.cub to=0017ML0000500000100213C00_XXXX_00.raw+BSQ+detached


the dat2img code is here
http://pds-imaging.jpl.nasa.gov/data/msl/M...1/SOFTWARE/SRC/

now i have a raw bayer image
CODE
gmic 0017ML0000500000100213C00_XXXX_00.raw,uchar,1536,1152 -bayer2rgb 1,1,1 -o 0017ML0000500000100213C00_XXXX_00.png


JohnVV
or for the gimp plugin ( available as a prebuilt MS Windows and Apple plugin )
http://mars.jpl.nasa.gov/msl-raw-images/ms...0000C0_DXXX.jpg

the plugin , and for windows AND Apples Mac
http://gmic.eu/gimp.shtml


open the jpg in gimp

change it from a "gray" to a "RGB"
( image/mode/RGB )

then Filters / Gmic
that opens the plugin GUI
click the "Repair" list in the menu
then select the "Bayer Reconstruction"

the defaults are normally a GOOD start
the msl-raw image above




OR you can use "Krita"
the gmic plugin is ALREADY built into the program
runs on Linux , Apple, Windows

https://krita.org/
https://krita.org/download/krita-desktop/

elakdawalla
I am just bumping this topic because I had forgotten how to deBayer images and Googled and found this page and yep, IRIS worked for me again! biggrin.gif
Ian R
Hey, I'd forgotten about this. Thanks for the reminder, Emily!
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.
Invision Power Board © 2001-2019 Invision Power Services, Inc.