[Elphel-support] raw file from elphel

[support-list]

Venkat,

The RGB sequence in raw mode depends on the scan direction (sensor can be "flipped" vertically and/or horizontally. I haven't used it for quite a while (since the normal image processing is stable), so I would have to verify myself - what pixel it starts from.

I would recommend you to install ImageJ (http://rsbweb.nih.gov/ij/download.html) and our plugin (http://elphel.git.sourceforge.net/git/gitweb.cgi?p=elphel/ImageJ-Elphel;a=blob_plain;f=JP46_Reader_camera.java;hb=HEAD) - you may just save it under "plugins" directory of ImageJ, and then in t the ImageJ menu - select "plugins"->"Compile and Run". That plugin will open the JP4 file (or image directly from the camera) as a 32-bit Tiff file, it will also show all the related metadata (if you uncheck "silent") used for decoding. This code is guaranteed to stay current, so you may use it at least to compare teh results with what you code does.

Andrey

---- On Sun, 14 Oct 2012 00:52:30 -0700 Venkat Subbiah<venkat at magnasinc.com> wrote ---- 

 > Andrey,
 > 
 > 
 > Is response to this detail on the raw format
 > 
 > 
 > 
 > 
 > "Just sequence of bytes (or 16-bit words) corresponding to (width+4)*(height+4), where width and height are dimensions you'll get in normal mode" 
 > 
 > 
 > Assuming B(1,*) is firt row raw data, B(2,*) is second row raw data and so on
 > 
 > 
 > 1) Then would it be right to say this is the data corresponding to the first pixel
 > 
 >  
 > B(1,1) B(1,2) B (1,3) B(1,4)
 > B(2,1) B(2,2) B (2,3) B(2,4)
 > B(3,1) B(3,2) B (3,3) B(3,4)
 > B(4,1) B(4,2) B (4,3) B(4,4)
 > 
 > 
 > 2) Now in this data which is the data correspondig to red , green and blue
 >  
 > 
 > Thanks,
 > Venkat
 > 
 > 
 >  
 >  
 > 
 > 
 > 
 > 
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