Difference between revisions of "Working with raw image data"
From ElphelWiki
(→bayer2rgb program) |
(→bayer2rgb program) |
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* Available [https://github.com/jdthomas/bayer2rgb here]. | * Available [https://github.com/jdthomas/bayer2rgb here]. | ||
<font size='2em'>bayer2rgb -w 2608 -v 1940 -b 8 -f GRBG -m AHD -t -i test.raw -o test.tiff</font> | <font size='2em'>bayer2rgb -w 2608 -v 1940 -b 8 -f GRBG -m AHD -t -i test.raw -o test.tiff</font> | ||
+ | The result is a colored image. Pixel values are linear. |
Revision as of 12:15, 12 January 2018
Downloading
- Available options (channels can be 0..3):
# set receiving buffer size in 4kB pages (thus 4096 equals to 16MB) echo {size} > /sys/devices/soc0/elphel393-mem\@0/buffer_pages_raw_chn2 # start from the N-th frame position in buffer. Currently, 0 or 1 echo 1 > /sys/devices/soc0/elphel393-videomem\@0/video_frame_number # initiate transfer, wait for X-th frame (X - absolute frame number), 0 = no waiting echo X > /sys/devices/soc0/elphel393-videomem\@0/membridge_start2 # copy to file cat /dev/image_raw2 > /tmp/test.raw # see in hex hexdump /tmp/test.raw # copy to PC scp /tmp/test.raw user@address:/path/
- Minimal:
echo 4096 > /sys/devices/soc0/elphel393-mem\@0/buffer_pages_raw_chn2 echo 0 > /sys/devices/soc0/elphel393-videomem\@0/membridge_start2 cat /dev/image_raw2 > /tmp/test.raw
Displaying
ImageMagick
- Camera settings: 2592x1936 JPEG, actual pixels available: 2608x1940
convert -size 2608x1940 -depth 8 -endian MSB -normalize gray:test.raw -compress lzw result.tiff
- Camera settings: 2592x1936 JP4, actual pixels available: 2592x1936
convert -size 2592x1936 -depth 8 -endian MSB -normalize gray:test.raw -compress lzw result.tiff
The result is a grayscale tiff
bayer2rgb program
- Available here.
bayer2rgb -w 2608 -v 1940 -b 8 -f GRBG -m AHD -t -i test.raw -o test.tiff
The result is a colored image. Pixel values are linear.