Revision as of 10:22, 27 March 2013

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Workflow

RPi side

• take photo on raspberry pi:
  • gphoto2 --capture-image-and-download --filename capt0004.jpg
• send to laptop:
  • cp capt0004.jpg rtwomey@192.168.2.1:~/Pictures/raspi
• USB reset device:
  • usbreset /dev/bus/usb/001/004

OS X side

• crop:
  • convert ~/Pictures/raspi/frame0001.jpg -crop 1450x1450+779+275 +repage square0001.jpg
• bg subtract:
  • python bgsubtract.py square0002.jpg square0008.jpg 20 2
• edge detect:
  • python edge.py square0001.jpg 20 255
• convert to pnm:
  • convert square0001_edge.png edge0001.pnm
• vectorize:
  • potrace edge0001.pnm --tight -i -s -o frame0001.svg
• send to gcode machine:

Helper script:

• python process_image.py ~/Pictures/raspi/frame0024.jpg
• produces frame0024.svg