photobooth

This is yet another photobooth application written in python3 using a Raspberry Pi, gPhoto2 and pygame.

It's intended to run on raspberry pi 3 with following devices connected:

• Sony Cam accessed via wifi api
• touchscreen (Waveshare 7" HDMI 1024*600 Rev2.1)
• big red pushbutton (not added yet)
• printer (Canon selphy cp1300)
• wooden case

features

• supported camera types: Sony wifi api, gphoto2 (e.g. DLSR), openCV capture (webcam), picamera for raspberry pi
• idle state: slideshow of today's pictures
• controlled touchscreen and optional GPIO button - or keyboard (mainly for testing)
• different layouts (e.g. how pictures are arranged)
• different color filters (e.g. monochrome or fancy color filters)
• option: wide or portrait (cropped)
• preview during countdown
• preview streams are kept in memory
• print option
• customization with "themes" (used in gui and layout)

Ideas for features

• Transfer picture to smartphone (e.g. with bluetooth)
• Add effects: sephia, rainbowify
• Add layouts
• Add banner / other theme elements in layout

usage

python3 photobooth.py [theme] [--fullscreen]

Issues

DSLRs (at least the 650D) can not (hardly) focus during preview.

• workarounds:
  • camera settings: "quick mode AF" interrupts preview to focus
    • downside: takes some time to take picture ( mirror goes up and down several times)
  • camera settings: "continous AF" disabled allows to disable focus
    • manually focus (without preview) 1 second before picture is taken
    • continue preview
    • take picture without refocusing
  • use additional camera (e.g. picamera) for preview
    • placed next to main camera
    • placed in optical viewfinder
      • results in poor image quality
  • use other cam (no DSLR, the mirrorless Sony alpha 6000 does not have issues with focus)
  • Switching preview on and off takes 2 seconds

prequirements

• patched sony api (see my git sony_camera_api)
• usage of sony cam depends on network manager (which is not default on raspberrypi)