How to create a smart Photobooth
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This is a talk I gave at November 2017 on how I created a photobooth with DSLR and a photo printer, and added facial recognition to it.
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How to create a smart Photobooth
- 1. Impress Your friends: Create a Smart Photobooth Hao Luo Sr Technical Evangelist – Microsoft @howlowck
- 2. Outline • Overview of the Project • First Demo! • Deep dive on the photobooth • Facial Recognition • Second Demo!
- 3. Why did I build a Photobooth? • Married this year • $$$$ • I like a challenge
- 4. Requirements • High Quality Photos (DSLR) • Intuitive, User Friendly (touch interface) • Customized Print • As much NodeJS as possible
- 5. It was fun!
- 6. The Hardware
- 7. The Camera Canon 6D 50mm Prime Lens Any Canon Camera
- 8. The Printer Canon Selphy CR1200 Printer (10 seconds per print) Any Wifi connected Printer
- 9. The Hotspot Netgear Jetpack (Verizon) Any Mobile hotspot
- 10. The Computer Surface Book Touch enabled Laptop
- 13. Challenges (Unknowns) • Triggering the DSLR • Getting the captured image back from the DSLR • Capturing the streaming image from the DSLR • Programmatically call a printer to print a photo Webcam
- 14. Triggering the DSLR • Triggertrap • 😢 • https://www.diyphotography.net/building-diy-trigger-trap/ • https://github.com/Triggertrap/mobile-dongle (open sourced HW)
- 15. Mimicking the Mobile App
- 16. Getting the photos back from DSLR • Canon EOS Utility (Windows, Mac, Linux Supported) • Saved to an import folder • chokidar package • Save a copy to the working directory • Notifies the frontend to show up on the screen
- 17. The Printer • Internet Printer Protocol (IETF Spec) • `npm install ipp`
- 19. Facial Recognition • Microsoft Cognitive Services Face API • Features: • Verify • Detect • Identify • Group • To use Identify Endpoint 1. Train the API with known persons 2. Call the identify endpoint in your app
- 20. Training a Face Train Train the PersonGroup Add (get a picture) Add a Face to the Person Create Create a Person List List everyone in your PersonGroup Create Create/Get a PersonGroup
- 21. Two Tools • Face Trainer (serverless/static web app) • https://face.lifeishao.com • Mobile Web App for Users • http://aka.ms/nodevemberphoto
- 22. Demo! (with Facial Recognition)
- 23. Lessons Learned from this setup • Two cameras can be confusing (people don’t read) • DSLR focus should be automatic • Still needs someone to monitor the photobooth
- 24. Summary • Cost $300 new cost • $100 photo printer, • $50 camera accessories, • $150 ink and photo paper • Next Step Ideas: • Electron App • Smaller Form Factor (Raspberry Pi) • Getting the feed from Camera. • https://github.com/howlowck/haos-photobooth • I Learned a ton
- 25. Questions? • https://www.diyphotography.net/building-diy-trigger-trap/ (Simplified Circuit for TriggerTrap) • https://github.com/Triggertrap/mobile-dongle (open sourced HW) • https://face.lifeishao.com (static web app for Face API management) • http://aka.ms/nodevemberphoto (for adding yourself to this photobooth) • https://github.com/howlowck/haos-photobooth (repo for this photobooth)
Editor's Notes
- Need one for the wedding $200/hour = $1600 I’ve seen a lot of them during events. And they’ve always been kind of janky. Either the camera is off of an iPad so the image quality is not good, or they try to be “cool” and send you a digital copy. Props to my wife, Mia because when I told her that I wanted to make a photobooth, she knew I was going to put a ton of time on this thing and not on wedding planning. But she supported me anyway.
- It was a success! People had a lot of fun at the photobooth, and Mia and I were able to look back at all of them as well.
- I thought it was some kind of encrypted signal. I had to put the mobile app on the desktop. Then I saw this Medium article: So I wrote a simple javascript function that generates a sine wave to trigger the trigger trap