diy Physics Blog

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Hack-A-Day 2015 Prize DOLPi Submission Video

Posted on August 7, 2015 by David Prutchi Posted in Uncategorized

Hi! DOLPi is a low-cost polarization camera based on the Raspberry Pi.

Like intensity and color, polarization is another property of a light wave.

Humans cannot sense polarization, but many animals like cuttlefish and insects have polarization-sensitive vision that they use for navigation, finding water, and detecting transparent prey.

This is DOLPi – it is completely self-contained and easy to build. In spite of its simplicity, it holds truly awesome power for the development of brand new scientific and commercial applications!

For example, DOLPi’s images can be used to locate landmines, identify cancerous tissues, see underwater, detect invisible pollutants, and who knows – maybe even observe cloaked UFOs!

At the heart of DOLPi is a liquid-crystal panel harvested from a cheap welding-mask filter.

An autocalibration circuit finds the right liquid crystal drive amplitudes to analyze at 0, 45, and 90⁰.

DOLPi’s Python imaging loop takes the polarized images, and then combines them into a single color picture that encodes polarization.

For example, these nine pieces of polarizer film all look the same to a human eye. But they look very different through DOLPi

The polarization angle, degree of polarization, and polarization intensity are encoded in HSV space, making the picture easy to interpret.

It is my hope that DOLPi will open the obscure field of polarization imaging so that fellow enthusiasts will be able to develop game-changing applications across a wide range of fields – spanning all the way from environmental monitoring and medical diagnostics, to security and antiterrorism applications.

« DOLPi’s first pictures outside the lab
DOLPi is a Hack-a-Day 2015 Semifinalist! »

Buy our book at Amazon.com

Navigate diyphysics.com

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Categories

  • Administrative
  • Book Chapters
    • Chapter 1 – Light as a Wave
    • Chapter 2 – Light as Particles
    • Chapter 3 – Atoms and Radioactvity
    • Chapter 4 – The Priciple of Quantum Physics
    • Chapter 5 – Wave-Particle Duality
    • Chapter 6 – The Uncertainty Principle
    • Chapter 7 – Schrödinger's Wave Equation
    • Chapter 8 – Entanglement
  • Experiments
    • Attenuation of Radiation
    • Bell's Inequality Test
    • Compton Scattering
    • Doppler Effect
    • e/m Measurement
    • Emission Spectrometry
    • Entanglement
    • Glow Discharge
    • Ionizing Radiation Detection
    • Maltese Cross CRT
    • Plasma Physics
    • QKD
    • Quantum Dots
    • Quantum Random Number Generation
    • Quantum Tunneling
    • Radio-Isotope Identification
    • Relativistic Time Dilation
    • Rutherford Alpha-Particle Scattering
    • Single-Electron Experiments
    • Single-Photon Experiments
    • Single-Slit Diffraction
    • Two-Slit Interference
    • β-Particle Magnetic Deflection
  • Instrumentation
    • CDV700 Pro Geiger-Müller Counter
    • Electron-Beam Tube
    • Entangled-Photon Source
    • Gunnplexer Transceiver
    • High-Voltage Power Supply
    • Lasers
    • Mach-Zehnder Interferometer
    • Magneto-Optical Trap
    • Marx Generators
    • MCA/PHA
    • Photomultipliers
    • Photon/Coincidence Counter
    • PMT/Scintillation Processor
    • Polarimetric Imaging
    • Polymeric Radiation Detector
    • Precision Clocks and Timers
      • Atomic Clock
      • GPS-Disciplined
    • Radioisotopes
    • Scintillation Detector
    • Single-Photon Counting Modules (SPCMs)
    • Single-Photon Imaging
    • Spectrometer
    • Thermal Camera
    • Ultraviolet Illuminators
    • Vacuum System
  • Medium Wave Infrared Imaging
  • Nuclear Magnetic Resonance NMR
  • Physics Humor
  • Theoretical Physics
  • Ultraviolet Imaging
  • Uncategorized

Educational Resources

  • ALPhA Advanced Laboratory Physics Association
  • American Journal of Physics
  • Circuit Cellar
  • Dr. Enrique Galvez' Correlated-Photon Experiments Guide
  • Dr. Mark Beck's Undergraduate QM Experiments
  • The Bell Jar

Blogroll

  • Dorith Prutchi's Professional Website
  • More of our projects at prutchi.com
  • My Blog on Implantable Devices
  • My Infrared-to-UV Photography Site

Pages

  • Book
    • Book Contents
    • Adopt the Textbook
    • Back Cover
    • Instructor’s Guide
    • Software
    • Book Errata
  • About Us
  • Contact Us
  • Terms of Use
  • Privacy Policy

Archives

  • November 2023
  • September 2023
  • May 2021
  • March 2021
  • July 2019
  • November 2018
  • October 2018
  • April 2018
  • March 2018
  • November 2016
  • October 2016
  • September 2016
  • July 2016
  • March 2016
  • December 2015
  • November 2015
  • October 2015
  • September 2015
  • August 2015
  • July 2015
  • February 2014
  • December 2013
  • July 2013
  • May 2013
  • April 2013
  • March 2013
  • February 2013
  • January 2013
  • December 2012
  • October 2012
  • September 2012
  • August 2012
  • June 2012
  • May 2012
  • April 2012
  • March 2012
  • February 2012
  • January 2012
  • December 2011

Categories

  • Administrative (9)
  • Book Chapters (61)
    • Chapter 1 – Light as a Wave (2)
    • Chapter 2 – Light as Particles (10)
    • Chapter 3 – Atoms and Radioactvity (27)
    • Chapter 4 – The Priciple of Quantum Physics (3)
    • Chapter 5 – Wave-Particle Duality (13)
    • Chapter 6 – The Uncertainty Principle (2)
    • Chapter 7 – Schrödinger's Wave Equation (7)
    • Chapter 8 – Entanglement (18)
  • Experiments (57)
    • Attenuation of Radiation (2)
    • Bell's Inequality Test (8)
    • Compton Scattering (8)
    • Doppler Effect (2)
    • e/m Measurement (3)
    • Emission Spectrometry (2)
    • Entanglement (12)
    • Glow Discharge (1)
    • Ionizing Radiation Detection (18)
    • Maltese Cross CRT (1)
    • Plasma Physics (1)
    • QKD (3)
    • Quantum Dots (1)
    • Quantum Random Number Generation (3)
    • Quantum Tunneling (2)
    • Radio-Isotope Identification (7)
    • Relativistic Time Dilation (1)
    • Rutherford Alpha-Particle Scattering (1)
    • Single-Electron Experiments (1)
    • Single-Photon Experiments (22)
    • Single-Slit Diffraction (1)
    • Two-Slit Interference (4)
    • β-Particle Magnetic Deflection (2)
  • Instrumentation (79)
    • CDV700 Pro Geiger-Müller Counter (7)
    • Electron-Beam Tube (4)
    • Entangled-Photon Source (6)
    • Gunnplexer Transceiver (2)
    • High-Voltage Power Supply (10)
    • Lasers (3)
    • Mach-Zehnder Interferometer (1)
    • Magneto-Optical Trap (1)
    • Marx Generators (3)
    • MCA/PHA (10)
    • Photomultipliers (15)
    • Photon/Coincidence Counter (4)
    • PMT/Scintillation Processor (9)
    • Polarimetric Imaging (4)
    • Polymeric Radiation Detector (1)
    • Precision Clocks and Timers (3)
      • Atomic Clock (2)
      • GPS-Disciplined (1)
    • Radioisotopes (1)
    • Scintillation Detector (14)
    • Single-Photon Counting Modules (SPCMs) (12)
    • Single-Photon Imaging (3)
    • Spectrometer (1)
    • Thermal Camera (1)
    • Ultraviolet Illuminators (3)
    • Vacuum System (2)
  • Medium Wave Infrared Imaging (1)
  • Nuclear Magnetic Resonance NMR (3)
  • Physics Humor (9)
  • Theoretical Physics (1)
  • Ultraviolet Imaging (1)
  • Uncategorized (28)

WordPress

  • Log in
  • WordPress
© diy Physics Blog