PHONE COLORMETER FOR TRITATE TESTS

Digicop

Community Member
View Badges
Joined
Feb 4, 2020
Messages
64
Reaction score
20
Review score
+0 /0 /-0
Location
Rayne, LA
Has anyone tried to program an app for a smartphone color to measure different commercial test kits? I routinely use photoshop to get color readings to compare against the tests color guide. In fact I just found an iOS app called colormeter that will provide live RGB values from the phones camera.

Any ideas on how to improve accuracy, such as using known light source measured through the liquid versus the reflected light normally captured when taking a picture? Would using a complementary colored backdrop and measuring reflected light through the liquid improve accuracy or consistency? I am sure someone has tried this before.

Thanks,

Ricky
 
AS

garbled

Well-Known Member
View Badges
Joined
Nov 10, 2018
Messages
772
Reaction score
1,024
Review score
+0 /0 /-0
I'm currently failing at a similar project. Trying to use RGB color sensors to read the color of a DI cartridge. I keep getting the same numbers out of both cartridges. I suspect I have some reflection issues due to the glossy nature of the container... Hrmm, maybe I should try to hit it off-axis...
 

garbled

Well-Known Member
View Badges
Joined
Nov 10, 2018
Messages
772
Reaction score
1,024
Review score
+0 /0 /-0
My current plan is basically a 3d-printed object to contain the sensor and the thing being read. Maybe what you need is something similar. Like a box of a known color, maybe white, and you put the vial in a slot, so there is no stray light other than the flashlight of the phone...
 
Orphek OR3 reef aquarium LED lighting

elysics

Well-Known Member
View Badges
Joined
Jan 15, 2020
Messages
812
Reaction score
730
Review score
+0 /0 /-0
Wasn't there another thread on here about exactly that, reading the testkit endpoints via phone camera for people that have difficulties with that? Dont have a link to the thread right now but iirc there was a light and a cardboard contraption to prevent interference from outside light.

Edit: Found it, even got to article status:
 
Last edited:

I’m Batman

Active Member
View Badges
Joined
Nov 26, 2020
Messages
342
Reaction score
407
Review score
+0 /0 /-0
Location
SW Ohio
Great idea. Only problem I can see is every phone has different color output and cameras as well. Maybe even issues with “night mode” blue light filtering? Also android has 4 different screen color settings and the galaxy e models have a dumbed down color scale.
 

Iverson

New Member
View Badges
Joined
Dec 7, 2019
Messages
16
Reaction score
7
Review score
+0 /0 /-0
I use an app called "Aquarium Note". In it's "Tools" section it has one called "Color". You photograph your sample on the titration scale examples. Then you drag and drop "A", "B", and "C" markers to your photograph. The "B" marker goes on your sample; "A" goes on the lighter titration swatch, and "C" on a swatch that you think is darker. The app tells you which one your sample is closest to. I just saw that Alain Bouchard above also uses that app. (Sorry Alain, I'll go give myself a swirly now.)
 

What is your most favorite type of shrimp for your reef tank?

  • Peppermint Shrimp

    Votes: 24 4.6%
  • Banded Coral Shrimp

    Votes: 48 9.2%
  • Snapping or Pistol Shrimp

    Votes: 49 9.4%
  • Harlequin Shrimp

    Votes: 47 9.0%
  • Scarlet Skunk Cleaner Shrimp

    Votes: 158 30.3%
  • Blood Red Fire Shrimp

    Votes: 112 21.5%
  • Sexy Anemone Shrimp

    Votes: 32 6.1%
  • Camel Shrimp

    Votes: 1 0.2%
  • Other (please explain)

    Votes: 12 2.3%
  • NO shrimp in my tank

    Votes: 38 7.3%
Waterbox Aquariums: The Finest Aquariums
Top