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I might be going completely off-the-wall here, but are the cameras in mobile phones reliable enough to be used as a sensor. Obviously there would have to be a
by CJefferson 15y ago
I might be going completely off-the-wall here, but are the cameras in mobile phones reliable enough to be used as a sensor.
Obviously there would have to be a two-stage process:
1) Someone with your model of phone (iphone 4 say) figures out the properties of the camera and uploads a 'phone profile'.
2) You use that profile to calibrate your LCD screen.
I'm just curious, because I've never seen this idea done, or rejected outright. This might be because there is some really obvious reason to reject it that I am missing.
- andrewjshults 15y agoProbably not to achieve a level of accuracy better than just following an on screen calibration wizard. I say this having done studio photography where we used a GretagMacbeth Color Checker (http://www.rmimaging.com/information/colorchecker.html http://www.rmimaging.com/information/colorchecker.html) to calibrate the camera back (PhaseOne P25+ on a Hasselblad H2) beforehand. The colors are already pretty accurate straight out of the camera but when you're trying to match specific colors between the print and real life objects, ever little bit counts. I wouldn't expect a mobile phone camera module to have nearly the same level of quality control as a medium format digital back either. The other reason (and this is probably more realistic, since most people don't do the full end to end calibration) is that the mobile phone camera would pick up the ambient light as well as what you were trying to measure. Colorimeters sit right on the screen (on CRTs they used to suction cup on) to block out any ambient light.
- CJefferson 15y agoThank you, that saved me investigating if I should write such an app. Of course, selling snake oil colour calibration to iPhone users might still make money ;)