Camera: convert color into text

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lfmax223

Camera: convert color into text

in General Discussion • Other • 2 years ago

Hi guys,

For my networking project I am creating a new 'physical layer' in which two computers use their camera to read eachother's screen and create a back and forth text communication.

I will essentially be taking an input string and converting it to a series of different colors based on the different characters of the word or sentence. I am trying to figure out a way to map each ascii character to a color that will be easily distinguishable by a webcam at about 8 feet away.

I'm looking to see if anyone has a creative way to map the RGB values of a color to an ascii character. I have tried using examplecolor.r() to ascii where the red value determines the ascii character, but the variations of red (or blue/green) detected over a webcam varies too much depending on lighting, etc for it to be consistent.

Any help is greatly appreciated!

Thanks,
-Max

Replies(1)

PhiLho

Re: Camera: convert color into text

2 years ago

Since having a screen with one color displayed / filmed isn't reliable (too many nuances, non-reliable external lighting, approximate webcam rendering, etc.), you can use less subtle colors but several of them.
For example, use, say, height colors (red, green, blue, yellow, magenta, cyan, white, black) and four quadrants.
If I count correctly, that's 8x8x8x8 possibilities. Perhaps too much. Reduce to red, green, blue, white, black (or other colors that seems reliable experimentally), that's 5x5x5x5 ie. 625 combinations. With 3 colors, you have 81 combinations, enough to cover a good deal of Ascii chars.

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