Interpolation

The art of finding hidden color information


By itself, pixel "A", only reads blue information. We want to know the full-color value of this spot on the sensor.

Nine sensor pixels

• If we look at the red values at B, C, D and E, we can take an average to get a red value for A

• If we look at the green values at f, g, h, and i, we can take an average to get a green value for A

By combining the interpolated red and green values for "A" with the actual, measured blue value, we can generate full color information. This process is called INTERPOLATION (and the actual mathematics used is much more complex than the simple "averaging" I've described here).

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