Traditional CMOS image sensor employs Bayer format as color filter array. This format allows each pixel of the CMOS image sensor to be excited by a specified wavelength of light, which includes color and infrared.

While RGB-Ir technology enables infrared only light to be passed to the IR pixel. In the RGB-Ir CFA format, several pixels had been converted to IR pixels. And the IR pixels are sensitive only to infrared light.

OMNIVISION’s RGB-Ir technology’s ability to capture both RGB and IR images in one device allows for both day and night vision capabilities, making it the ideal choice for today’s battery-operated security cameras for smart home systems.

Today’s mobile devices, PCs and notebooks are life hubs requiring high level of access security. The advanced infrared sensitivity of OMNIVISION’s RGB-Ir technology enables facial and gesture recognition.

Dual band-pass filter

• For good color accuracy

Dual focal lens

A companion ISP is needed to extract RGB and IR information separately

• Extract IR image by interpolating sensor’s R, G, B and IR signal from pixels next to it.
• Extract RGB image using the below formulas
  R’ = R – x*IR
  G’ = G – x*IR
  B’ = B – x*IR
  And R’G’B’ image is done
  *x is pre-calibrated IR removal coefficient