A correlative coefficient multiplying (CCM) method for chrominance moire reduction in single-chip color video cameras

A signal processing method for chrominance moire reduction in images from a single-chip color video camera has been developed. This method (correlative coefficient multiplying, CCM) assumes the correlation of luminance amplitude in an image between adjacent pixels. A unique feature of the CCM method is that the color signals are interpolated by using another color signal from an adjacent pixel and multiplying by a correlative coefficient that relates to the ratio of the low-frequency component of those color signals. It produces excellent-quality video images with reduced chrominance moire and high resolution, compared to the conventional method using an optical low-pass filter. The results of experiments completed using computer simulation are described