False color signal reduction method for single chip color video cameras

摘要

Video devices such as VCRs have been increasingly digitalized and it is necessary to improve the picture quality of cameras to cope with digitalized video devices. For the single-chip color video cameras with a line sequential color difference signals system, which are primarily used at present as the camera units for home-use and ITV (industrial television), the authors have studied a luminance signal generation method for low attenuation of high-frequency components using the correlation of the ratio between the chrominance signal and the luminance signal in localized image areas. Using a luminance signal with low attenuation of the high-frequency components, the writers have studied a method of reducing the false color signal generated in single-chip color video cameras through the application of image simulation, and have obtained a favorable result as reported in the present paper.