METHOD FOR ENHANCING SHARPNESS OF COLOR IMAGE

摘要

A method for enhancing the sharpness of a color image is provided to improve the chromatic aberration problem and the deterioration of an image generated when using a low cost of lens such as a plastic lens. A process for dividing color images comprising plural pixels into plural blocks is performed(S21). A process for dividing the pixels within the divided blocks into two clusters by clustering is performed(S22). Thereafter, a process for correcting the color tone value of pixels is performed(S23) so that the distance between pixels belongs to two clusters is increased. The processes are performed by a sharpness improvement member. The color image processed by a sharpness improvement algorithm through the sharpness improvement member is processed by a DCF filtering manner additionally through a DCF filtering member.