Abstract: A color filter allows a light signal to pass through by each pixel and be incident on an imaging device. The light signal is inputted through a lens and including one of plural different spectral components. The plural different spectral components include a first spectral component which has a widest frequency bandwidth among the plural different spectral components, a second spectral component corresponding to a predetermined frequency band close to a frequency that causes no chromatic aberration of the lens, and a third spectral component expressed in terms of a linear sum of a value resulting from multiplying the first spectral component by a first weighting factor and a value resulting from multiplying the second spectral component by a second weighting factor.

Abstract: An image processing apparatus and an image processing method are disclosed by which an image correction process for a false color such as a purple fringe can be executed efficiently while excessive reduction of the saturation is prevented to produce image data of a high quality. A saturation reduction rate corresponding to each pixel is calculated, and saturation reduction of the pixel is executed based on the saturation reduction rate. Then, saturation correction is executed so that the difference between the hue of the pixel whose saturation has been reduced and a surrounding reference pixel may be reduced. Further, a surrounding pixel to be referred to in the saturation correction process is selected along a scanning line.

Abstract: A smoothing calculator determines a smoothed mean luminance value C1×?(t)+(1?C1)??(t?1) based on a mean luminance value ?(t) input at time t and a smoothed mean luminance value ??(t?1) read at time (t?1) from a buffer, and outputs the smoothed mean luminance value C1×?(t)+(1?C1)??(t?1) as the smoothed mean luminance value ?(t) of the mean luminance value ?(t). Coefficient C1 is greater than 0 but smaller than 1. Gradation conversion responsive to luminance variation from frame to frame in a moving image is thus achieved.