Imaging apparatus, high frequency component detection circuit, high frequency component detection method and computer program product

A method of detecting a high frequency component included in a video signal, comprising the steps of:

• acquiring a group of a predetermined number of pixels including a focused pixel and pixels surrounding said focused pixel with respect to each of pixels constituting said video signal;
• rearranging the pixels constituting said group to be arrayed in the order of luminance values;
• determining the luminance value of the pixel positioned at the center in the rearranged order;
• outputting said pixel positioned at the center among the rearranged pixels arrayed in said order of luminance values as said focused pixel;
• and
• detecting a high frequency component included in the video signal based on the output from said filter.

A computer program product, embodied on a non-transitory computer readable storage medium, causing a computer to execute processing of:

• detecting a high frequency component included in a video signal,
• acquiring a group of a predetermined number of pixels including a focused pixel and pixels surrounding said focused pixel with respect to each of pixels constituting said video signal,
• rearranging the pixels constituting said group to be arrayed in the order of luminance values,
• determining the luminance value of the pixel positioned at the center in the rearranged order,
• outputting said pixel positioned at the center among the rearranged pixels arrayed in said order of luminance values as said focused pixel, and
• detecting a high frequency component included in the video signal based on an output from said filter.