Interpolation processing apparatus and recording medium having interpolation processing program recorded therein

A recording medium that records an interpolation processing program to be executed by a computer, said interpolation program comprising:

• a procedure in which a color component composition of a color image expressed through a colorimetric system constituted of a predetermined plurality of color components are identified, said color component composition representing hue information of the color image;
• a procedure in which one type of interpolation processing that corresponds to the color component composition that has been identified is selected from a plurality of types of interpolation processing corresponding to color component compositions of the color image;
• and
• a procedure in which the interpolation processing that has been selected is executed and an interpolation quantity corresponding to a value of a color component missing in each pixel is determined for the color image.

An electronic camera comprising:

• an image-capturing device that has a plurality of pixels and generates an image by capturing an image of a subject;
• color filters that are provided in correspondence to a plurality of pixels of said image-capturing device and are constituted by adopting a colorimetric system constituted of a plurality of color components;
• an interpolation processing device that performs interpolation processing on a color image generated by said color filters and said image-capturing device to determine an interpolation quantity corresponding to a value of a missing color component in each pixel;
• and
• a color composition identification device that identifies a color component composition of the color image, said color component composition representing hue information of the color image, wherein:
• said interpolation processing device is capable of performing a plurality of types of interpolation processing in correspondence to color component compositions of the color image, selects a type of interpolation processing that corresponds to the color component composition identified by said color composition identification device and performs the type of interpolation processing that has been selected on the color image.

An interpolation processing apparatus comprising:

• an interpolation processing unit that performs interpolation processing on a color image expressed through a colorimetric system constituted of a predetermined plurality of color components to determine an interpolation quantity corresponding to a value representing a missing color component in each pixel;
• and
• a color composition identification unit that identifies a color component composition of the color image, said color component composition representing one of at least a single-hue image, a color image other than the single-hue image, a gray image and a color image other than the gray image, wherein:
• said interpolation processing unit is capable of performing a plurality of types of interpolation processing in correspondence to color component compositions of the color image, selects a type of interpolation processing corresponding to the color component composition identified by said color composition identification unit and performs the type of interpolation processing that has been selected on the color image.