Image correction according to transmission characteristics of image sensing optical system

An image processing method for processing an image sensed by an image sensing unit which includes an optical system and an image sensing element for converting a subject image formed by said optical system into an electric signal, the image processing method comprising:

• reading relative positional information of an optical axis of said optical system and a reference point of an effective range of said image sensing element and a function representing transmission characteristics of said optical system from a storage unit;
• calculating a correction value for correcting an image sensed by said image sensing unit using the read relative positional information and the function;
• and
• correcting the image sensed by said image sensing unit based upon the correction value.

An image processing apparatus for processing an image sensed by an image sensing unit which includes an optical system and an image sensing element for converting a subject image formed by said optical system into an electric signal, the image processing apparatus comprising:

• an acquisition unit adapted to acquire positional deviation information in a manufacturing process between said optical system and said image sensing element;
• a storage unit adapted to store image correction values in advance;
• and
• an image correction unit adapted to correct the image based upon said positional deviation information in a manufacturing process and said image correction value.

An image processing apparatus for processing an image sensed by an image sensing unit which includes an optical system and an image sensing element for converting a subject image formed by said optical system into an electric signal, the image processing apparatus comprising:

• a storage unit adapted to store a first group of correction data for correcting an image sensed by said image sensing unit on the basis of positional deviation information in a manufacturing process between said optical system and said image sensing element;
• and
• a calculation unit adapted to calculate a plurality of second groups of correction data corresponding to a light amount of a object at a time of image sensing operation using said first group of correction data,
• wherein a position corresponding to a minimum value of said first group of correction data in an effective range of said image sensing element is off the center of the effective range.

An image processing method for processing an image sensed by an image sensing unit which includes an optical system and an image sensing element for converting a subject image formed by said optical system into an electric signal, the image processing method comprising:

• acquiring positional deviation information in a manufacturing process between said optical system and said image sensing element;
• storing image correction values in advance;
• and
• correcting the image based upon said positional deviation information in a manufacturing process and said image correction values.