Image capturing apparatus, image processing apparatus, image processing method, and image processing program

An image processor which is configured to generate a restored image by reducing a motion blur that has been induced by a camera shake from an image that has been captured by an image capture device, the processor comprising:

• an image getting section which gets the image and information that affects the degree of the motion blur of the image;
• a blur kernel determining section which determines a blur kernel that defines the camera-shake-induced motion blur of the image, the blur kernel being a coefficient matrix representing a point spread function;
• and
• an image restoration section which generates the restored image by reducing the camera-shake-induced motion blur from the image using the blur kernel that has been determined, and
• wherein the blur kernel determining section sets the size of the blur kernel by reference to the information that affects the degree of the blur of the image, the size of the blur kernel being the number of elements of the coefficient matrix, and
• wherein the blur kernel determining section changes the size of the blur kernel according to an exposure time.

A computer program, stored on a non-transitory computer-readable storage medium, to be executed by a computer which is designed to generate a restored image by reducing a motion blur that has been induced by a camera shake from an image that has been captured by an image capture device, the program being defined to make the computer perform the steps of:

• getting the image and information that affects the degree of the motion blur of the image;
• setting the size of a blur kernel that defines the camera-shake-induced motion blur of the image by reference to the information that affects the degree of the motion blur of the image and changing the size of the blur kernel according to an exposure time, the blur kernel being a coefficient matrix representing a point spread function, the size of the blur kernel being the number of elements of the coefficient matrix;
• determining the blur kernel;
• and
• generating the restored image by reducing the camera-shake-induced motion blur from the image using the blur kernel that has been determined.

An image processing method for generating a restored image by reducing a motion blur that has been induced by a camera shake from an image that has been captured by an image capture device, the method comprising the steps of:

• getting the image and information that affects the degree of the motion blur of the image;
• setting the size of a blur kernel that defines the camera-shake-induced motion blur of the image by reference to the information that affects the degree of the motion blur of the image and changing the size of the blur kernel according to an exposure time, the blur kernel being a coefficient matrix representing a point spread function, the size of the blur kernel being the number of elements of the coefficient matrix;
• determining the blur kernel;
• and
• generating the restored image by reducing the camera-shake-induced motion blur from the image using the blur kernel that has been determined.