Patent ID: 9036032
Filing Date: 2015-05-19
Classification: H04N

Abstract:
1. An image capture device which generates a restored image by reducing a motion blur that has been induced by a camera shake during shooting, the device comprising: an image sensor which captures a first image and a second image, which is obtained in a shorter exposure time than the first image, in response to a single shooting instruction from a user; and an image processor which performs restoration processing on the first and second images that have been captured by the image sensor, the image processor including: an image synthesizing section which synthesizes the first and second images to generate a synthetic deteriorated image; a blur kernel determining section which determines a blur kernel that defines the camera-shake-induced motion blur of the first and second images that have been captured by the image sensor, wherein the blur kernel is a coefficient matrix with a size of N×N, N being an integer N, N≧3, which represents a point spread function; and an image restoration section which generates a restored image from the synthetic deteriorated image by preforming a deconvolution operation using the blur kernel that has been determined, wherein the restored image has a reduced blur as compared to the first captured image, and wherein the blur kernel determining section sets the size of the blur kernel depending on the sum of the exposure times in which the first image and the second image are captured, respectively, and the blur kernel determining section increases the size of the blur kernel as the sum of the exposure times becomes longer.