Patent Document ID: 20120099007
Application ID: 13238845
Patent Status: 0

Claim One:
1. An image processing apparatus comprising: obtaining unit configured to obtain a black image which is captured in a light-shielded state and contains streak-like fixed pattern noise; first reduction unit configured to apply, to the black image obtained by said obtaining unit for each line of the black image in a first direction, a cyclic type filter for reducing noise in the first direction, and for weighted-adding, in a pixel order in the first direction, a pixel value of a pixel of interest and a pixel value of at least one pixel to which the cyclic type filter has been applied before the pixel of interest; and first output unit configured to delete, from the black image to which said first reduction unit has applied the cyclic type filter, lines in a second direction intersecting the first direction by a group delay of the cyclic type filter, generating an image having a line count corresponding to the group delay by using a final line in the second direction in the image from which the lines corresponding to the group delay have been deleted, adding the generated image to the image from which the lines corresponding to the group delay have been deleted, and outputting a resultant image.