(19)
(11)EP 2 154 880 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
21.05.2014 Bulletin 2014/21

(43)Date of publication A2:
17.02.2010 Bulletin 2010/07

(21)Application number: 09167729.4

(22)Date of filing:  12.08.2009
(51)International Patent Classification (IPC): 
H04N 5/217(2011.01)
(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30)Priority: 12.08.2008 JP 2008207787
07.04.2009 JP 2009092987

(71)Applicant: CANON KABUSHIKI KAISHA
Ohta-ku Tokyo 146-8501 (JP)

(72)Inventor:
  • Ikedo, Hideki
    Ohta-ku, Tokyo (JP)

(74)Representative: Derham, Cassandra Virginie 
Canon Europe Ltd 3 The Square Stockley Park Uxbridge Middlesex
UB11 1ET
UB11 1ET (GB)

  


(54)Image processing device, image sensing apparatus, image processing method, and image processing program


(57) An image processing device is comprised of: a frequency component resolution section (110) for resolving an image obtained from an image sensor having a light-shielded pixel area and a non-light-shielded pixel area into two or more frequency components; a noise amount calculation section (1231a, 1232a) for calculating a noise amount for the frequency component based on the frequency component in the light-shielded pixel area; a noise suppression section (1233, 1234) for suppressing the noise component for the frequency component in the non-light-shielded pixel area according to the noise amount that has been calculated by the noise amount calculation section; and a frequency component synthesis section (120) for synthesizing the frequency component that has been resolved by the frequency component resolution section to thereby form an image.







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Search report