(19)
(11)EP 3 576 049 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
04.03.2020 Bulletin 2020/10

(43)Date of publication A2:
04.12.2019 Bulletin 2019/49

(21)Application number: 19177508.9

(22)Date of filing:  30.05.2019
(51)Int. Cl.: 
G06T 5/00  (2006.01)
(84)Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 31.05.2018 US 201862704008 P
25.01.2019 US 201916258396

(71)Applicant: Canon Medical Systems Corporation
Tochigi 324-0036 (JP)

(72)Inventors:
  • CHAN, Chung
    Tochigi 324-0036 (JP)
  • ZHOU, Jian
    Tochigi 324-0036 (JP)
  • ASMA, Evren
    Tochigi 324-0036 (JP)

(74)Representative: Moreland, David 
Marks & Clerk LLP Aurora 120 Bothwell Street
Glasgow G2 7JS
Glasgow G2 7JS (GB)

  


(54)AN APPARATUS FOR DENOISING AN IMAGE, A METHOD FOR DENOSING AN IMAGE AND A COMPUTER READABLE STORAGE MEDIUM


(57) An apparatus according to an embodiment includes a memory and processing circuitry. The processing circuitry receives an image, the image comprising voxels arrayed in three spatial dimensions, acquires from the memory a first network and a second network, denoises the received image using the first network and the second network to produce a denoised output image. Each of the first network and the second network comprises weighting coefficients of connections between neuronal nodes of respective layers of a plurality of layers between an input layer and an output layer of a neural network. The first network is adapted to receive first two-dimensional (2D) slices of an image provided at its input layer, the first 2D slices being perpendicular to a first direction. The second network is adapted to receive second two-dimensional (2D) slices of an image provided at its input layer, the second 2D slices being perpendicular to a second direction, which is a different direction than the first direction.