IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD

WIPO Patent Application WO/2024/075570

A1

An image processing device 1 comprises a processing unit 11 and a training unit 12, and performs noise reduction processing on an image 23 of interest. The processing unit 11 inputs an input image 21 to a CNN and outputs an output image 22 from the CNN. The training unit 12 uses an evaluation function based on the output image 22 and the image 23 of interest to train the CNN on the basis of the value of the evaluation function. The evaluation function includes an error evaluation term that represents an evaluation value related to an error between the output image and the image of interest, and a regularization term that represents an evaluation value related to the difference in pixel value between adjacent pixels in the output image. The image processing device 1 repeats the processing in the processing unit 11 and the processing in the training unit 12 multiple times, and the output image 22 obtained after a certain number of repetitions is taken as a noise-reduced image. Thus, an image processing device and an image processing method are achieved that make it possible to suppress image quality degradation due to CNN overlearning in noise reduction processing using DIP technology.

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ONISHI YUYA (JP)
HASHIMOTO FUMIO (JP)

PCT/JP2023/034735

April 11, 2024

September 25, 2023

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HAMAMATSU PHOTONICS KK (JP)

G06T5/70; A61B5/055; A61B6/03; G01T1/161; G06T1/00; G06T1/40

HASEGAWA Yoshiki et al. (JP)

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