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1. (WO2018043575) IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND PROGRAM

Pub. No.:    WO/2018/043575    International Application No.:    PCT/JP2017/031194
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Aug 31 01:59:59 CEST 2017
IPC: A61B 6/03
A61B 5/055
A61B 8/14
G01T 1/161
G06T 1/00
G06T 5/50
G06T 7/00
Applicants: CANON KABUSHIKI KAISHA
キヤノン株式会社
Inventors: TANAKA Toru
田中 亨
SATOH Kiyohide
佐藤 清秀
ISHIKAWA Ryo
石川 亮
Title: IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND PROGRAM
Abstract:
The present invention makes it possible to leave necessary signals on a difference image and to reduce noise. An image processing device comprises: a search area size calculation means for calculating a search area size on the basis of a pixel size of a first image and/or a second image; a position acquisition means for acquiring a position of interest on the first image, and a corresponding position corresponding to the position of interest on the second image; a search area setting means for setting a search area of the search area size around the corresponding position on the second image; and a difference means for determining a difference value corresponding to the position of interest on the basis of a density value at the position of interest on the first image, and density values at a plurality of positions within the search area on the second image.