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Patent Searching and Data


Title:
画像処理装置
Document Type and Number:
Japanese Patent JP7383371
Kind Code:
B2
Abstract:
An image processing apparatus acquires a first pixel size and a second pixel size that are pixel sizes in a predetermined axis direction of a first image and a second image captured at different points in time, respectively, determines whether the first pixel size and second pixel size differ from each other, and decides, if the first pixel size differs from the second pixel size, a size in a predetermined axis direction of a comparison area based on a larger one of the first pixel size and the second pixel size. The comparison area includes a plurality of gray levels, and is compared to a gray level of a position of interest in one of the first and second image, and the comparison area existing in the other of the first and second image, different from the one image.

Inventors:
Toru Tanaka
Kiyohide Satoh
Ryo Ishikawa
Application Number:
JP2018034984A
Publication Date:
November 20, 2023
Filing Date:
February 28, 2018
Export Citation:
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Assignee:
Canon Inc
International Classes:
G06T1/00; A61B6/03; G06T5/50
Domestic Patent References:
JP201838815A
JP201946057A
Other References:
田中 亨 他、「Thick-slice CT画像における経時差分画像のアーチファクト低減手法」、Medical Imaging Technology、Vol. 35、No.5、2017年11月29日、pp. 257-267
板井喜則 他、「ボクセルマッチング法による経時差分画像上のアーチファクトの低減法」、電子情報通信学会技術研究報告 MI 医用画像、Vol. 107、No. 461、2008年1月25日、pp. 281-284
杉元藍子 他、「胸部単純X線画像におけるピクセルマッチング法を用いた経時的差分画像法の開発」、日本放射線技術学会雑誌、Vol.69、No. 8、2013年8月31日、pp. 855-863
Attorney, Agent or Firm:
Takuma Abe
Sougo Kuroiwa