Title:
CHEST X-RAY IMAGE TONE SCALE CONVERSION METHOD, IMAGE TONE SCALE CONVERSION PROGRAM, IMAGE TONE SCALE CONVERSION DEVICE, SERVER DEVICE, AND CONVERSION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/220825
Kind Code:
A1
Abstract:
A chest X-ray image tone scale conversion method wherein a computer of an image tone scale conversion device for converting the tone scale of a chest X-ray image of interest to be interpreted acquires the chest X-ray image of interest (S50), uses a model, which has been machine-learned beforehand, to detect in the chest X-ray image of interest a structure containing a line structure comprising a first line-shaped region having a brightness different from that of the surroundings and visualized by projecting a plurality of anatomical structures with different X-ray transmissivity, or, a second line-shaped region visualized by projecting an anatomical structure including a hairline or a wall of a bronchus or the trachea (S100), extracts a pixel set corresponding to a region in the vicinity of the structure, generates a contrast conversion formula for histogram smoothing using a histogram of the pixel set (S500), and uses the contrast conversion formula to perform brightness conversion for each pixel value of the entire chest X-ray image of interest (S700).
Inventors:
KONDO KENJI
OZAWA JUN
KIMURA HIROHIKO
ITOH HARUMI
FUJIMOTO SHINICHI
OZAWA JUN
KIMURA HIROHIKO
ITOH HARUMI
FUJIMOTO SHINICHI
Application Number:
PCT/JP2019/015880
Publication Date:
November 21, 2019
Filing Date:
April 12, 2019
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
A61B6/00; G06T1/00; G06T5/40
Foreign References:
| JP2012228407A | 2012-11-22 | |||
| JP2018064627A | 2018-04-26 | |||
| JP2010259540A | 2010-11-18 | |||
| JP2018000312A | 2018-01-11 | |||
| JP2017018339A | 2017-01-26 |
Other References:
CODEZINE WEB, 7 December 2005 (2005-12-07), Retrieved from the Internet
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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