公开(公告)号：JPH08335271A

公开(公告)日：1996-12-17

申请号：JP9685296

申请日：1996-04-18

Applicant: ARCH DEV CORP

Inventor： DOI KUNIO ,  SHIN UEI SHIYUU ,  KATSURAGAWA SHIGEHIKO ,  MORISHITA JIYUNJI

IPC: A61B6/00 ,  G06T1/00 ,  G06T7/00 ,  G06T7/60

Abstract: PROBLEM TO BE SOLVED: To provide a new and improved method for automatic detection of the exact boundary of a chest part in a digitized chest part X-ray picture. SOLUTION: This is a computerized method for detecting and characterizing a disease by a picture obtained from a chest part X-ray picture. The picture in the chest part X-ray picture is processed for deciding the boundary of the chest part including the edge of a lung upper end, right and left chest part edges, and right and left half diaphragm edges. An organizational scale including the RMS change of pixel values in a concerned area is converted into relative exposure, and a system noise component which is present in a system used for the generation of the picture is compensated. An organizational index and a geometrical pattern index are generated. Also, the histogram of the index is generated, and inputted to a learned artificial neural network for classifying the normality and abnormality of the picture to be applied.