Title:
【発明の名称】放射線照射野認識方法
Document Type and Number:
Japanese Patent JP2596744
Kind Code:
B2
Abstract:
A stimulable phosphor sheet bearing radiation image information recorded thereon by limitation of the irradiation field is exposed to stimulating rays and light emitted by the stimulable phosphor sheet upon stimulation is photoelectrically read out to obtain image signals representing the radiation image information born by the stimulable phosphor sheet. The irradiation field is recognized by obtaining digital image data for a plurality of positions on the stimulable phosphor sheet from the image signals, detecting prospective edge points, which are considered to be edge portions of the irradiation field on the stimulable phosphor sheet, on the basis of the image data of positions radially outwardly arranged in a plurality of directions from a predetermined point inside the irradiation field, and recognizing as the irradiation field the region surrounded by the lines passing through the prospective edge points.
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Inventors:
Kazuo Shimura
Application Number:
JP9363387A
Publication Date:
April 02, 1997
Filing Date:
April 16, 1987
Export Citation:
Assignee:
Fuji Photo Film Co., Ltd.
International Classes:
A61B6/00; G06T1/00; H04N1/387; G03B42/02; H04N1/407; G06V10/24; (IPC1-7): G03B42/02; A61B6/00; G06T1/00
Domestic Patent References:
| JP6139039A | ||||
| JP5245954A |
Attorney, Agent or Firm:
Yanagida Seishi