04967079 is referenced by 23 patents and cites 2 patents.

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 borne by the stimulable phosphor sheet. The irradiation field is recognized by obtaining digital image data for a plurality of positions on the stimulable phorphor 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.

Title
Method of recognizing irradiation field
Application Number
7/182685
Publication Number
4967079
Application Date
April 18, 1988
Publication Date
October 30, 1990
Inventor
Kazuo Shimura
Kanagawa
JP
Agent
Sughrue Mion Zinn MacPeak & Seas
Assignee
Fuji Photo Film
JP
IPC
H04N 5/32
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