1
Takeshi Funahashi, Masamitsu Ishida: Irradiation field recognizing method, and method of adjusting image processing conditions using the same. Fuji Photo Film, Sughrue Mion Zinn Macpeak & Seas, August 22, 1989: US04859850 (17 worldwide citation)

In a method of recognizing an irradiation field, sample image signals at a picture element string extending from an edge of a recording region towards the center thereof are extracted from image signals detected from a recording medium. Changes among image density levels represented by the sample im ...


2
Takeshi Funahashi: Irradiation field recognizing method, and method of adjusting image processing conditions using the same. Fuji Photo Film, Sughrue Mion Zinn Macpeak & Seas, November 13, 1990: US04970393 (13 worldwide citation)

In a method of recognizing an irradiation field, image signals at their respective positions on a recording medium carrying a radiation image stored thereon are detected from image information obtained by image read-out. A difference image constituted by difference values between the image signals i ...