JPS6449034A - Method for deciding right or wrong of radiation field - Google Patents
Method for deciding right or wrong of radiation fieldInfo
- Publication number
- JPS6449034A JPS6449034A JP62207215A JP20721587A JPS6449034A JP S6449034 A JPS6449034 A JP S6449034A JP 62207215 A JP62207215 A JP 62207215A JP 20721587 A JP20721587 A JP 20721587A JP S6449034 A JPS6449034 A JP S6449034A
- Authority
- JP
- Japan
- Prior art keywords
- candidate areas
- wrong
- radiation field
- threshold
- possessing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title abstract 5
- 238000000926 separation method Methods 0.000 abstract 5
Abstract
PURPOSE:To properly decide whether radiation field candidate areas are right or wrong by deciding such that the candidate areas possessing separation degrees higher than a threshold are right and the candidate areas possessing separation degrees lower than said threshold are wrong. CONSTITUTION:As for radiation field candidate areas 12a, 12b and 12c, their separation degrees are calculated which are used in decision analysis regarding pre-reading picture signals in the radiation field candidate areas on a sheet 10 and those outside said candidate areas. After the separation degrees etaa, etab and etac of the candidate areas 12a, 12b and 12c are obtained, the candidate areas possessing their separation degrees eta higher than the prescribed threshold Th are decided right, whereas the candidate areas possessing degrees lower than the threshold Th are decided wrong. Thus whether the radiation field candidate areas are right or wrong can be decided properly.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62207215A JP2532883B2 (en) | 1987-08-20 | 1987-08-20 | Irradiation field correctness determination method |
US07/234,784 US4952805A (en) | 1987-08-20 | 1988-08-22 | Method of judging the presence or absence of a limited irradiation field, method of selecting a correct irradiation field, and method of judging correctness or incorrectness of an irradiation field |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62207215A JP2532883B2 (en) | 1987-08-20 | 1987-08-20 | Irradiation field correctness determination method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449034A true JPS6449034A (en) | 1989-02-23 |
JP2532883B2 JP2532883B2 (en) | 1996-09-11 |
Family
ID=16536146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62207215A Expired - Fee Related JP2532883B2 (en) | 1987-08-20 | 1987-08-20 | Irradiation field correctness determination method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2532883B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272531A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for making correct/incorrect decision on radiation irradiation field of radiograph |
JPH02272534A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for determining image point in subject image |
JP2010246778A (en) * | 2009-04-16 | 2010-11-04 | Canon Inc | Radiograph and control method therefor |
-
1987
- 1987-08-20 JP JP62207215A patent/JP2532883B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02272531A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for making correct/incorrect decision on radiation irradiation field of radiograph |
JPH02272534A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for determining image point in subject image |
JP2010246778A (en) * | 2009-04-16 | 2010-11-04 | Canon Inc | Radiograph and control method therefor |
Also Published As
Publication number | Publication date |
---|---|
JP2532883B2 (en) | 1996-09-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |