US5375000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for generating representation of an image from a transparency
Assignee: FFEI Ltd
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Filing: 1991-10-22
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Granted: 1994-12-20
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Expires: 2011-10-22
Abstract
Abstract A method of generating a representation of an image comprises scanning a film (2) carrying an image to which the film has been exposed to obtain signals (4,5,6) representing the color component content of the recorded image. During exposure of the image its appearance has been modified in accordance with a function characteristic of the film. The signals obtained are modified with a function (11,10,8) constituting the inverse of the film characteristic function to compensate.
Inventors
- 👤 Andrew R. Ray
- 👤 Robert W. Rayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:32
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A method of generating a representation of an image, said method comprising: scanning a film carrying an image to which said film has been exposed, and wherein during exposure the appearance of said image has been modified in accordance with a characteristic function of said film; obtaining signals representing the colour component content of said image recorded on said film; modifying said signals with a function constituting the inverse of said characteristic function of said film to produce a compensated image; and subsequently applying a chosen film characteristic function to the compensated image.
Claim 2
Independent Claim
93 words
A method of generating a representation of an image, said method comprising: scanning a film carrying an image to which said film has been exposed, and wherein during exposure the appearance of said image has been modified in accordance with a characteristic function of said film; obtaining signals representing the colour component content of said image recorded on said film; modifying said signals with a function constituting the inverse of said characteristic function of said film to produce a compensated image; and subsequently applying a chosen film characteristic function to the compensated image.
Claim 3
Dependent Claim
14 words
A method according to claim 1, wherein said scanned film is a colour film.
Claim 4
Dependent Claim
71 words
Apparatus for generating a representation of an image comprising: scanning means to scan a film carrying an image so as to obtain signals representing the colour component content of said image recorded on said film; modifying means to modify said signals with a function constituting the inverse of a film characteristic function to produce a compensated image; and means for subsequently applying a chosen film characteristic function to the compensated image.
Claim 5
Dependent Claim
71 words
Apparatus for generating a representation of an image comprising: scanning means to scan a film carrying an image so as to obtain signals representing the colour component content of said image recorded on said film; modifying means to modify said signals with a function constituting the inverse of a film characteristic function to produce a compensated image; and means for subsequently applying a chosen film characteristic function to the compensated image.
Claim 6
Dependent Claim
31 words
Apparatus according to claim 3 wherein said modifying means for modifying said signals obtained by scanning said image comprise a log amplifier and wherein said signals are converted to density signals.
References Cited (Backward Citations)
US4418358A
Cited
US4635101A
Cited
US4970584A
Cited
US4866513A
Cited
EP0255127A2
Cited
US4812879A
Cited
US4825297A
Cited
US4849775A
Cited
US5018085A
Cited
US5166803A
Cited
US5150207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-19 | 1998-06-20 | 1998-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-19 | 2002-06-20 | 2002-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-19 | 2006-06-20 | 2006-12-20 | $7700.00 | Window Closed / Lapsed |