Patent US5805741A successfully refreshed from Google Patents.
US5805741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing method and system using harmonic distortion
Assignee: Fujifilm Business Innovation Corp
•
Filing: 1995-04-19
•
Granted: 1998-09-08
•
Expires: 2015-04-19
Abstract
Abstract An image processing method for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The method comprises the steps of superposing a harmonic component H of the image signal G in response to a level of the image signal G on the image signal G and sending the image signal G on which the harmonic component H is superposed to the image output unit 19. An image processing system for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The system comprises harmonic component generation means 3 for generating a harmonic component H corresponding to the image signal G and harmonic component superposing means 34 for superposing the harmonic component H on the image signal G. Thereby, it is provided an image processing method and system for providing a sharp image good in gradation characteristic and granularity in a wide dynamic range.
Inventors
- 👤 Koichiro Shinohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:03
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/409; H04N1/4092; G; G06; G06T; G06T5/00; G06T5/10; G06T5/90; G06T2207/00; G06T2207/10; G06T2207/10024
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including a discrete Laplacian filter and look-up tables for generating the harmonic component; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 2
Dependent Claim
89 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including a discrete Laplacian filter and look-up tables for generating the harmonic component; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 3
Dependent Claim
32 words
The image processing system as claimed in claim 1 wherein said harmonic component generation means and said harmonic component superposing means generate and superpose a third harmonic component as the harmonic component.
Claim 4
Dependent Claim
91 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including spatial frequency adjustment means and signal level conversion means for generating the harmonic component; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 5
Dependent Claim
91 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including spatial frequency adjustment means and signal level conversion means for generating the harmonic component; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 6
Dependent Claim
32 words
The image processing system as claimed in claim 3 wherein said harmonic component generation means and said harmonic component superposing means generate and superpose a third harmonic component as the harmonic component.
Claim 7
Dependent Claim
28 words
The image processing system as claimed in claim 3, said harmonic component generation means including a discrete Laplacian filter and look-up tables and for generating the harmonic component.
Claim 8
Dependent Claim
87 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including spatial frequency component extraction means and harmonic component calculation means; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 9
Dependent Claim
87 words
An image processing system for converting a color image signal through an image input into an image signal applicable to an image output unit, said system comprising: harmonic component generating means for generating a harmonic component of the color image signal input through said image input unit, said harmonic component generating means including spatial frequency component extraction means and harmonic component calculation means; and harmonic component superposing means for superposing the harmonic component, in response to a level of the color image signal, on the image signal.
Claim 10
Dependent Claim
30 words
The image processing system as claimed in claim 6 wherein said harmonic component generation means further includes a discrete Laplacian filter and look-up tables and for generating the harmonic component.
Claim 11
Dependent Claim
32 words
The image processing system as claimed in claim 6 wherein said harmonic component generation means and said harmonic component superposing means generate and superpose a third harmonic component as the harmonic component.
Claim 12
Dependent Claim
93 words
An image processing method for converting a color image signal through an image input into an image signal applicable to an image output unit, the method comprising the steps of: generating a harmonic component of the color image signal using a discrete Laplacian filter and look-up tables; superposing the harmonic component of the color image signal input through said image input unit on the image signal in response to a level of the color image signal; and sending the image signal on which the harmonic component is superposed to said image output unit.
Claim 13
Dependent Claim
93 words
An image processing method for converting a color image signal through an image input into an image signal applicable to an image output unit, the method comprising the steps of: generating a harmonic component of the color image signal using a discrete Laplacian filter and look-up tables; superposing the harmonic component of the color image signal input through said image input unit on the image signal in response to a level of the color image signal; and sending the image signal on which the harmonic component is superposed to said image output unit.
Claim 14
Dependent Claim
38 words
The image processing method of claim 9, wherein the step of generating a harmonic component includes the substeps of extracting a spatial frequency from the color image signal; and calculating the harmonic component of the color image signal.
Claim 15
Dependent Claim
24 words
The image processing method of claim 9, wherein the step of superposing the harmonic component includes superposing a third harmonic as the harmonic component.
References Cited (Backward Citations)
US4630107A
Cited
US5251267A
Cited
US5245432A
Cited
US5166810A
Cited
JPH03234178A
Cited
EP0451831A2
Cited
US5247588A
Cited
US5526446A
Cited
US5392137A
Cited
US5557429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |