US5774230A
Expired / Lapsed
US
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Color image processing apparatus for color-correcting input image data using neural network
Assignee: Sharp Corp
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Filing: 1996-05-23
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Granted: 1998-06-30
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Expires: 2016-05-23
Abstract
Abstract A color image processing apparatus including a read device for reading an original image, a color correcting device for color-correcting input image data using a color-correcting neural network, and an output device for outputting color-corrected image data. The neural network with teacher data, which are in effect learning color data reflecting the visual characteristics of human eyes, using learning data produced by reading a copy image produced based on the learning color data. Accordingly, the neural network can correct colors accurately in a manner to fully reflect the visual characteristics of human eyes, thereby making the color difference between the original image and a copy of the same less noticeable.
Inventors
- 👤 Makio Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:16
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/603
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A color image processing apparatus including: read means for reading an original image; color correcting means for color-correcting input image data using a color-correcting neural network; and output means for outputting color-corrected image data; said color-correcting neural network learning using teacher data and learning data, said teacher data being learning color data produced by adding data of a first color and/or deleting data of a second color to/from data of master color samples, said first color being a color to which human eyes are highly sensitive, said second color being a color to which human eyes are less sensitive, said learning data being image data produced by said read means as said read means reads an image produced by said output means based on said learning color data.
Claim 2
Dependent Claim
128 words
A color image processing apparatus including: read means for reading an original image; color correcting means for color-correcting input image data using a color-correcting neural network; and output means for outputting color-corrected image data; said color-correcting neural network learning using teacher data and learning data, said teacher data being learning color data produced by adding data of a first color and/or deleting data of a second color to/from data of master color samples, said first color being a color to which human eyes are highly sensitive, said second color being a color to which human eyes are less sensitive, said learning data being image data produced by said read means as said read means reads an image produced by said output means based on said learning color data.
Claim 3
Dependent Claim
60 words
The color image processing apparatus as defined in claim 1, wherein said color correcting means includes a plurality of color-correcting neural networks for individual color characteristics of said input image data, so colors of the input image data are corrected using a neural network for a specific color characteristic in response to a color characteristic of the input image data.
Claim 4
Dependent Claim
67 words
The color image processing apparatus as defined in claim 1, wherein said color correcting means includes a color-correcting neural network which learns using teacher data and learning data, said teacher data being latest color-corrected image data, said learning data being input image data produced by said read means as said read means reads an image produced by said output means based on said latest color-corrected image data.
Claim 5
Dependent Claim
67 words
The color image processing apparatus as defined in claim 2, wherein said color correcting means includes a color-correcting neural network which learns using teacher data and learning data, said teacher data being latest color-corrected image data, said learning data being input image data produced by said read means as said read means reads an image produced by said output means based on said latest color-corrected image data.
Claim 6
Dependent Claim
42 words
The color image processing apparatus as defined in claim 1 further including a memory unit for storing the master color samples data and said learning color data used as said teacher data, said memory unit being connected to said color correcting means.
Claim 7
Dependent Claim
37 words
The color image processing apparatus as defined in claim 1, wherein said color correcting means converts the input image data in the form of a RGB signal into one of a CMY signal and a CMYK signal.
Claim 8
Dependent Claim
32 words
The color image processing apparatus as defined in claim 1, wherein said color correcting means includes a portrait neural network and a landscape neural network in said plurality of color-correcting neural networks.
Claim 9
Dependent Claim
49 words
The color image processing apparatus as defined in claim 7 further including an image selecting device for judging whether an original image is a portrait or a landscape, and said image selecting device for selecting one of said portrait neural network and landscape neural network based on said judgement.
Claim 10
Dependent Claim
32 words
The color image processing apparatus as defined in claim 1, wherein said color correcting means includes a general neural network and a user's neural network in said plurality of color-correcting neural networks.
Claim 11
Dependent Claim
29 words
The color image processing apparatus as defined in claim 9 further including a learning device for supplying the learning data and the teacher data to said user's neural network.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |