Patent US5296946A successfully refreshed from Google Patents.
US5296946A
Expired / Lapsed
US
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Image processing apparatus with color conversion means
Assignee: Canon Inc
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Filing: 1992-08-31
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Granted: 1994-03-22
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Expires: 2012-08-31
Abstract
Abstract There is provided a color image processing apparatus in which, by making use of an image reading apparatus of a digital full-color copying apparatus, the designated color to be obtained after conversion is input and stored as component ratio of color-separated image data, and monochromatic image data proportional to the gradation levels, e.g., density, lightness, luminance and so forth are obtained from the color separated image data produced from the original image, the monochromatic image data thus obtained being converted into the color separation data corresponding to the component ratio of the designated color to be obtained after conversion, thereby making it possible to preserve the hue of the designated color and to effect color conversion to the designated color having gradation proportional to the gradation of the original image.
Inventors
- 👤 Toshihiro Kadowaki
- 👤 Tetsuya Ohnishi
- 👤 Koichi Katoh
- 👤 Yasumichi Suzuki
- 👤 Toshio Honma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:35
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/62
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
149 words
An image processing apparatus comprising: hue appointing means for appointing a hue to be obtained after a conversion processing of original image data having a gradation; area appointing means for appointing an area of an original image without setting a range of color to be converted, the original image in the appointed area having a plurality of colors; and conversion means for converting the original image data within the area appointed by said area appointing means into converted image data having the same hue appointed by said hue appointing means so that the entire color of the original in the appointed area will be converted into an image having a density level proportional to a density level of the original image data and the same hue, wherein said hue appointing means and said area appointing means comprise a common operating means for manually appointing the hue and the area.
Claim 2
Dependent Claim
149 words
An image processing apparatus comprising: hue appointing means for appointing a hue to be obtained after a conversion processing of original image data having a gradation; area appointing means for appointing an area of an original image without setting a range of color to be converted, the original image in the appointed area having a plurality of colors; and conversion means for converting the original image data within the area appointed by said area appointing means into converted image data having the same hue appointed by said hue appointing means so that the entire color of the original in the appointed area will be converted into an image having a density level proportional to a density level of the original image data and the same hue, wherein said hue appointing means and said area appointing means comprise a common operating means for manually appointing the hue and the area.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein said hue appointing means is arranged to appoint one of plural hues which have been beforehand stored.
Claim 4
Dependent Claim
53 words
An apparatus according to claim 1, further comprising: image data supply means for supplying the original image data, wherein said hue appointing means is arranged so as to appoint the hue to be obtained after conversion, by appointing a particular hue in the original image data supplied by said image data supply means.
Claim 5
Dependent Claim
16 words
An apparatus according to claim 3, wherein said image data supply means comprises a flat-bed scanner.
Claim 6
Dependent Claim
14 words
An apparatus according to claim 4, wherein said flat-bed scanner comprises plural line sensors.
Claim 7
Dependent Claim
23 words
An apparatus according to claim 1, wherein said hue appointing means appoints the hue by appointing a desired portion on the original image.
Claim 8
Dependent Claim
14 words
An apparatus according to claim 1, wherein said common operating means comprises a digitizer.
Claim 9
Dependent Claim
23 words
An apparatus according to claim 1, further comprising image formation means for forming a visible image in accordance with the converted image data.
Claim 10
Dependent Claim
15 words
An apparatus according to claim 8, wherein said image formation means comprises a photosensitive member.
Claim 11
Dependent Claim
20 words
An apparatus according to claim 8, wherein said image formation means plane-sequentially forms an image of the plural recording colors.
Claim 12
Dependent Claim
139 words
A copying apparatus comprising: an original support for supporting an original image; a digitizer for digitizing a desired portion of the original image placed on said original support; hue extracting means for extracting a hue to be obtained after a conversion processing of original image data having a gradation, from the original image placed on said original support, based on a hue of the desired portion of the original image digitized by said digitizer; and conversion means for converting the original image data into converted image data having the same hue extracted by said hue extracting means and having a gradation proportional to the gradation of the original image data, wherein said conversion means converts the entire color of the original image on the original support of the copying apparatus into the hue extracted by said hue extracting means.
Claim 13
Dependent Claim
139 words
A copying apparatus comprising: an original support for supporting an original image; a digitizer for digitizing a desired portion of the original image placed on said original support; hue extracting means for extracting a hue to be obtained after a conversion processing of original image data having a gradation, from the original image placed on said original support, based on a hue of the desired portion of the original image digitized by said digitizer; and conversion means for converting the original image data into converted image data having the same hue extracted by said hue extracting means and having a gradation proportional to the gradation of the original image data, wherein said conversion means converts the entire color of the original image on the original support of the copying apparatus into the hue extracted by said hue extracting means.
Claim 14
Dependent Claim
53 words
An apparatus according to claim 11, further comprising: image data supply means for supplying the original image data, wherein said hue extracting means is arranged so as to extract the hue to be obtained after conversion, by extracting a particular hue in the original image data supplied by said image data supply means.
Claim 15
Dependent Claim
16 words
An apparatus according to claim 12, wherein said image data supply means comprises a flat-bed scanner.
Claim 16
Dependent Claim
14 words
An apparatus according to claim 13, wherein said flat-bed scanner comprises plural line sensors.
Claim 17
Dependent Claim
23 words
An apparatus according to claim 11, further comprising image formation means for forming a visible image in accordance with the converted image data.
Claim 18
Dependent Claim
15 words
An apparatus according to claim 15, wherein said image formation means comprises a photosensitive member.
Claim 19
Dependent Claim
19 words
An apparatus according to claim 15, wherein said image formation means plane-sequentially forms an image of plural recording colors.
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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) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |