Patent US8705140B2 successfully refreshed from Google Patents.
US8705140B2
Active / In Force
US
⏱️ 5.8 years remaining
Systems and methods for dynamic sharpness control in system using binary to continuous tone conversion
Assignee: Xerox Corp
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Filing: 2012-08-14
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Granted: 2014-04-22
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Expires: 2032-08-14
Abstract
Abstract Embodiments relate to systems and methods for dynamic sharpness control in system using binary to continuous tone conversion. Image data can be processed in the image path of a copier, printer, or other device to enhance sharpness based on user settings. The image can originate in a high-resolution and/or high-color format. The user can select sharpness values to provide better rendered detail. A front-end high-pass 2D filter can be adjusted in response to the settings. A binarized version of the image data is produced in the downstream path. At the back of the image path, the image would conventionally be sent through a binary data to extended contone (BDEC) low-pass filter, set to a fixed level, to produce contone output, counteracting the user's sharpness settings. Instead of applying a fixed back-end filter, that stage can be dynamically adjusted to correspond to the user's sharpness settings, reducing the low-pass effect proportionately.
Inventors
- 👤 Xing Li
- 👤 Zhenhuan Wen
- 👤 Peter D. McCandlish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:14
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/409; H04N1/4092; H04N1/40075
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
104 words
A method of processing images, comprising: receiving image data; receiving a set of user sharpness selections for processing the image data; filtering the image file using a front-end filter before rendering the image data to binary data; automatically generating a set of dynamically adjusted binary data to extended continuous tone (BDEC) filter parameters based on the set of user sharpness selections; filtering the BDEC version of the image file using a back-end filter using the set of dynamically adjusted BDEC filter parameters to generate a BDEC version of the image data; and rendering the BDEC version of the image data via an output device.
Claim 2
Independent Claim
104 words
A method of processing images, comprising: receiving image data; receiving a set of user sharpness selections for processing the image data; filtering the image file using a front-end filter before rendering the image data to binary data; automatically generating a set of dynamically adjusted binary data to extended continuous tone (BDEC) filter parameters based on the set of user sharpness selections; filtering the BDEC version of the image file using a back-end filter using the set of dynamically adjusted BDEC filter parameters to generate a BDEC version of the image data; and rendering the BDEC version of the image data via an output device.
Claim 3
Independent Claim
20 words
The method of claim wherein the front-end filter comprises at least one of a high-pass filter or a low-pass filter.
Claim 4
Dependent Claim
19 words
The method of claim 2 , wherein the front-end filter comprises a high-pass filter configured as a two-dimensional filter.
Claim 5
Dependent Claim
14 words
The method of claim 1 , wherein the back-end filter comprises a low-pass filter.
Claim 6
Dependent Claim
22 words
The method of claim 1 , wherein the set of user sharpness selections comprises a sharpening value selected from a sharpening scale.
Claim 7
Dependent Claim
15 words
The method of claim 1 , further comprising performing edge detection on the image data.
Claim 8
Dependent Claim
30 words
The method of claim 1 , wherein the output device comprises at least one of a copy device printer device, a multi-function device, a facsimile device, or a display device.
Claim 9
Dependent Claim
127 words
An image output system, comprising: a network interface to an image source storing image data; and a processor, communicating with the image source via the network interface, the processor being configured to— receive the image data, receive a set of user sharpness selections for processing the image data, filter the image file using a front-end filter before rendering the image data to binary data, automatically generate a set of dynamically adjusted binary data to extended continuous tone (BDEC) filter parameters based on the set, of user sharpness selections, filter the BDEC version of the image file using a back-end filter using the set of dynamically adjusted BDEC filter parameters to generate a BDEC version of the image data, and render the BDEC version of the image data.
Claim 10
Dependent Claim
127 words
An image output system, comprising: a network interface to an image source storing image data; and a processor, communicating with the image source via the network interface, the processor being configured to— receive the image data, receive a set of user sharpness selections for processing the image data, filter the image file using a front-end filter before rendering the image data to binary data, automatically generate a set of dynamically adjusted binary data to extended continuous tone (BDEC) filter parameters based on the set, of user sharpness selections, filter the BDEC version of the image file using a back-end filter using the set of dynamically adjusted BDEC filter parameters to generate a BDEC version of the image data, and render the BDEC version of the image data.
Claim 11
Dependent Claim
22 words
The system of claim 8 , wherein the front-end filter comprises at least one of a high-pass filter or a low-pass filter.
Claim 12
Dependent Claim
19 words
The system of claim 9 , wherein the front-end filter comprises a high-pass filter configured as a two-dimensional filter.
Claim 13
Dependent Claim
14 words
The system of claim 8 , wherein the back-end filter comprises a low-pass filter.
Claim 14
Dependent Claim
22 words
The system of claim 8 , wherein the set of user sharpness selections comprises a sharpening value selected from a sharpening scale.
Claim 15
Dependent Claim
20 words
The system of claim 8 , wherein the processor is further configured to perform edge detection on the image data.
Claim 16
Dependent Claim
32 words
The system of claim 8 , wherein the image output system comprises at least one of a copy device, a printer device, a multi-function device, a facsimile device, or a display device.
References Cited (Backward Citations)
US6020979A
Cited
US7352490B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 7.5 Years (Year 8) | 2021-04-21 | 2021-10-21 | 2022-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2025-04-21 | 2025-10-21 | 2026-04-22 | $7700.00 | Window Closed / Lapsed |