Dynamic user interface with scanned image improvement assist

• US 6,522,791 B2
• Filed: 01/23/2001
• Issued: 02/18/2003
• Est. Priority Date: 01/23/2001
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Nagarajan, Ramesh
• Primary Examiner(s): Grant, II, Jerome
• Application Number:
  US09/767,967
• Publication Number:
  US 20020097452A1
• Time in Patent Office: 756 Days
• Field of Search: 358/474, 358/505, 358/512, 358/513, 358/406, 358/482, 358/484, 358/522, 358/504, 382/312, 382/321
• US Class Current: 382/321
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/00801 according to characteristics of the original
• CPC Class Codes: H04N 1/40 Picture signal circuits H04N1/387 takes precedence

Abstract

The present invention generally relates to a digital scanner for scanning images and is directed to a method and apparatus for accurately scanning documents and for processing digital data to generate digital images as accurately as possible. The scanning system described in this application provides recommended settings for image mode and image parameters to assist the user in adjusting the settings to match the original document. The image data is analyzed to determine the optimum settings.

Claims

1. An image improvement system for determining the optimum settings for image reproduction by a scanner which is designed to read, based on current settings, an image from an original document and generate a digital image data file representing said document, said system comprising:

an image data processor which generates data from which a full page video histogram and a pixel tag histogram may be generated based on said digital image data file;

an image analyzer processor which generates said full page video histogram and said pixel tag histogram and collects statistics based on said full page video histogram and said pixel tag histogram, analyzes said statistics, and generates recommended settings for image mode and image parameter settings, based on said statistics, for improving said image reproduction of said scanner;

a scanning assist processor for comparing said recommended settings with current settings and generating recommended adjustments; and

a user interface for receiving said recommended adjustments and presenting said adjustments to a user.

2. A system for determining the optimum settings for image reproduction by a scanner which is designed to read, based on current settings, an image from an original document and generate a digital image data file representing said document, said system, as described in claim 1, wherein the image processor further comprises:

a page detection processor for generating a first set of data representing a full page of said image data file;

a segmentation processor for generating a second set of data which defines said image data in pixel form including a tag identification for each pixel; and

wherein said histograms are generated based on an analysis of said first and second sets of data.

3. A system for determining the optimum settings for image reproduction by a scanner which is designed to read, based on current settings, an image from an original document and generate a digital image data file representing said document, said system, as described in claim 1, wherein said image mode setting includes at least one setting selected from the group comprising general use default mode, text mode, coarse halftone mode, high frequency halftone mode, photograph mode, laser print/newspaper mode (coarse halftone and text), magazine mode (high frequency halftone and text), and photographic and text mode.

4. A system for determining the optimum settings for image reproduction by a scanner which is designed to read, based on current settings, an image from an original document and generate a digital image data file representing said document, said system, as described in claim 1, wherein said image parameter setting includes at least one setting selected from the group comprising auto-background suppression level, lighter/darker and contrast setting, tonal reproduction curve, filter level (sharpness/descreen level), and rendering method.

5. A scanning system for reproducing an image from an original document comprising:

a scanner for receiving an original document and generating an image data file representing said document;

an image data processor which converts said image data file to a digital image data file having full page video characteristics and pixel characteristics contained therein;

an image analyzer processor for generating a full page video histogram and a pixel tag histogram, collecting statistics based on said full page video histogram and said pixel tag histogram, analyzing said statistics, and generating recommended settings for image mode and image parameter settings, based on said statistics, for improving said image reproduction of said scanner;

a scanning assist processor for comparing said recommended settings with current settings and generating recommended adjustments; and

a user interface for receiving said recommended adjustments and presenting said adjustments to a user.

6. A scanning system for reproducing an image from an original document, as described in claim 5, wherein the image processor further comprises:

a page detection processor for generating a first set of data representing a full page of said image data file;

a segmentation processor for generating a second set of data which defines said image data in pixel form including a tag identification for each pixel; and

wherein said histograms are generated based on an analysis of said first and second sets of data.

7. A scanning system for reproducing an image from an original document, as described in claim 5, wherein said image mode setting includes at least one setting selected from the group comprising general use default mode, text mode, coarse halftone mode, high frequency halftone mode, photograph mode, laser print/newspaper mode (coarse halftone and text), magazine mode (high frequency halftone and text), and photographic and text mode.

8. A scanning system for reproducing an image from an original document, as described in claim 5, wherein said image parameter setting includes at least one setting selected from the group comprising auto-background suppression level, lighter/darker and contrast setting, tonal reproduction curve, filter level (sharpness/descreen level), and rendering method.

9. In a scanning system for reproducing an image from an original document, a method for determining the optimum settings for image reproduction by said scanning system comprising the steps of:

reading, based on a group of current settings, an image from an original document and generating an image data file representing said document;

converting said image data file to a digital image data file having full page video characteristics and pixel characteristics contained therein;

generating a full page video histogram and a pixel tag histogram;

collecting statistics based on said full page video histogram and said pixel tag histogram;

analyzing said statistics, and generating recommended settings for image mode and image parameter settings, based on said statistics, for improving said image reproduction of said scanner;

comparing said recommended settings with current settings and generating recommended adjustments; and

presenting said adjustments to a user.

10. In a scanning system for reproducing an image from an original document, a method for determining the optimum settings for image reproduction by said scanning system, as described in claim 9, wherein said image mode setting includes at least one setting selected from the group comprising general use default mode, text mode, coarse halftone mode, high frequency halftone mode, photograph mode, laser print/newpaper mode (coarse halftone and text), magazine mode (high frequency halftone and text), and photographic and text mode.

11. In a scanning system for reproducing an image from an original document, a method for determining the optimum settings for image reproduction by said scanning system, as described in claim 9, wherein said image parameter setting includes at least one setting selected from the group comprising auto-background suppression level, lighter/darker and contrast setting, tonal reproduction curve, filter level (sharpness/descreen level), and rendering method.

12. In a scanning system for reproducing an image from an original document, a method for determining the optimum settings for image reproduction by said scanning system, as described in claim 9, wherein the original document includes multiple pages said method further includes the step of storing said recommended settings for each page and when images for the full documents have been analyzed, determining recommended settings for the overall document.