Image forming apparatus for extracting hand-written image

• US 8,483,483 B2
• Filed: 04/23/2010
• Issued: 07/09/2013
• Est. Priority Date: 04/24/2009
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ohnishi, Kazuyuki
• Primary Examiner(s): Chen, Wenpeng
• Assistant Examiner(s): Niu, Feng
• Application Number:
  US12/766,375
• Publication Number:
  US 20100272362A1
• Time in Patent Office: 1,173 Days
• Field of Search: 382/100, 382184-187, 382/190, 382/179, 382/309, 382/284, 382/177, 358 113- 115, 358/451, 358/474, 713/243, 713/245, 209/584
• US Class Current: 382/179
• CPC Class Codes: H04N 1/00358 Type of the scanned marks
• CPC Class Codes: H04N 1/00374 on the same page as at least a part of the image
• CPC Class Codes: H04N 1/00376 Means for identifying a mark sheet or area
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

An image forming apparatus that allows easy and reliable extraction of a hand-written image and allowing reliable execution of a desired process on image data based on the hand-written image is provided. For this purpose, during a mark adding process, a scanner unit and an image processing unit form YMCK data based on an original image; a specific area extracting unit extracts image data of a specific area from the YMCK data; a mark image adding unit combines image data of the specific area with the mark image data to form combined data; and a printer unit outputs a first image based on the combined data. During image processing of the specific area, the scanner unit forms RGB data based on the first image; the mark area extracting unit extracts image data of the mark area from the RGB data; the specific area image processing unit performs prescribed image processing on the image data of mark area; and the printer unit outputs a second image based on the YMCK data after the prescribed image processing.

Claims

1. An image forming apparatus, comprising:

a first image data forming unit forming a first image data based on an original image including a feature area and a specific area;

a specific area extracting unit extracting image data of said specific area from said first image data;

a mark image adding unit combining the extracted image data of said specific area of said first image data and a mark image data for outputting a mark image, for forming combined data corresponding to the specific area; and

a first output unit for printing a first image including a mark area as an area where said mark image is formed for receiving a handwritten image to be manually formed thereon, based on said combined data, and an original image area corresponding to the feature area of the original image where said mark image is not formed;

a second image data forming unit forming a second image data based on said first image having, after said first image is printed, said handwritten image manually formed on said mark area;

a mark area extracting unit extracting image data of said mark area, including the handwritten image formed on said mark area, from said second image data, by detecting the mark image in said second image data;

a specific area image processing unit performing prescribed image processing on the extracted handwritten image data of said mark area of said second image data; and

a second output unit outputting a second image based on the second image data after said prescribed image processing, wherein

said feature area is an area where image features of the original image are substantially formed in said original image, and

said specific area is an area where image features of the original image are determined not to be substantially formed, in said original image.

2. The image forming apparatus according to claim 1, wherein

said specific area is an area of a certain predetermined area or larger in which an image having an image density value within a certain predetermined range is formed, of said original image.

3. The image forming apparatus according to claim 1, wherein

said specific area is an area where an image having brightness of a certain predetermined value or higher is formed, of said original image.

4. The image forming apparatus according to claim 1, wherein

color of said mark image is yellow.

5. The image forming apparatus according to claim 1, wherein

said mark image is formed of a plurality of dots, and said dot is a point including 1×

1 to 8×

8 pixels.

6. The image forming apparatus according to claim 1, wherein

said mark image is formed of a plurality of dots arranged to have a known prescribed interval from each other, and said mark area extracting unit extracts image data of said mark area from said second image data, by detecting at least a part of said plurality of dots.

7. The image forming apparatus according to claim claim 1, wherein

said specific area image processing unit erases the extracted image data of said mark area, of said second image data.

8. The image forming apparatus according to claim 1, wherein

said specific area image processing unit performs pattern recognition on the extracted image data of said mark area, of said second image data.

9. The image forming apparatus according to claim 1, wherein the feature area and the specific area are mutually exclusive.

10. The image forming apparatus according to claim 1, wherein said feature area includes one or more character areas and/or figure areas of the original image.