Image processing apparatus

• US 20080158607A1
• Filed: 12/07/2007
• Published: 07/03/2008
• Est. Priority Date: 12/07/2006
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Fujii, Shuhji, Ueda, Nobuyuki
• Application Number:
  US11/999,898
• Publication Number:
  US 20080158607A1
• Time in Patent Office: Days
• US Class Current: 358/2.1
• CPC Class Codes: H04N 1/00843 based on recognising a copy prohibited original, e.g. a banknote pattern authentication and markers therefor, forgery detection G06V20/95; character recognition G06V30/10; document-oriented image-based pattern recognition G06V30/40; testing paper currency or similar valuable papers for genuineness G07D7/00
• CPC Class Codes: H04N 1/00848 by detecting a particular original
• CPC Class Codes: H04N 1/00864 Modifying the reproduction, e.g. outputting a modified copy of a scanned original details of composing or otherwise geometrically modifying originals H04N1/387
• CPC Class Codes: H04N 1/00872 by image quality reduction, e.g. distortion or blacking out
• CPC Class Codes: H04N 1/00875 Inhibiting reproduction, e.g. by disabling reading or reproduction apparatus

Abstract

Even if similar images which are similar to specific images exist in image data, the influence of the similar images is eliminated so that restriction of processing can be executed without fail. There are provided a detection section 70 for detecting specific images and similar images in a form similar to the form of the specific images in the image data, a judgment section 71 for judging whether or not the specific images are included in the image data on the basis of a threshold, an identification section 72 for identifying a target area in which the similar images exist, and a threshold determination section 73 for determining the threshold. The threshold determination section 73 determines the threshold on the basis of the size ratio of the target area to a predetermined range.

Claims

1. An image processing apparatus comprising:

a detection section for detecting specific images in image data;

a judgment section for judging whether or not the specific images are included in the image data on the basis of a threshold; and

an identification section for, when similar images in a form similar to the form of the specific images exist, identifying the similar images;

wherein

the judgment section eliminates the influence of the identified similar images to make judgment.

2. The image processing apparatus according to claim 1, further comprising a threshold determination section for determining the threshold, wherein

the identification section identifies a target area in which the similar images exist;

and

the threshold determination section changes the threshold on the basis of the target area.

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

the identification section identifies a target area in which the similar images exist;

and

the judgment section excludes the target area when performing judgment.

4. The image processing apparatus according to claim 2, wherein

the detection section detects similar images within a predetermined range;

and

the identification section subdivides the predetermined range to identify the target area.

5. The image processing apparatus according to claim 3, wherein

the detection section detects similar images within a predetermined range;

and

the identification section subdivides the predetermined range to identify the target area.

6. The image processing apparatus according to claim 4, wherein

the identification section judges whether there is a similar image or not in each of areas obtained by subdividing the predetermined range, and excludes areas having no similar image to identify the target area.

7. The image processing apparatus according to claim 5, wherein

the identification section judges whether there is a similar image or not in each of areas obtained by subdividing the predetermined range, and excludes areas having no similar image to identify the target area.

8. The image processing apparatus according to claim 4, wherein

the threshold determination section determines the threshold on the basis of the size ratio of the target area to the predetermined range.

9. The image processing apparatus according to claim 5, wherein

the threshold determination section determines the threshold on the basis of the size ratio of the target area to the predetermined range.

10. The image processing apparatus according to claim 2, wherein

the detection section detects position information about similar images within a predetermined range;

and

the identification section identifies the target area on the basis of the position information.

11. The image processing apparatus according to claim 3, wherein

the detection section detects position information about similar images within a predetermined range;

and

the identification section identifies the target area on the basis of the position information.

12. The image processing apparatus according to claim 10, wherein

the identification section identifies the similar images existing on the outer edge, from the position information about the multiple similar images and demarcates the perimeter of the target area.

13. The image processing apparatus according to claim 11, wherein

the identification section identifies the similar images existing on the outer edge, from the position information about the multiple similar images and demarcates the perimeter of the target area.

14. The image processing apparatus according to claim 10, wherein

the threshold determination section determines the threshold on the basis of the size ratio of the target area to the predetermined range.

15. The image processing apparatus according to claim 11, wherein the threshold determination section determines the threshold on the basis of the size ratio of the target area to the predetermined range.