Image processing apparatus having means for detecting non-visible light, and image processing method therefor

• US 5,481,334 A
• Filed: 10/21/1993
• Issued: 01/02/1996
• Est. Priority Date: 10/23/1992
• Status: Expired due to Term

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Nagase, Tetsuya, Hayashi, Toshio, Utagawa, Tsutomu, Sasanuma, Nobuatsu, Nakai, Takehiko, Arimoto, Shinobu, Shimizu, Katsuichi, Yoshinaga, Kazuo, Komiya, Yutaka
• Primary Examiner(s): Pendegrass, Joan H.
• Application Number:
  US08/139,174
• Time in Patent Office: 803 Days
• Field of Search: 355/201, 355/133, 356/71, 250/556, 358/500
• US Class Current: 399/366
• CPC Class Codes: G03G 21/046 by discriminating a special original, e.g. a bank note
• CPC Class Codes: H04N 1/00846 based on detection of a dedicated indication, e.g. marks or the like
• 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 1/32144 embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 2201/3226 of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
• CPC Class Codes: H04N 2201/3243 of type information, e.g. handwritten or text document
• CPC Class Codes: H04N 2201/327 which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3271 Printing or stamping

Abstract

A specified original that is not supposed to be copied is marked with a pattern that is formed by infrared reflected light. A copying apparatus includes a detecting unit for detecting the pattern and determines that an original is the specified original in accordance with the detection by the detecting unit. A copying operation is controlled in accordance with the determination of whether the original is the specified original that is not supposed to be copied.

Claims

1. An image processing apparatus for controlling output of visible component data corresponding to an original in accordance with infrared reflected light detected from the original, comprising:

detecting means for detecting the presence or absence of a pattern formed on the original on the basis of the infrared reflected light; and

control means for determining that the original is a specified original in accordance with the result of the detection by said detecting means, and for controlling the visible component data output in accordance with the determination.

2. An apparatus according to claim 1, wherein said control means forbids the visible component data output.

3. An apparatus according to claim 1, further comprising storage means for storing a predetermined pattern compared with the pattern detected by said detecting means.

4. An apparatus according to claim 3, wherein the predetermined pattern comprises at least two patterns corresponding to upper and lower surfaces of the original.

5. An image processing apparatus for controlling output of visible component data corresponding to an original in accordance with infrared reflected light detected from the original, comprising:

detecting means for detecting the presence or absence on the original of a pattern that performs infrared absorption with respect to the infrared light, on the basis of the infrared reflected light; and

control means for determining that the original is a specified original in accordance with the result of the detection by said detecting means, and for controlling the visible component data output in accordance with the determination.

6. An image processing method for detecting patterns of reflected light components of visible light and light other than visible light, which are detected from an image, determining that the image is a specified image, and controlling image processing control, comprising the steps of:

detecting pixels having a reflected light component except for the visible light that has a level lower than a predetermined level;

determining that the image is the specified image in accordance with the number of detected pixels; and

controlling the image processing in accordance with said determining step.

7. A method according to claim 6, further comprising the detection step of detecting that the reflected light component of the visible light has a level other than the predetermined level.

8. A method according to claim 7, wherein said determining step comprises performing determination on the basis of a detection result using the reflected light component of the light other than the visible light and a detection result of the reflected light component of the visible light.

9. A method according to claim 6, wherein said controlling step comprises forbidding the visible component data output.

10. A method according to claim 6, further comprising the storage step of storing a predetermined pattern compared with the pattern detected by said detecting means.

11. An image processing apparatus for controlling image processing in accordance with visible reflected light components having a plurality of wavelength components and an infrared reflected light component, the reflected light components being detected from a target image, characterized by comprising:

first detecting means for detecting the visible reflected light components having the plurality of wavelength components on an entire image a plurality of times;

second detecting means for detecting the infrared reflected light component on the entire image in association with every detection of said first detecting means;

determining means for determining that the target image is a predetermined image in accordance with detection results of said first and second detecting means; and

control means for controlling the image processing in accordance with a determination result of said determining means.

12. An apparatus according to claim 11, wherein the plurality of wavelength components are R, G, and B components.

13. An apparatus according to claim 11, wherein said first and second detecting means are formed on the same substrate.

14. An apparatus according to claim 11, wherein said control means forbids the visible component data output.

15. An apparatus according to claim 11, further comprising storage means for storing a predetermined pattern compared with the pattern detected by said detecting means.

16. An apparatus according to claim 11, wherein the image processing is image formation.

17. An image processing apparatus for controlling image processing in accordance with reflected light except for visible light detected from an image, comprising:

a plurality of detecting means for detecting the reflected light except for the visible light; and

determining means for determining whether the image is a specified image that has a distinguishing infrared characteristic in a predetermined wavelength, in accordance with detection results of said plurality of detecting means,

wherein said plurality of detecting means respectively detect a characteristic in the predetermined wavelength, a characteristic in a wavelength shorter than the predetermined wavelength, and a characteristic in a wavelength longer than the predetermined wavelength.

18. An apparatus according to claim 17, wherein the reflected light except for the visible light is an infrared ray.

19. An apparatus according to claim 17, wherein said determining means performs determination in accordance with a combination of outputs of the plurality of wavelength components.

20. An apparatus according to claim 17, wherein the image processing is image formation.

21. An image processing method for controlling output of visible component data corresponding to an original in accordance with infrared reflected light detected from the original, comprising the steps of:

detecting the presence or absence of a pattern formed on the original on the basis of the infrared reflected light; and

determining that the original is a specified original in accordance with the result of said detecting step, and controlling the visible component data output in accordance with said determining.

22. An image processing method for controlling image processing in accordance with visible reflected light components having a plurality of wavelength components and an infrared reflected light component, the reflected light components being detected from a target image, characterized by comprising the steps of:

detecting the visible reflected light components having the plurality of wavelength components on an entire image a plurality of times;

detecting the infrared reflected light component on the entire image in association with every detection of said first detecting;

determining that the target image is a predetermined image in accordance with detection results of said first and second detecting step; and

control means for controlling the image processing in accordance with a determination result of said determining step.