Image processing apparatus for color correcting an image which can monitor the result of the color correction

• US 4,864,391 A
• Filed: 05/05/1987
• Issued: 09/05/1989
• Est. Priority Date: 05/09/1986
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Taguchi, Tomishige
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Faris, E. Anne
• Application Number:
  US07/046,086
• Time in Patent Office: 854 Days
• Field of Search: 358/76, 358/80, 358/75
• US Class Current: 358/518
• CPC Class Codes: H04N 1/6011 with simulation on a subsidiary picture reproducer H04N1/622 takes precedence; matching two or more picture reproducers H04N1/6052

Abstract

An image processing apparatus for color separating an image and color correcting said image comprises: means for generating a plurality of coefficient values which are used when said color correction is performed; coefficient setting means for setting said plurality of coefficient values; and control means for allowing the coefficient values set by said coefficient setting means to be displayed on a monitor.

Claims

1. An image processing apparatus for correcting an image, comprising:

(a) means for generating a plurality of coefficient values which are used when color correction is performed;

(b) coefficient setting means for setting the plurality of coefficient values;

(c) control means for allowing the coefficient values set by said coefficient setting means to be displayed on a monitor;

(d) supply means for supplying image data corresponding to said image to the monitor, so as to reproduce the image data as a visible image; and

(e) inhibit means for inhibiting reproduction of the image data by the monitor when said control means operates.

2. An image processing apparatus according to claim 1, further comprising:

(f) a monitor for displaying said coefficient values.

3. An image processing apparatus according to claim 1, further comprising:

(f) a memory to store a plurality of color components of an input image; and

(g) means for correcting the color components stored in said memory in accordance with the coefficient values set by said coefficient setting means.

4. An image processing apparatus according to claim 1, wherein said coefficient setting means comprises first setting means for setting kinds of the coefficient values and second setting means for instructing that the coefficient values of the kinds which were set by said first setting means be changed.

5. An image processing apparatus for correcting an image, comprising:

(a) means for generating a plurality of coefficient values which are used when color correction is performed;

(b) coefficient setting means for setting the plurality of coefficient values;

(c) control means for allowing the coefficient values set by said coefficient setting means to be displayed on a monitor;

(d) supply means for supplying image data corresponding to said image to the monitor, so as to reproduce the image data as a visible image;

(e) inhibit means for inhibiting reproduction of the image data by the monitor when said control means operates;

(f) a memory to store a plurality of color components of an input image; and

(g) means for correcting the color components stores in said memory in accordance with the coefficient values set by said coefficient setting means,

wherein, when said respective color components stored in said memory are respectively C₁, M₁, and Y₁, said means for performing the color correction is means for performing the following arithmetic operation;

##EQU2## wherein the coefficient values are C₁₁ to C₁₃, M₁₁ to M₂₃, and Y₃₁ to Y₃₃.

6. An image processing apparatus comprising:

(a) a memory to store an input image;

(b) means for setting a plurality of coefficient values which are used to color correct the image stored in said memory, said setting means including first setting means for setting kinds of the coefficient values and second setting means for instructing that the coefficient values of the kinds which were set by said first setting means be changed;

(c) control means for allowing the coefficient values set by said setting means to be displayed on a monitor;

(d) supply means for supplying image data corresponding to said image to the monitor, so as to reproduce the image data as a visible image; and

(e) inhibit means for inhibiting reproductions of the image data by the monitor when said control means operates.

7. An image processing apparatus according to claim 6, further comprising:

(f) means for color correcting the image stored in said memory in accordance with said coefficient values.

8. An image processing apparatus according to claim 6, wherein s aid control means is means for supplying a pattern corresponding to the coefficient values which were set by said setting means to the monitor in place of the image stored in the memory.

9. An image processing apparatus according to claim 6, further comprising the monitor.

10. An image processing apparatus according to claim 6, wherein said memory is a memory for storing every color component of an input image.

11. An image processing apparatus comprising:

(a) a memory to store input image data;

(b) correcting means for color correcting said image data stored in said memory; and

(c) supplying means for simultaneously supplying to a monitor the image data before it is corrected by said correcting means and image data after it has been corrected by the correcting means.

12. An image processing apparatus according to claim 11, wherein said supplying means includes:

(i) indicating means for indicating predetermined data in said image data stored in said memory;

(ii) means for outputting the data indicated by said indicating means to said correcting means; and

(iii) means for converting both the data indicated by said indicating means and the data which has been color corrected by said correcting means into numerical value pattern signals and supplying the numerical value pattern signals to said monitor.

13. An image processing apparatus according to claim 12, wherein said memory is a memory to store the image of one picture plane and said indicating means is means for indicating the data at a predetermined position in said picture plane.

14. An image processing apparatus according to claim 13, wherein said supplying means further includes:

(iv) means for supplying a pattern signal indicative of the redetermined position indicated by said indicating means to the monitor.

15. An image processing apparatus according to claim 11, further comprising the monitor.

16. An image processing apparatus comprising:

(a) memory means for storing a plurality of color component signals on a picture plane unit basis;

(b) color correcting means for color correcting a signal read out of said memory means on a picture plane unit basis;

(c) designating means for designating a part of said picture plane unit; and

(d) means for displaying data before the color correction and the data after it is color corrected by said color correcting means with respect to the part designated by said designating means.

17. An image processing apparatus according to claim 16, wherein said displaying means is means for displaying on a monitor screen a position of the part designated by said designating means.

18. An image processing apparatus according to claim 16, wherein said memory means stores said color components signals into different memory areas, respectively.