Claims
- 1. An image forming method comprising:
- an image input step of inputting color image information;
- a color discrimination step of discriminating a color of an image inputted by said image input step at each pixel;
- an image processing step of generating a first color component and a second color component on the basis of the color discrimination result by said color discrimination step;
- a comparing step of comparing values of the first and second color components generated by said image processing step;
- a selecting step of selecting either the first color component or the second color component on the basis of the comparison result by said comparing step;
- a diffusion step of diffusing a color component which is not selected by said selecting step to neighboring pixels; and
- an image output step of outputting a plurality of color information independently,
- wherein said selecting step selects the color component having the larger value out of the first and second color components on the basis of the comparison result.
- 2. The image forming method according to claim 1, further comprising a storing step of storing the color information outputted by said image output step, wherein said selecting step judges whether or not pixels neighboring the pixel of interest in a predetermined area are filled with one color component on the basis of the stored color information and, in a case where the predetermined area is filled with said one color component, said selecting step selects a color component data other than said one color component regardless of the comparison result by said comparing step.
- 3. The image forming method according to claim 2, further comprising a random number generating step of generating random numbers, wherein the size of said predetermined area can be changed depending on the random numbers generated by the random number generating step.
- 4. The image forming method according to claim 1, wherein said image processing step generates a color component by adding a predetermined value to color component data corresponding to the color discriminated by said color discrimination step.
- 5. The image forming method according to claim 1, wherein said image processing step multiplies a value of a color component which is not selected by said selecting step out of the first and second color components, by a predetermined coefficient which is less than one.
- 6. The image forming method according to claim 5, wherein said image processing step performs said multiplication before the diffusion by said diffusion step.
- 7. The image forming method according to claim 1, wherein said image process step generates a color component by adding a value, which is obtained by multiplying one of the first and second color components by a predetermined coefficient which is less than one, to the other color component.
- 8. The image forming method according to claim 1 wherein said selecting step selects a color component having a smaller value out of the first and second color components in a case where the difference between the first and second components is smaller than a predetermined value.
- 9. An image forming method which outputs a color image by separating color image information into at least two color components comprising:
- a color separating step of separating a pixel of interest of a color image information to be outputted into two color components, a first color component and a second color component;
- a color data generating step of generating a first color data by adding a first diffusion data to the first color component and a second color data by adding a second diffusion data to the second color component;
- a comparing step of comparing the first color data and the second color data;
- a selecting step of selecting one of the first and second color data on the basis of the comparison result by said comparing step;
- a diffusion step of assigning color data which is not selected by said selecting step to pixels neighboring a pixel of interest in regular order, and for regarding the obtained data as the first diffusion data or the second diffusion data;
- a first image forming step of forming an image by selecting a predetermined color out of at least one color in accordance with the first color data selected by said selecting step; and
- a second image forming step of forming an image by selecting a predetermined color out of at least one color in accordance with the second color data selected by said selecting step.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-244735 |
Sep 1993 |
JPX |
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Parent Case Info
This application is a division of application Ser. No. 08/315,299 filed Sep. 29, 1994 U.S. Pat. No. 5,699,167.
US Referenced Citations (14)
Divisions (1)
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Number |
Date |
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Parent |
315299 |
Sep 1994 |
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