Image processing apparatus capable of detecting marked region
AssigneeKonica Corporation
InventorsMasahiko Matsunawa, Hiroshi Katoh
Life of this patent
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Abstract
An image processing apparatus including an image input circuit for reading color images obtained by separating each pixel of an an original image into three color components a color data-forming circuit for forming color data for identifying a color of each of the pixels as either a white color, an achromatic color or a chromatic color on the basis of the color images, a color-reproducing circuit for converting the color images into density data corresponding to plural recording colors, and a marked region-detecting circuit for detecting a marked portion on the basis of the color data formed by the color data-forming circuit and for extracting a region enclosed by the marked portion.
Claims21
An image processing apparatus for recording colors of pixels with a plurality of coloring materials by changing at least a portion of an achromatic image on an original image, which achromatic image has black and white portions and is designated by a marked portion including a color marker having a color, into a chromatic image having a color determined on the basis of the color of the color marker by using the plurality of coloring materials, the apparatus comprising:
- means for reading the original image and separating each pixel of the original image including the marked portions into a plurality of color image components and generating a plurality of color image signals corresponding to the plurality of color image components;
- means for generating color data for each pixel indicating whether each pixel is white, black, or chromatic and generating a plurality of density data for each pixel indicating a density of each of the plurality of coloring materials in the pixel to record a color for each pixel, which color is formed by a combination of the plurality of coloring materials, on the basis of the plurality of color image signal signals;
- means for detecting the marked portion on the basis of the color data;
- and
- means for changing the color of pixels of the portion of the achromatic image to the color of the color marker of the marked portion on the basis of a plurality of density data for a pixel within the marked portion and by using the plurality of coloring materials.
An image processing apparatus for recording colors of pixels with a plurality of coloring materials by changing at least a portion of an achromatic image on an original image, which achromatic image has black and white portions and is designated by a marked portion including a color marker having a color, into a chromatic image having a color determined on the basis of the color of the color marker by using the plurality of coloring materials, the apparatus comprising:
- means for reading the original image and separating each pixel of the original image including the marked portion into a plurality of color image components and generating a plurality of color image signals corresponding to the plurality of color image components;
- means for generating a plurality of density data for each pixel indicating a density of each of the plurality of color image signals;
- means for detecting the marked portion on the basis of the plurality of color image signals;
- and
- means for changing the color of pixels of the portions of the achromatic image to the color of the color marker of the marked portion on the basis of a plurality of density data for a pixel within the marked portion and by using the plurality of coloring materials.
Dependencies are inferred from the claim text.