Image processing device and image processing method

Details Image processing device and image processing method Image processing device and image processing method

2006-11-21

2006-11-21

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001900, C358S426120, C358S539000

Reexamination Certificate

active

07139099

ABSTRACT:
Disclosed are an image processing device and an image processing method capable of generating a high-resolution color image of a fine gray scale from image data of a small information amount by using a small memory capacity. A character graphics image of high resolution generated by a character rasterizing block is converted by a conversion block to image data in which color information of one color is assigned per group of pixels, and tag information indicating whether the color information is used or not is added with respect to the multiple pixels to which the color information is assigned. By the tag information, while maintaining the high resolution, a fine gray scale can be assured. An image decoding block which has received such image data decodes the image data into a color image of output resolution by assigning the color information to the position indicated by the tag information. For example, the color of peripheral pixels may be assigned to a pixel to which no color information is assigned by the tag information.

REFERENCES:
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patent: 5684895 (1997-11-01), Harrington
patent: 6016360 (2000-01-01), Nguyen et al.
patent: 6373890 (2002-04-01), Freeman
patent: 11-296670 (1999-10-01), None

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