Image analysis – Color image processing – Pattern recognition or classification using color
Reexamination Certificate
1995-03-29
2001-02-20
Vu, Kim Yen (Department: 2722)
Image analysis
Color image processing
Pattern recognition or classification using color
C358S515000, C358S529000, C358S530000
Reexamination Certificate
active
06192146
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image processing system.
2. Description of the Prior Art
An apparatus which optically reads an image of a document with a photosensor, converts it to an electrical signal, processes the signal and prints it out has been known.
When characters comprising data are to be printed, it is necessary to read the document image while a transparent sheet bearing the data characters is overlayed on the document. This is a very inconvenient method.
On the other hand, it may be possible to electrically generate a character signal and combine it with a document image signal, but the resolving power for the inserted characters is lowered when the document image includes a half-tone image. Further, when the document image including a color image is reproduced, the inserted characters are sometimes not clearly reproduced depending on a background.
A binarizing processing method such as a dither method for reproducing gray levels of the document image has been known. It reproduces n×m gray levels with n×m pixels. As a result, the resolving power is lowered by a factor of n×m. Accordingly, the line image of characters included in the document may be unclear or combined characters may be unclear.
An apparatus which exposes a document image to an electrophotographic drum through an optical system and irradiates the drum with a laser beam modulated by a character signal to combine the document image and the character image has been known. However, this system is complex.
An apparatus which stores image data and other image data to be combined with the image data is also known. However, a long time is required to combine these types of data.
In conventional color copying machine which uses a photosensitive medium or a laser beam color printer, a yellow or blue toner image is formed on the photosensitive medium, and transferred to a record paper. Then a magenta or green toner image is formed and transferred on the record paper. Next a cyan or red toner image is formed and transferred. And finally a black toner image is formed and transferred on the record paper. As a result, four color cycles are repeated even if a document includes only one color and hence the time required for such conventional processing is large.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an image processing system which allows addition of a character image to an image including gray or half-tone level or image portion without deteriorating image quality.
It is another object of the present invention to provide an image processing system which allows real-time addition of a character image such as management data to an optically read image including a gray or half-tone level without deteriorating image quality.
It is another object of the present invention to provide an image processing system which processes a gray level of a read image signal without deteriorating the resolving power of a character image included in the read image and a character image to be added, to produce a combined digital image signal.
It is another object of the present invention to provide an image processing system which allows the addition of a character image to any position in an image including a gray level without deteriorating image quality.
It is another object of the present invention to provide an image processing system which combines a color image including a gray level with a character image without deteriorating image quality.
It is another object of the present invention to provide an image processing system which combines a first image with a second image while preventing a combined image from becoming unclear because of an image condition of the combined area of the first image.
It is another object of the present invention to provide an image processing system which combines a read image and another image without taking a long combination processing time and prints out the combined image.
It is another object of the present invention to provide a color image printing system which real-time reproduces a half-tone level of a color image without deteriorating the resolving power of the color image.
It is another object of the present invention to provide an image printing system which reproduces a color image including color components or a monochromatic image in a short time.
The above and other objects of the present invention will be apparent from the following description of the invention.
REFERENCES:
patent: 3632867 (1972-01-01), Markow
patent: 3670099 (1972-06-01), Oliver
patent: 3752912 (1973-08-01), Ohsawa et al.
patent: 3783275 (1974-01-01), Oelmayer et al.
patent: 3828319 (1974-08-01), Owen et al.
patent: 3956583 (1976-05-01), Pugsley
patent: 4004079 (1977-01-01), Boston
patent: 4034400 (1977-07-01), Owen et al.
patent: 4037249 (1977-07-01), Pugsley
patent: 4042962 (1977-08-01), Yamaji et al.
patent: 4194221 (1980-03-01), Stoffel
patent: 4206475 (1980-06-01), Taudt et al.
patent: 4214276 (1980-07-01), Pugsley et al.
patent: 4251837 (1981-02-01), Janeway, III
patent: 4276567 (1981-06-01), Wellendorf et a.
patent: 4310848 (1982-01-01), Carter et al.
patent: 4323919 (1982-04-01), Fuji et al.
patent: 4413287 (1983-11-01), Torpie et al.
patent: 4415981 (1983-11-01), Cutter et al.
patent: 4467348 (1984-08-01), Fujii et al.
patent: 4474470 (1984-10-01), Brandt et al.
patent: 4476486 (1984-10-01), Ayata et al.
patent: 4496989 (1985-01-01), Hirosawa
patent: 4538182 (1985-08-01), Saito et al.
patent: 4549222 (1985-10-01), Fogaroli et al.
patent: 4553172 (1985-11-01), Yamada et al.
patent: 4587633 (1986-05-01), Wang et al.
patent: 4625234 (1986-11-01), Yamada
patent: 4626923 (1986-12-01), Yoshida
patent: 4642681 (1987-02-01), Ikeda
patent: 4647923 (1987-03-01), Carelton, Jr.
patent: 4663662 (1987-05-01), Sekizawa
patent: 4694502 (1987-09-01), Ozawa et al.
patent: 4739397 (1988-04-01), Hayashi
patent: 4750212 (1988-06-01), Yokomizo
patent: 4819063 (1989-04-01), Sugiura et al.
patent: 4953012 (1990-08-01), Abe
patent: 5032904 (1991-07-01), Murai et al.
patent: 5249061 (1993-09-01), Nagashima et al.
patent: 2118720 (1972-11-01), None
patent: 2209598 (1976-05-01), None
patent: 2729113 (1978-01-01), None
patent: 2906073 (1979-08-01), None
patent: 3103394 (1981-02-01), None
patent: 3043521 (1981-04-01), None
patent: 3019480 (1981-11-01), None
patent: 3125699 (1982-06-01), None
patent: 157286 (1982-10-01), None
patent: 3220298 (1982-12-01), None
patent: 31418 (1981-07-01), None
patent: 38497 (1981-10-01), None
patent: 2015304 (1979-09-01), None
patent: 2082014 (1982-02-01), None
patent: 2087683 (1982-05-01), None
patent: 2012240 (1983-01-01), None
patent: 2102240 (1983-01-01), None
patent: 2087497 (1985-04-01), None
patent: 54-118722 (1979-09-01), None
patent: 56-144667 (1981-11-01), None
patent: 57-4661 (1982-01-01), None
patent: 57-38055 (1982-03-01), None
patent: 57-44825 (1982-03-01), None
patent: 57-79944 (1982-05-01), None
patent: 57-32175 (1982-07-01), None
patent: 57-127361 (1982-08-01), None
patent: 57-189154 (1982-11-01), None
patent: 58-9462 (1983-01-01), None
patent: 58-60876 (1983-04-01), None
patent: 58-119274 (1983-07-01), None
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Vu Kim Yen
LandOfFree
Image processing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2606418