Patent EP0751474A2 successfully refreshed from Google Patents.
EP0751474A2
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EP
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Image processing device for detecting one-color marks of a number of colors and image processing method thereof
Assignee: Omron Corp
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Filing: 1996-07-01
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Granted: —
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Expires: 2016-07-01
Abstract
Abstract To provide an image processing device able to accurately discriminate a specified image in an input image data, the input image is converted to binary based on black and red color extraction blocks (6 -1 and 6 -2 ) in binary processing unit (1). These binary data are consolidated by an OR circuit and stored in storage device (2). Mark location detection unit (3) extracts a square mark from the image data stored in storage device (2). Pattern shape extraction unit (4) extracts another mark which is inside the square mark. Pattern matching unit (5) obtains and outputs the goodness of fit between the extracted marks and previously established marks.
Inventors
- 👤 Shinya Sonoda
- 👤 Masahiro Akagi
- 👤 Kouichi Ohmae
- 👤 Masahito Yanagida
- 👤 Masahiro Senga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:49
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00838; H04N1/0084; H04N1/00843; H04N1/00846; G; G06; G06K; G06K7/00; G06K7/10; G06K7/12; G06V; G06V10/00; G06V10/20; G06V10/22; G06V10/40; G06V10/44; G06V10/443; G06V10/56; H04N1/00856; H04N1/00875; G06V20/00; G06V20/95
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
An image processing device to detect particular marks of given colors in a received image data of a color image, comprising: a binary processing unit containing a first mark color extracting unit to detect said particular marks of a first color and generate a first binary image output; said binary processing unit also containing a second mark color extracting unit to detect said particular marks of a second color and generate a second binary image output; and a pattern matching unit to match a combination of said first and second binary image outputs against a given reference pattern.
Claim 2
Dependent Claim
30 words
An image processing device according to claim 1, wherein said binary processing unit contains an OR circuit to generate a logical sum of said first and second binary image outputs.
Claim 3
Dependent Claim
40 words
An image processing device according to claim 2, wherein each of said mark color extraction units counts a number of pixels of extracted one-color marks to output said number of pixels to said OR circuit and generate said logical sum.
Claim 4
Dependent Claim
68 words
An image processing device according to claim 1, further comprising a pattern shape extraction unit to extract said pattern, said pattern shape extraction unit divides said pattern into a number of area for detecting a density of said number of areas respectively, and said pattern matching unit calculates an average of goodness of fit against said given reference pattern based on said density of said number of areas.
Claim 5
Dependent Claim
29 words
An image processing device according to claim 4, further comprising a mark location detection unit to output a location data of said pattern to said pattern shape extraction unit.
Claim 6
Dependent Claim
43 words
An image processing device according to claim 1, further comprising a density detection unit to count a number of pixels in a predetermined area consisting said pattern, and convert said predetermined area to a single pixel data to generate a distribution of density.
Claim 7
Dependent Claim
34 words
An image processing device according to claim 1, wherein said a pattern matching unit matches said pattern in said binary image output against a given reference pattern based on more than two matching algorithms.
Claim 8
Dependent Claim
106 words
A copy machine containing an image processing device to detect a particular mark of a given shape and color in a received image data of a color image, comprising: a binary processing unit containing a first mark color extracting unit to detect said particular marks of a first color and generate a first binary image output; said binary processing unit also containing a second mark color extracting unit to detect said particular marks of a second color and generate a second binary image output; and a pattern matching unit to match a combination of said first and second binary image outputs against a given reference pattern.
Claim 9
Dependent Claim
105 words
A printer containing an image processing device to detect a particular mark of a given shape and color in a received image data of a color image, comprising: a binary processing unit containing a first mark color extracting unit to detect said particular marks of a first color and generate a first binary image output; said binary processing unit also containing a second mark color extracting unit to detect said particular marks of a second color and generate a second binary image output; and a pattern matching unit to match a combination of said first and second binary image outputs against a given reference pattern.
Claim 10
Dependent Claim
106 words
A fax machine containing an image processing device to detect a particular mark of a given shape and color in a received image data of a color image, comprising: a binary processing unit containing a first mark color extracting unit to detect said particular marks of a first color and generate a first binary image output; said binary processing unit also containing a second mark color extracting unit to detect said particular marks of a second color and generate a second binary image output; and a pattern matching unit to match a combination of said first and second binary image outputs against a given reference pattern.
Claim 11
Dependent Claim
56 words
An image processing method to determine whether a specified image can be found in an image which has been input, comprising the steps of: converting the input image to three binary data based on each of three colors; consolidating said three binary data; storing said consolidated data; and making said determination based on said consolidated data.
Claim 12
Dependent Claim
49 words
An image processing method to detect whether a specified pattern can be found in an input image data, comprising the steps of: converting said input image data to binary data; and determining whether said binary data is within a range of values for each of a plurality of colors.
Claim 13
Dependent Claim
47 words
An image processing method to detect whether a specified pattern can be found in an input image data, comprising the steps of: detecting a set of marks in said input data; and detecting if said set of marks are in a predetermined spatial relationship with each other.
References Cited (Backward Citations)
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