US5353132A
Expired / Lapsed
US
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Image processing device
Assignee: Canon Inc
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Filing: 1992-06-22
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Granted: 1994-10-04
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Expires: 2012-06-22
Abstract
Abstract The type of color image is identified on the basis of a distribution of color information for each color. A plurality of different types of data compression algorithms prepared beforehand are changed according to the results of the identification. Preferably, the difference between the maximum value and the minimum value of each picture element of respective color separation data of a color image is determined, and further, a histogram of frequency of color information obtained for each color is determined. On the basis of the histogram, the type of the color image is identified by the fact that whether or not the histogram contains a peak greater than a predetermined value or whether or not the deviation of the histogram is greater than a predetermined value.
Inventors
- 👤 Makoto Katsuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:21
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41; G; G06; G06T; G06T7/00; G06T7/90; G06T9/00; G06T9/005; G06T2207/00; G06T2207/10; G06T2207/10004; G06T2207/10008; G06T2207/30; G06T2207/30176
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
141 words
An image processing device comprising: input means for inputting a plurality of color component signals representing a color image; identification means for identifying a type of the color image on the basis of the plurality of color component signals from said input means; first compression means for compressing the color component signals from said input means by using an information-preserving-type of encoding method; second compression means for compressing the color component signals from said input means by using an information-non-preserving-type of encoding method; selection means for selecting one of said first and second compression means in accordance with the type of the color image identified by said identification means; and storage means for storing compressed color component signals from said first or second compression means together with identification data representing the type of the color image identified by said identification means.
Claim 2
Dependent Claim
141 words
An image processing device comprising: input means for inputting a plurality of color component signals representing a color image; identification means for identifying a type of the color image on the basis of the plurality of color component signals from said input means; first compression means for compressing the color component signals from said input means by using an information-preserving-type of encoding method; second compression means for compressing the color component signals from said input means by using an information-non-preserving-type of encoding method; selection means for selecting one of said first and second compression means in accordance with the type of the color image identified by said identification means; and storage means for storing compressed color component signals from said first or second compression means together with identification data representing the type of the color image identified by said identification means.
Claim 3
Dependent Claim
22 words
An image processing device according claim 1, further comprising addition means for adding the identification data to the compressed color component signals.
Claim 4
Dependent Claim
25 words
An image processing device according to claim 2, wherein said storage means stores the compressed color component signals to which the identification data is added.
Claim 5
Dependent Claim
24 words
An image processing device according to claim 1, further comprising decompression means for decompressing the compressed color component signals stored in said storage means.
Claim 6
Dependent Claim
52 words
An image processing device according to claim 4, wherein said decompression means has a plurality of different types of decompression algorithms, and said decompression means decompresses the compressed color component signals by using a decompression algorithm which is selected in accordance with the identification data associated with the compressed color component signals.
Claim 7
Dependent Claim
32 words
An image processing device according to claim 1, wherein said identification means identifies the type of the color image on the basis of a histogram of frequency of the color component signals.
Claim 8
Dependent Claim
19 words
An image processing device according to claim 1, wherein said information-non-preserving-type of encoding method is a vector quantization method.
Claim 9
Dependent Claim
161 words
An image processing device comprising: input means for inputting a plurality of color component signals representing a color image; identification means for identifying a type of the color image on the basis of the plurality of color component signals from said input means; first compression means for compressing the color component signals from said input means by using an information-preserving-type of encoding method; second compression means for compressing the color component signals from said input means by using an information-non-preserving-type of encoding method; selection means for selecting one of said first and second compression means in accordance with the type of the color image identified by said identification means; storage means for storing compressed color component signals from said first or second compression means together with identification data representing the type of the color image identified by said identification means; and decompression means for decompressing the compressed color component signals stored in said storage means in accordance with the identification data.
Claim 10
Dependent Claim
161 words
An image processing device comprising: input means for inputting a plurality of color component signals representing a color image; identification means for identifying a type of the color image on the basis of the plurality of color component signals from said input means; first compression means for compressing the color component signals from said input means by using an information-preserving-type of encoding method; second compression means for compressing the color component signals from said input means by using an information-non-preserving-type of encoding method; selection means for selecting one of said first and second compression means in accordance with the type of the color image identified by said identification means; storage means for storing compressed color component signals from said first or second compression means together with identification data representing the type of the color image identified by said identification means; and decompression means for decompressing the compressed color component signals stored in said storage means in accordance with the identification data.
Claim 11
Dependent Claim
23 words
An image processing device according to claim 8, further comprising addition means for adding the identification data to the compressed color component signals.
Claim 12
Dependent Claim
25 words
An image processing device according to claim 9, wherein said storage means stores the compressed color component signals to which the identification data is added.
Claim 13
Dependent Claim
55 words
An image processing device according to claim 8, wherein said decompression means has a plurality of different types of decompression algorithms, and said decompression means decompresses the compressed color component signals by using any one of the decompression algorithm which is selected in accordance with the identification data associated with the compressed color component signals.
Claim 14
Dependent Claim
32 words
An image processing device according to claim 8, wherein said identification means identifies the type of the color image on the basis of a histogram of frequency of the color component signals.
Claim 15
Dependent Claim
20 words
An image processing device according to claim 8, wherein said information-preserving-type of encoding method is a run length encoding method.
Claim 16
Dependent Claim
19 words
An image processing device according to claim 8, wherein said information-non-preserving-type of encoding method is a vector quantization method.
Claim 17
Dependent Claim
101 words
An image processing method comprising the steps of: inputting a plurality of color component signals representing a color image; identifying a type of the color image on the basis of the plurality of color component signals; selecting one of an information-preserving-type of encoding method and an information-non-preserving-type of encoding method in accordance with the type of the color image identified in said identifying step; compressing the color component signals by using the selected encoding method; and storing the compressed color component signals in a memory together with identification data representing the type of the color image identified in said identifying step.
Claim 18
Dependent Claim
101 words
An image processing method comprising the steps of: inputting a plurality of color component signals representing a color image; identifying a type of the color image on the basis of the plurality of color component signals; selecting one of an information-preserving-type of encoding method and an information-non-preserving-type of encoding method in accordance with the type of the color image identified in said identifying step; compressing the color component signals by using the selected encoding method; and storing the compressed color component signals in a memory together with identification data representing the type of the color image identified in said identifying step.
Claim 19
Dependent Claim
20 words
An image processing method according to claim 15, wherein said information-preserving-type of encoding method is a run length encoding method.
Claim 20
Dependent Claim
19 words
An image processing method according to claim 15, wherein said information-non-preserving-type of encoding method is a vector quantization method.
Claim 21
Dependent Claim
118 words
An image processing method comprising the steps of: inputting a plurality of color component signals representing a color image; identifying a type of the color image on the basis of the plurality of color component signals; selecting one of an information-preserving-type of encoding method and an information-non-preserving type of encoding method in accordance with the type of the color image identified by said identifying step; compressing the color component signals by using the selected encoding method; storing the compressed color component signals in a memory together with identification data representing the type of the color image identified by said identifying step; and decompressing the compressed color component signals stored in said memory in accordance with the identification data.
Claim 22
Dependent Claim
118 words
An image processing method comprising the steps of: inputting a plurality of color component signals representing a color image; identifying a type of the color image on the basis of the plurality of color component signals; selecting one of an information-preserving-type of encoding method and an information-non-preserving type of encoding method in accordance with the type of the color image identified by said identifying step; compressing the color component signals by using the selected encoding method; storing the compressed color component signals in a memory together with identification data representing the type of the color image identified by said identifying step; and decompressing the compressed color component signals stored in said memory in accordance with the identification data.
Claim 23
Dependent Claim
20 words
An image processing device according to claim 1, wherein said information-preserving-type of encoding method is a run length encoding method.
Claim 24
Dependent Claim
20 words
An image processing method according to claim 18, wherein said information-preserving-type of encoding method is a run length encoding method.
Claim 25
Dependent Claim
19 words
An image processing method according to claim 18, wherein said information-non-preserving-type of encoding method is a vector quantization method.
References Cited (Backward Citations)
US4504972A
Cited
US4447829A
Cited
US4542411A
Cited
EP0096219A2
Cited
US4553261A
Cited
US4959868A
Cited
US4684997A
Cited
US4903317A
Cited
US4965754A
Cited
US5204756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |