EP0295105A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image processing apparatus
Assignee: Canon Inc
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Filing: 1988-06-09
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Granted: —
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Expires: 2008-06-09
Abstract
Abstract In a method of reading an image by dividing it into plural areas and reading these divided areas in succession, continuity is given to the data of plural areas by conducting digitization in overlapping manner over the neighboring areas, in order to avoid formation of a streak at the boundary of the divided areas.
Inventors
- 👤 Nao Nagashima
- 👤 Hiroyuki Canon Musashishinden-Ryo Ichikawa
- 👤 Akihiro Dainiasahi-So Katayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/1911; H04N1/0402; H04N1/0417; H04N1/12; H04N1/126; H04N1/128; H04N1/40; H04N1/405; H04N1/4051; H04N1/4052; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0414; H04N2201/0426
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
54 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; and process means for digitizing the image data from said reading means; wherein said process means is adapted, in digitizing of the image data, to give continuity to the plural areas read by said reading means.
Claim 2
Dependent Claim
54 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; and process means for digitizing the image data from said reading means; wherein said process means is adapted, in digitizing of the image data, to give continuity to the plural areas read by said reading means.
Claim 3
Dependent Claim
27 words
An image processing apparatus according to Claim 1, wherein said process means is adapted to digitize said image data into binary data by the error dispersion method.
Claim 4
Dependent Claim
35 words
An image processing apparatus according to Claim 1, wherein said process means is adapted, in digitizing the image data of an object area, to digitize the image data of a preceding area in overlapped manner.
Claim 5
Dependent Claim
36 words
An image processing apparatus according to Claim 3, wherein said process means is adapted, in digitizing the image data of an object area, to digitize the image data of preceding and succeeding areas in overlapped manner.
Claim 6
Dependent Claim
54 words
An image processing apparatus according to Claim 2, wherein said process means comprises memory means for storing error data from an area preceding the object area, and is adapted, in the digitizing of the image data of said object area, to conduct the digitizing based on the error data stored in said memory means.
Claim 7
Dependent Claim
34 words
An image processing apparatus according to Claim 5, wherein said process means is further adapted to conduct the digitizing of the image data of an area succeeding to the object area in overlapped manner.
Claim 8
Dependent Claim
47 words
An image processing apparatus according to Claim 2, wherein said process means is adapted, in the digitizing of the image data by the error dispersion method, to conduct the digitizing with a matrix that does not distribute the errors from the object area to the preceding area.
Claim 9
Dependent Claim
41 words
An image processing apparatus according to Claim 1, further comprising memory means for storing the image data of at least one of said plural areas, wherein said process means is adapted to digitize the image data stored in said memory means.
Claim 10
Dependent Claim
73 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; process means for digitizing the image data from said reading means; and memory means for storing the information on a jointing portion of said areas; wherein said process means is adapted, in the jointing portion of said areas, to conduct digitizing based on the information stored in said memory means and on the image data.
Claim 11
Dependent Claim
73 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; process means for digitizing the image data from said reading means; and memory means for storing the information on a jointing portion of said areas; wherein said process means is adapted, in the jointing portion of said areas, to conduct digitizing based on the information stored in said memory means and on the image data.
Claim 12
Dependent Claim
27 words
An image processing apparatus according to Claim 9, wherein said process means is adapted to digitize said image data into binary data by the error dispersion method.
Claim 13
Dependent Claim
32 words
An image processing apparatus according to Claim 9, wherein said memory means is adapted to store the information of an area preceding the object area to be processed by said process means.
Claim 14
Dependent Claim
32 words
An image processing apparatus according to Claim 11, wherein the information stored in said memory means is error data generated in the digitizing of the image data by the error dispersion method.
Claim 15
Dependent Claim
43 words
An image processing apparatus according to Claim 12, wherein said process means is adapted to conduct digitizing based on the error data from an area preceding the object area, stored in the memory means, and on the image data of said object area.
Claim 16
Dependent Claim
74 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; and process means for digitizing the image data from said reading means; wherein said reading means is adapted to read the image data of an area neighboring the object area to be processed by said process means in overlapping manner, and said process means is adapted to digitize the image data read in thus overlapped manner.
Claim 17
Dependent Claim
74 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; and process means for digitizing the image data from said reading means; wherein said reading means is adapted to read the image data of an area neighboring the object area to be processed by said process means in overlapping manner, and said process means is adapted to digitize the image data read in thus overlapped manner.
Claim 18
Dependent Claim
29 words
An image processing apparatus according to Claim 14, further comprising means for extracting the image data of the object area, from the image data digitized by said process means.
Claim 19
Dependent Claim
32 words
An image processing apparatus according to Claim 14, wherein said reading means is adapted to read, in overlapped manner, a part of the image data of an area preceding said object area.
Claim 20
Dependent Claim
33 words
An image processing apparatus according to Claim 14, wherein said reading means is adapted to read, in overlapped manner, a part of the image data of an area succeeding to said object area.
Claim 21
Dependent Claim
27 words
An image processing apparatus according to Claim 14, wherein said process means is adapted to digitize said image data into binary data by the error dispersion method.
Claim 22
Dependent Claim
98 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; process means for digitizing the image data from said reading means; and memory means for storing the information of a jointing portion of said areas; wherein said reading means is adapted to read, in overlapped manner, the image data of an area neighboring to the area to be processed by said process means, and said process means is adapted to conduct digitizing based on the information stored in said memory means and the image data read in thus overlapped manner.
Claim 23
Dependent Claim
98 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; process means for digitizing the image data from said reading means; and memory means for storing the information of a jointing portion of said areas; wherein said reading means is adapted to read, in overlapped manner, the image data of an area neighboring to the area to be processed by said process means, and said process means is adapted to conduct digitizing based on the information stored in said memory means and the image data read in thus overlapped manner.
Claim 24
Dependent Claim
27 words
An image processing apparatus according to Claim 19, wherein said process means is adapted to digitize said image data into binary data by the error dispersion method.
Claim 25
Dependent Claim
32 words
An image processing apparatus according to Claim 19, wherein said memory means is adapted to store the information of an area preceding the object area to be processed by said process means.
Claim 26
Dependent Claim
32 words
An image processing apparatus according to Claim 21, wherein the information stored in said memory means is error data generated in the digitizing of the image data by the error dispersion method.
Claim 27
Dependent Claim
29 words
An image processing apparatus according to Claim 19, further comprising means for extracting the image data of the object area, from the image data digitized by said process means.
Claim 28
Dependent Claim
33 words
An image processing apparatus according to Claim 19, wherein said reading means is adapted to read, in overlapped manner, a part of the image data of an area succeeding to said object area.
Claim 29
Dependent Claim
64 words
An image processing apparatus according to Claim 19, wherein said process means is adapted to conduct the digitizing, in a jointing portion between the object area and the preceding area, based on the information stored in said memory means and the image data, and, in a jointing portion between the object area and the succeeding area, on the image data obtained in overlapped reading.
Claim 30
Dependent Claim
67 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; a memory for storing the image data of said areas obtained from said reading means; means for reading the image data stored in said memory in a sequence different from the sequence of storage in said memory; and process means for digitizing the image data read from said memory.
Claim 31
Dependent Claim
67 words
An image processing apparatus comprising: reading means for reading an image by dividing said image into plural areas; a memory for storing the image data of said areas obtained from said reading means; means for reading the image data stored in said memory in a sequence different from the sequence of storage in said memory; and process means for digitizing the image data read from said memory.
Claim 32
Dependent Claim
22 words
An image processing apparatus according to Claim 26, further comprising a second memory for storing image data digitized by said process means.
Claim 33
Dependent Claim
27 words
An image processing apparatus according to Claim 26, wherein said process means is adapted to digitize said image data into binary data by the error dispersion method.
Claim 34
Dependent Claim
56 words
An image processing method comprising: a step of reading an image by dividing said image into plural areas; and a process step of digitizing the image data obtained in said reading step; wherein said process step is adapted, in digitizing of the image data, to give continuity to the plural areas read in said reading step.
Claim 35
Dependent Claim
56 words
An image processing method comprising: a step of reading an image by dividing said image into plural areas; and a process step of digitizing the image data obtained in said reading step; wherein said process step is adapted, in digitizing of the image data, to give continuity to the plural areas read in said reading step.
Claim 36
Dependent Claim
27 words
An image processing method according to Claim 29, wherein said process step is adapted to digitize said image data into binary data by the error dispersion method.
Claim 37
Dependent Claim
35 words
An image processing method according to Claim 29, wherein said process step is adapted, in digitizing the image data of an object area, to digitize the image data of a preceding area in overlapped manner.
Claim 38
Dependent Claim
35 words
An image processing method according to Claim 29, wherein said process step is adapted, in digitizing the image data of an object area, to digitize the image of preceding and succeeding areas in overlapped manner.
Claim 39
Dependent Claim
54 words
An image processing method according to Claim 30, wherein said process step utilizes memory means for storing error data from an area preceding the object area, and is adapted, in the digitizing of the image data of said object area, to conduct the digitizing based on the error data stored in said memory means.
Claim 40
Dependent Claim
34 words
An image processing method according to Claim 33, wherein said process step is further adapted to conduct the digitizing of the image data of an area succeeding to the object area in overlapped manner.
Claim 41
Dependent Claim
47 words
An image processing method according to Claim 30, wherein said process step is adapted, in the digitizing of the image data by the error dispersion method, to conduct the digitizing with a matrix that does not distribute the errors from the object area to the preceding area.
Claim 42
Dependent Claim
42 words
An image processing method according to Claim 29, wherein said process step further utilizes memory means for storing the image data of at least one of said plural areas, and is adapted to digitize the image data stored in said memory means.
References Cited (Backward Citations)
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