EP0411911A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image processing apparatus
Assignee: Canon Inc
•
Filing: 1990-07-31
•
Granted: —
•
Expires: 2010-07-31
Abstract
Abstract An image processing apparatus includes a first detection unit for detecting an edge of an input image on the basis of an input image signal, a second detection unit for detecting a screen portion of the input image on the basis of the input image signal, a processing unit for executing processing of the input image signal according to detection results of the first and second detection units, and a setting unit for setting detection modes of the first and second detection units.
Inventors
- 👤 Masahiro Funada
- 👤 Michio Kawase
- 👤 Shinobu Arimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/58; G; G06; G06T; G06T11/00; G06T11/60; G06T7/00; G06T7/10; G06T7/12; H04N1/40; H04N1/40062; G06T2207/00; G06T2207/10; G06T2207/10016; G06T2207/30; G06T2207/30108; G06T2207/30144
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
83 words
An image processing apparatus comprising: a) first detection means for detecting an edge of an input image on the basis of an input image signal; b) second detection means for detecting a screen portion of the input image on the basis of said input image signal; c) processing means for executing processing of said input image signal according to detection results of said first and second detection means; and d) setting means for setting detection modes of said first and second detection means.
Claim 2
Dependent Claim
83 words
An image processing apparatus comprising: a) first detection means for detecting an edge of an input image on the basis of an input image signal; b) second detection means for detecting a screen portion of the input image on the basis of said input image signal; c) processing means for executing processing of said input image signal according to detection results of said first and second detection means; and d) setting means for setting detection modes of said first and second detection means.
Claim 3
Dependent Claim
76 words
An image processing apparatus comprising: a) first detection means for detecting a change in density of an input image signal; b) second detection means for detecting a change in density in a specific direction of said input image signal; c) processing means for executing processing of said input image signal according to detection results of said first and second detection means; and d) setting means for setting detection modes of said first and second detection means.
Claim 4
Dependent Claim
76 words
An image processing apparatus comprising: a) first detection means for detecting a change in density of an input image signal; b) second detection means for detecting a change in density in a specific direction of said input image signal; c) processing means for executing processing of said input image signal according to detection results of said first and second detection means; and d) setting means for setting detection modes of said first and second detection means.
Claim 5
Dependent Claim
46 words
An image processing apparatus comprising: a) detection means for detecting a feature of an input image on tho basis of an input image signal; and b) setting means for setting a detection mode of said detection means, wherein said detection mode includes a map detection mode.
Claim 6
Dependent Claim
46 words
An image processing apparatus comprising: a) detection means for detecting a feature of an input image on tho basis of an input image signal; and b) setting means for setting a detection mode of said detection means, wherein said detection mode includes a map detection mode.
Claim 7
Dependent Claim
33 words
An apparatus according to claim 1 or 2, wherein said first detection means detects the edge of said input image according to continuity of a change in density of said input image signal.
Claim 8
Dependent Claim
36 words
An apparatus according to claim 1 or 2, wherein said second detection means detects the screen portion of said input image according to a change in density in a specific direction of said input image signal.
Claim 9
Dependent Claim
36 words
An apparatus according to claim 1 or 2, wherein said setting means sets a first mode for outputting the detection result of image as an edge regardless of the detection result of said first detection means.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 1 or 2, wherein said setting means sets a second mode for cancelling the detection result of said first detection means when the screen portion is detected by said second detection means.
Claim 11
Dependent Claim
26 words
An apparatus according to claim 1 or 2, wherein said setting means sets a third mode for cancelling the detection result of said first detection means.
Claim 12
Dependent Claim
26 words
An apparatus according to claim 1 or 2, wherein said setting means sets a fourth mode for cancelling the detection result of said second detection means.
Claim 13
Dependent Claim
36 words
An apparatus according to claim 1 or 2, wherein said processing means comprises judgement means for judging a black character of said input image according to the detection results of said first and second detection means.
Claim 14
Dependent Claim
27 words
An apparatus according to claim 10, wherein said processing means comprises reproduction means for reproducing said input image according to a judgement result of said judgement means.
Claim 15
Dependent Claim
22 words
An apparatus according to claim 11, wherein said reproduction means performs reproduction using only a black recording agent for said black character.
Claim 16
Dependent Claim
18 words
An apparatus according to claim 2, wherein said fIrst detection means detects an edge of the input image.
Claim 17
Independent Claim
19 words
An apparatus according to cIaim 2, wherein said second detection means detects a screen portion of the input image.
Claim 18
Independent Claim
19 words
An apparatus according to cIaim 2, wherein said second detection means detects a screen portion of the input image.
Claim 19
Dependent Claim
15 words
An apparatus according to claim 3, wherein said feature is an edge of an image.
Claim 20
Dependent Claim
16 words
An apparatus according to claim 3, wherein said feature is a screen portion of an image.
Claim 21
Dependent Claim
35 words
An apparatus according to claim 3, wherein said detection means includes first detection means for detecting an edge of said input image according to continuity of a change in density of said input image signal.
Claim 22
Dependent Claim
38 words
An apparatus according to claim 17, wherein said detection means includes second detection means for detecting a screen portion of said input image according to a change in density in a specific direction of said input image signal.
Claim 23
Dependent Claim
29 words
An apparatus according to claim 18, further comprising processing means for processing said input image signal according to a detection result of said detection means and performing image reproduction.
Claim 24
Dependent Claim
22 words
An apparatus according to claim 19, wherein said processing means comprises judgement means for judging a black character of said input image.
Claim 25
Dependent Claim
20 words
An apparatus according to claim 20, wherein said processing means reproduces said black character using only a black recording agent.
Claim 26
Dependent Claim
15 words
An apparatus according to claim 21, wherein said setting means comprises manual key input means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.