EP0514167A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image processing
Assignee: Canon Inc
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Filing: 1992-05-14
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Granted: —
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Expires: 2012-05-14
Abstract
Abstract It is an object of the present invention to provide an image processing apparatus which improves the quality of an inputted image by a simple arrangement and improves the efficiency of compression to overcome the drawbacks of conventional apparatus, i.e. the controls for noise removal and the adjustments to improve the compression efficiency, are large and complicated. In order to achieve this, an orthogonal transformer is provided and a system controller discriminates a DC component and high frequency component out of the output components from the orthogonal transformer. Furthermore, the system controller adjusts a shutter, focus, zoom, and the lens aperture of the lens unit of the image pickup section, or the gain of the image pickup processing circuit on the basis of the image quality indicated by the components.
Inventors
- 👤 Makoto Takayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 02:13
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/24; H04N23/00; H04N23/70; H04N23/72; H04N5/00; H04N5/14; H04N5/20; H04N5/21
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
73 words
An image processing apparatus which adds a predetermined processing to input image data and outputs the data, comprising: orthogonal transformation means for performing an orthogonal transformation on the input image data; component discrimination means for discriminating components which are outputted from the orthogonal transformation means; and image processing adjusting means for adjusting the image processing on the basis of the value of a component after selecting a desired component from the discriminated components.
Claim 2
Dependent Claim
49 words
An image processing apparatus according to Claim 1, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 3
Dependent Claim
24 words
An image processing apparatus according to Claim 1, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 4
Dependent Claim
24 words
An image processing apparatus according to Claim 2, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 5
Dependent Claim
83 words
An image processing apparatus which performs an orthogonal transformation on an input image signal and compresses the image signal, comprising: means for determining the coefficient of the DC component from transformation coefficients which are obtained by the orthogonal transformation; adding means for adding a predetermined brightness level to the coefficient of the DC coefficient; and means for adjusting the brightness level on the basis of the transformation coefficient, which includes the coefficient for which the brightness level was added by the adding means.
Claim 6
Dependent Claim
49 words
An image processing apparatus according to Claim 5, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 7
Dependent Claim
24 words
An image processing apparatus according to Claim 5, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 8
Dependent Claim
24 words
An image processing apparatus according to Claim 6, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 9
Dependent Claim
47 words
An image processing apparatus which performs an orthogonal transformation on an image signal and compresses the image signal comprising control means for controlling the range of the image signal by the coefficient of the DC component of the output of the orthogonal transformation before the orthogonal transformation.
Claim 10
Dependent Claim
49 words
An image processing apparatus according to Claim 9, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 11
Dependent Claim
24 words
An image processing apparatus according to Claim 9, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 12
Dependent Claim
24 words
An image processing apparatus according to Claim 10, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 13
Dependent Claim
86 words
An image processing apparatus comprising: recursive type noise reduction means for reducing noise of image information; orthogonal transformation means for performing an orthogonal transformation on the image in which the noise has been already reduced by the noise reduction means; quantizing means for quantizing the output of the orthogonal transformation means; coding means for coding the output of the orthogonal transformation means; and control means for controlling a noise reduction level of the noise reduction means by an orthogonal transformation coefficient of the orthogonal transformation means.
Claim 14
Dependent Claim
49 words
An image processing apparatus according to Claim 13, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 15
Dependent Claim
24 words
An image processing apparatus according to Claim 13, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 16
Dependent Claim
24 words
An image processing apparatus according to Claim 14, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 17
Dependent Claim
74 words
An image processing apparatus comprising: a photographing optical system; image pickup means for converting an optical image by the photographing optical system to the image signal; coding means for performing an orthogonal transformation on the image information by the image pickup means and coding the image information; and control means for controlling the quantity of exposure of the image pickup means in accordance with the coefficient of the orthogonal transformation in the coding means.
Claim 18
Dependent Claim
49 words
An image processing apparatus according to Claim 17, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 19
Dependent Claim
24 words
An image processing apparatus according to Claim 17, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 20
Dependent Claim
24 words
An image processing apparatus according to Claim 18, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 21
Dependent Claim
58 words
An image processing apparatus comprising: orthogonal transformation means for transforming image information by an orthogonal transformation means; quantizing means for quantizing the output of the orthogonal transformation means; and control means for controlling a characteristic of quantization of the quantizing means in accordance with a DC component and AC component of the output by the orthogonal transformation means.
Claim 22
Dependent Claim
49 words
An image processing apparatus according to Claim 21, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 23
Dependent Claim
24 words
An image processing apparatus according to Claim 21, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 24
Dependent Claim
24 words
An image processing apparatus according to Claim 22, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 25
Dependent Claim
65 words
An image processing apparatus comprising: image pickup means; image data compression means for performing the image data compression on the output of the image pickup means by an orthogonal transformation coder; and exposure quantity determination means for determining whether or not a predetermined quantity of the exposure has been reached on the basis of the coefficient of the DC component of the orthogonal transformation coder.
Claim 26
Dependent Claim
49 words
An image processing apparatus according to Claim 25, further comprising: image pickup means for photographing an image and converting it into the input image data; and image pickup adjusting means for adjusting the image pickup means on the basis of the output signal of the image processing adjusting means.
Claim 27
Dependent Claim
24 words
An image processing apparatus according to Claim 25, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 28
Dependent Claim
24 words
An image processing apparatus according to Claim 26, further comprising: coding means for coding the image data which was transformed by the orthogonal transformation.
Claim 29
Independent Claim
41 words
A method or apparatus for processing video data, comprising video compression means having a first processing stage and a second processing stage, characterised by means for adjusting a parameter of the video data between said first stage and said second stage.
Claim 30
Dependent Claim
16 words
A method or apparatus according to Claim 29, wherein said first stage performs an orthogonal transform.
Claim 31
Dependent Claim
19 words
A method or apparatus according to Claim 29 or Claim 30, wherein the adjusted parameter is the video brightness.
Claim 32
Dependent Claim
19 words
A method or apparatus according to Claim 29 or Claim 30, wherein the adjusted parameter is a peak level.
Claim 33
Independent Claim
41 words
A method or apparatus for processing video data, comprising video compression means having a first stage and a second stage, characterised in that data obtained from said first stage is used to control the operation of a video signal generating device.
Claim 34
Dependent Claim
17 words
A method or apparatus according to claim 33, wherein said video generating device is a video camera.
Claim 35
Dependent Claim
31 words
A method or apparatus according to Claim 34, wherein said signal is used to control the operation of a lens drive circuit or a shutter drive circuit of said video camera.
References Cited (Backward Citations)
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