Reduction of artefacts in reproduced images
AssigneeGretag Imaging Trading AG
InventorsStephan Waldner, Armin Kündig, Guido Keller
Life of this patent
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Abstract
A process for the reduction of artefacts during the reproduction of an image based on image data and having a plurality of image points, by a specific image reproducing device is disclosed, whereby the image points have appearance properties, the process including the following steps: device characteristics which describe the appearance properties of image points produced by the specific image reproducing device in answer to image data and describe the dependence of the appearance properties on the position assigned to the image data, are provided or input, reproduction image data are input, and the image data corrected based on the device characteristics and depending on the positions assigned to the image data.
Claims13
A process for the reduction of artefacts during the reproduction of an image having a plurality of image points based on image data and by way of a specific image reproducing device, whereby the image points have appearance properties and are produced by the specific image reproducing device in answer to control values, wherein said appearance properties influence or determine the visual or optical appearance of the image points in the image and wherein the image data set nominal appearance properties of the image points, the process comprising the steps of:
- at least one of providing and inputting device characteristics of the image reproducing device which describe an influence on the appearance properties of the image points depending on positions of the image points and depending on properties of the specific image reproducing device, said influence resulting in a deviation of the appearance properties from the nominal properties;
- inputting image data;
- and
- setting control values for the production of image points by the image reproducing device based on the image data associated with the image points and under consideration of the influence on the appearance properties of the image points to be reproduced, the influence being determined depending on the positions of the image points and based on the device characteristics.
Program which when at least one of loaded on a computer and running on a computer, initiates the computer to carry out a process for the reduction of artefacts during the reproduction of an image having a plurality of image points based on image data and by way of a specific image reproducing device, whereby the image points have appearance properties and are produced by the specific image reproducing device in answer to control values, wherein said appearance properties influence or determine the visual or optical appearance of the image points in the image and wherein the image data set the nominal appearance properties of the image points, the process comprising the steps of:
- at least one of providing and inputting device characteristics of the image reproducing device which describe an influence on the appearance properties of the image points depending on positions of the image points and depending on properties of the specific image reproducing device, said influence resulting in a deviation of the appearance properties from the nominal appearance properties;
- inputting image data;
- and
- setting control values for the production of image points by the image reproducing device based on the image data associated with the image points and under consideration of the influence on the appearance properties of the image points to be reproduced, the influence being determined depending on the positions of the image points and based on the device characteristics, wherein the device characteristics at least one of can be input into the program and are components of the program code.
Image reproducing device with a control device for carrying out a process for the reduction of artefacts during the reproduction of an image having a plurality of image points based on image data and by way of a specific image reproducing device, whereby the image points have appearance properties and are produced by the specific image reproducing device in answer to control values, wherein said appearance properties influence or determine the visual or optical appearance of the image points in the image and wherein the image data set nominal appearance properties of the image points, the process comprising the steps of:
- at least one of providing and inputting device characteristics of the image reproducing device which describe an influence on the appearance properties of the image points depending on positions of the image points and depending on properties of the specific image reproducing device, said influence resulting in a deviation of the appearance properties from the nominal appearance properties;
- inputting image data;
- and
- setting control values for the production of image points by the image reproducing device based on the image data associated with the image points and under consideration of the influence on the appearance properties of the image points to be reproduced, the influence being determined depending on the positions of the image points and based on the device characteristics, wherein the control values are at least one of used for the image reproduction and output through a digital interface.
Photographic lab for at least one of the reproduction of photographic image data and for the output of at least one of the control values and data derived therefrom, the photographic lab comprising:
- at least one image reproducing device with a control device for carrying out a process for the reduction of artefacts during the reproduction of an image having a plurality of image points based on image data and by way of a specific image reproducing device, whereby the image points have appearance properties and are produced by the specific image reproducing device in answer to control values, wherein said appearance properties influence or determine the visual or optical appearance of the image points in the image and wherein the image data set nominal appearance properties of the image points, the process comprising the steps of:
- at least one of providing and inputting device characteristics of the image reproducing device which describe an influence on the appearance properties of the image points depending on positions of the image points and depending on properties of the specific image reproducing device, said influence resulting in a deviation of the appearance properties from the nominal appearance properties;
- inputting image data;
- and
- setting control values for the production of image points by the image reproducing device based on the image data associated with the image points and under consideration of the influence on the appearance properties of the image points to be reproduced, the influence being determined depending on the positions of the image points and based on the device characteristics, wherein the control values are at least one of used for the image reproduction and output through a digital interface.
Dependencies are inferred from the claim text.