Method of controlling a recording device with picture data of a halftone picture
AssigneeStefan Brues
InventorStefan Brues
Life of this patent
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Abstract
The invention relates to a method of controlling a recording device with picture data of a halftone picture, in which the halftone picture is converted into a three-dimensional input data field, then a surface function which reproduces the surface structure of this input data filed is determined and finally from this surface function a three-dimensional output data field is derived, the resolution of which into individual picture elements corresponds to the resolution of the recording device. Such a method permits optimum control of a recording device even when the scanning device used for scanning the halftone picture and the recording device have a differing picture resolution.
Claims10
A method of producing an output data field for a recording device from picture data that represent a halftone picture, in which a scanning device used for scanning the halftone picture and the recording device can have a different picture resolution, characterized by the following method steps:
- (a) converting at least a portion of the halftone picture into an input data field that represents the halftone picture in three-dimensional space, with two dimensions representing the relative locations of the picture data within the halftone picture and the third dimension representing the brightness of the picture data at those locations;
- (b) determining a surface function which approximates the surface structure of the input data field in the three-dimensional space;
- and
- (c) using the surface function to generate the output data field with a resolution corresponding to the resolution of the recording device.
Dependencies are inferred from the claim text.