Patent ID: 7457458

Claim:
An apparatus for defining and at least partially correcting errors of an image reproduction system, said errors being deviations between an image of predetermined quality and its reproduction, said errors being caused by defects related to color channels in the image reproduction system, comprising: image inputting means feeding N 2 neuronal nets for N color channels, with output of the neuronal nets being added and connected to inputs of an image reproduction device for correction of said N color channels; neuronal nets spatially coupling pixel values of different color channels of image data to be reproduced by mono-layered neuronal networks via space-variant weights, implemented on a predetermined circuit, comprising parameters established by a learning process on the basis of a reproduced test image of predetermined quality, a storage for image data to be reproduced that connects to inputs of the neuronal nets and feeds the pixel values of different color channels to the inputs of the neuronal nets as target data; and an image recording device, for generating digital data of an uncorrected image of a test image provided by the image reproduction device, connected to the inputs of the neuronal nets during the learning process for defining the parameters of the neuronal nets.