Method and system for modifying a digital image taking into account it's noise

A system for obtaining a transformed image from a digital image of an appliance chain, comprising:

• data-processing means for automatically determining characteristic noise data from formatted information related to defects of the appliance chain and/or from the digital image;
• computer processing means for calculating the transformed image from the formatted information and from the characteristic noise data wherein
• the transformed image does not exhibit a visible defect related to noise, and
• the data-processing means for automatically determining the characteristic noise data includes:
• means for selecting an analysis zone over the digital image as a function of an appliance of the appliance chain and/or the formatted information,
• means for calculating local brightness variations over the analysis zone, and
• means for determining the characteristic noise data by constructing a histogram of occurrences of the local brightness variations over the analysis zone, and selecting on the histogram at least one part of a part situated before a first local maximum such that local brightness variations related to the noise are obtained.