said model parameter identification unit identifies the model parameter from the simultaneous equations describing the input/output relationship using {HEAD ~ the two dimensional linear prediction model} regarding {TAIL ~ each pixel} of the to be tested image as an output and letting the linear coupling of pixels around each pixel be an input with respect to the decomposition images corresponding in number to the reference points and a reference frequency division image which does not generate decomposition images 
said model parameter identification unit identifies the model parameter from the simultaneous equations describing the input / output relationship using { HEAD ~ the two dimensional linear prediction model } regarding { TAIL ~ each pixel } of the to be tested image as an output and letting the linear coupling of pixels around each pixel be an input with respect to the decomposition images corresponding in number to the reference points and a reference frequency division image which does not generate decomposition images
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