Patent ID: 7822240

Claim:
An image processing device, comprising: an input for receiving a time series of data sets representing comparable volume-based digital images, each data set comprising a position component and an intensity component, preprocessing means for modifying the data sets so as to obtain images registered geometrically and intensity-wise, and comparative processing means for examining sets of time series of image elements, so as to detect signs of variation therein, characterized in that the comparative processing means comprise: a modeling function, fitting a predetermined parametric model separately over at least one of the sets of time series of image elements, thereby providing information pairs of the kind: image element, time, wherein the predetermined parametric model is of the asymmetric Gaussian type, comprising a maximum amplitude parameter, a minimum amplitude parameter, a reference width parameter and a dissymmetry parameter; and a function for statistical analysis of the information pairs, which isolates those of the information pairs that are representative of a significant variation; and outputting means for displaying the obtained images.