Verfahren und Vorrichtung zur Bildzurückstellung mit einer gewichteten Phasenkorrelation für die Bestimmung einer Ver- schiebung.

摘要

The matching process according to the invention employs phase correlation, that is to say correlation between the two-dimensional discrete transforms of a reference image and of a current image, normalised with respect to its modulus, then an inverse Fourier transformation of the correlation matrix obtained in order to find a correlation peak in the spatial domain of the images, in which, in order to diminish the effects of noise in this processing and enhance the mean components, a weighting function is applied to the correlation matrix in the transformed plane before carrying out the inverse Fourier transformation. The invention applies to the matching of images by translation, especially to those obtained by infrared sensors.