Patent ID: 9524564
Filing Date: 2016-12-20
CPC Classification: G06T

Claim Text:
1. Method for the viewing, by an operator, of a multispectral image formed of a plurality of spectral images of a same scene that were captured at a same moment in separate respective spectral ranges, the method comprising the following successive steps: /1/ defining a combination operation for combining two intensity values to produce a new intensity value resulting from the combination; /2/ on a screen comprising a matrix of pixels presented to the operator, displaying a representation of the scene consisting of initial intensity values respectively assigned to all the pixels of the matrix, and which are obtained on the basis of at least one of the spectral images; /3/ for a first window which is smaller than the matrix, and for a selection of several spectral images, determining a Fisher projection from the initial intensity values of the selected spectral images, said Fisher projection being determined in order to optimize a contrast of a linear combination of spectral images of the selection within the first window; /4/ for each pixel within the first window, calculating an intermediate intensity value by performing the following sub-steps: /5/ updating the representation of the scene that is displayed on the screen by replacing, for at least some of the pixels contained in the first window, the initial intensity value by the intermediate intensity value calculated in step /4/; /6/ repeating steps /3/ and /4/ for a second window which is smaller than the matrix, different from the first window and having pixels in common therewith, and for the same selection of spectral images; and /7/ once again updating the representation of the scene which is displayed on the screen, in the following manner, based on the representation obtained at the end of step /5/: the combination operation for the intensity values being defined in step /1/ so that the representation of the scene which is obtained in step /7/ contains a trace of the representation of said scene as resulting from the prior execution of step /5/, including a visibility of the position of the first window and of image elements revealed in said first window.