Method for tracking a target acoustic source

A method of processing an acoustic image comprising the following steps:

• a) acquiring acoustic signals generated by acoustic sources in a predetermined region of space;
• b) generating a multispectral 3D acoustic image (1), consisting of a collection of 2D acoustic images, each 2D acoustic image being formed by transposition of a position of each of the acquired acoustic sources into a grayscale or color model, each 2D acoustic image being identified by a single frequency or a frequency band, such that each 2D acoustic image has the position of each of the acquired audio sources marked thereon along axes of coordinates of the 2D acoustic image, for spatial allocation of the acquired acoustic sources;
• c) performing a frequency integration of said multispectral 3D acoustic image for generating a 2D acoustic map;
• d) locating at least one target acoustic source of interest and modeling a signal spectrum associated with said target acoustic source;
• e) generating a classification map obtained by comparing the signal spectrum of each signal associated with each pixel of said multispectral acoustic image and a model of the signal spectrum associated with said target acoustic source, the step of comparing being obtained by training a classification algorithm, said classification algorithm being executed for each pixel of said multispectral acoustic image, to thereby distinguish the spectrum of the signal associated with the target acoustic source from the signal spectra associated with remaining acoustic sources;
• and
• f) merging said classification map and said acoustic map to obtain a merged map.