Adaptive optics image acquisition method

Method for acquisition of an image by an imager comprising a matrix of pixels configured to generate an electric response when exposed to an incident light flux travelling through an optical path in which is arranged a wavefront correction element, the imager being adapted to allow for a non-destructive reading of electric responses of pixels during the exposure, the method comprising:

• 1) initiating an exposure of the pixels of the matrix of pixels to the incident light flux;
• 2) for a plurality of iterations during the exposure of the pixels:
• 2.1) non-destructive reading of the electric responses of pixels of a region of interest;
• 2.2) determining an evolution of a spatial distribution of pixels in logarithmic mode with respect to a previous iteration on the basis of the electric responses of the pixels of the region of interest, said evolution representative of a fluctuation in a wavefront of the incident light flux between this iteration and the previous iteration;
• 2.3) based on said evolution, establishing a command for the wavefront correction element in order to correct the wavefront of the light flux;
• 2.4) configuring the wavefront correction element through the command,
• 3) reading the electric responses of the pixels of the matrix of pixels resulting in the image.