Restoration of astrophysical images - the case of Poisson Gamma data

Very recent technology proposes to acquire astrophysic data with L3CCD cameras in order to avoid the read-out noise due to the classical CCD acquisition. The physical process leading to the data has been previously described by a “Poisson Gamma” density. We propose to discuss the model and to derive an iterative algorithm for the deconvolution of such data. Some simulation results are given on synthetic astrophysic data pointing out the interest of L3CCD cameras for acquisition of very low intensity images.