Coded aperture design for compressive X-ray tomosynthesis via coherence analysis

The design of coded apertures for compressive X-ray tomosynthesis is addressed here, based on the analysis of the coherence of the sensing matrix. It is shown that minimizing the inner products between the columns of the transfer function matrix, it is possible to obtain significant improvements with respect to the results obtained with the use of random codes. The computational cost of optimization is dramatically lower than other approaches introduced recently.