COMP-I is a program under the DARPA MONTAGE program focusing on the construction of thin digital imaging systems. COMP-I uses optical prefilters to encode the impulse response of multiple aperture imaging systems. The COMP-I program is near the completion of phase I development and has produced both visible and IR imaging systems based on focal plane coding and diffractive coding elements. This talk will review the design philosophy of COMP-I and describe recent experimental results. The talk will focus in particular on image inference strategies from compressively sampled measurements.