1. A non-transitory computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to: acquire a set of projections from an object using a computed tomography (CT) imaging system; reconstruct an initial image of the scanned object from the set of projections, the reconstructed initial image comprising a plurality of pixels; identify a candidate pixel within the plurality of pixels; apply a nonlinear enhancement to the candidate pixel to iteratively adjust an intensity value of the candidate pixel; and generate a final image using the adjusted intensity value of the candidate pixel.