Custom Panorama Software

I need some software to be developed that can stitch photos together. The photos are taken along rows and columns in a grid using a gantry system that is accurate to the mm. This means photos can overlap to a very precise amount that should enable stitching to be much easier/quicker. PTGui (based off PanoTools can do a great job of this with the "align to grid" feature. It is fast and accurate which is what I need. However, I feel it can be done faster with more advanced settings due to my photos precise attributes thanks to the accuracy of the gantry system. Basically, I need PTGui's functionality, without all the res tof the features, and a more advanced "align to grid" feature.