Make NDVI camera out of Serial L2 Camera

I am interested in converting an Serial Camera L2 module into an NDVI (Normalized Difference Vegetation Index) camera. Essentially this requires removing the IR block filter, adding a particular red or blue filter and some processing of the pixels.

I am looking for advice on is removing the IR block filter.

Has anyone done this or can anyone at GHI give me some advice on where it is?


ps; I know this will void the warranty.