Superimpose of thermal image on 3d cad model

I am using openmv based Lepton 3.5 camera to capture a thermal image of a mold. For cad model i used helius 2 ToF camera and obtained 3 d Cad model. Now i have to superimpose thermal image of the mold with cad model of the same. so as to detect tmerature variation when hot liquid is added