The implementation of time domain fluorescence lifetime imaging (TD-FLIM) requires high cost bandwidth electronics and large storage capacity. A cross-level sampling technique for TD-FLIM is proposed. A simulation of this sampling technique was implemented using synthetic FLIM data. FLIM images were synthetically generated at different noise levels using a wide range of lifetimes. Each of the images was resampled using a cross-level approach and the lifetime maps were computed. Simulation results displayed strong correlation between the lifetime maps of the original and resampled images, suggesting that this sampling method could be adopted to reduce bandwidth and data transfer/ storage requirements.