An interlaced image processing module and corresponding method facilitate improved processing of interlaced motion images. A programmable gain operational amplifier has an input coupled to receive the first stair-step voltage ramp waveform. The preferred equalizer includes an FIR transition filter using a look-up table. A first filtered value is obtained by the decoder by summing at least the three weighted horizontally successive pixel values. When this design method is combined with varied configurations of basic underlying ROM cell types, even further increased cell density can be achieved.