A system for forming an object, the system including: a carriage, wherein the carriage moves above an area for forming the object and laterally with respect to the area, the carriage comprising an electromagnetic radiation source to induce heating of material in the area; a thermal imaging device to image the area, wherein the thermal imaging device captures a plurality of sequential images; and a processor, wherein the processor uses the plurality of sequential images to create a temperature map of the area which includes compensation for the cooling which occurs during the movement of the carriage lateral to the area.