im pretty sure marijuana plants retain a little more heat than other regular foliage. other plants and trees etc. there are cameras that do find bud plants, through infared and other detection avenues but they are expensive and prolly not used by many copper choppers. so the answer is more yes than no but its a complicated one. just make sure ur spot is off the beaten path and dont plant more than 3-5 plants in the same area. always have a backup story.
good luck