We have developed a scanner which can scan 3d objects and export it in ply format. The objects being scanned are trucks. The end purpose of our requirement is to calculate the volume of material in the truck. This can be done by subtracting the volume of the empty truck from the filled truck. But due to the change in suspension of the filled truck, a simple result would not be correct. So first, the empty and the filled trailers need to be extracted from the scans. Then they need to be aligned and after that the volume needs to be computed.