说明：  Laser-based的建材研究，报告中附有完整的matlab 源码。
(Defective timber is unwanted by the customers therefore it is separated from the normal timbers as soon as it comes out of the sculpting process before it is sent to the market. Therefore the objective of this project is to use a laser-based technique to identify the defects, the type of defects and the quality of the timber.)