使用matlab所開發的jpeg工具,裡面完全沒有使用到matlab的函示,包含predition,quantization都是自己所撰寫的,針對lena做壓縮,但最後沒有做entropy的過程-Use matlab developed jpeg tool, which did not use the letter to the matlab that contains predition, quantization are written by himself, for lena to do