However, some fundamental problem remains largely unsolved until now.For these reasons, we want to design a better CBIR system that is more close to human perceptual and more efficiency.

• 由于数位化和网际网路的发逹使得网际网路方便传输及资讯交换更为容易，因此也造成许多数位媒体产生了版权上的争议。