并行光学计算实现二维迭代函数系统的仿射变换

n affine transform is a basic transform in fractal Iterated Function System (IFS). The enormous data computing is the bottleneck of traditional IFS. The affine transform of a 2-D image realized in optical way is the key technique for 2-D IFS. An affine transform method based on modern optical switch technique is proposed. It features that the affine transform can be realized by all optical way after parameters are set. It can increase the computing speed. Besides, it can largely depress the crosstalk due to the limited diffraction efficiency of gratings in optical switch. Experimental results verified the effectiveness of this method.