After processing the amplitudeimage and phase image which was come from experiment we obtain the distribution of the velocity and attenuation.
通过实验获得了声相位图与声幅度图，并通过数字图像处理获得了相应的速度图与衰减图。
2
The computation simulation results show that in confocal optic system this mask can change the point amplitude response. It can improve the resolution, while increase the image contrast.