3 . in the traditional unwrapping methods , unwrapping is often failed when there are noises in the images 在传统解相方法中,由于噪声点的存在很容易造成解相的失败。
On this basis the noise in image can be eliminated by mathematically morphology and the object can be highlighted 在此基础上用数学形态学去除图像中的噪声点,突出目标。
So the advanced salt and pepper filter is applied in the gray handwriting images . the best result is achieved in these handwriting images , which have the broad and pockety noise 改进的盐和胡椒滤波器可应用于灰度笔迹图像,对于分布广泛且不均匀的噪声点的去除有较好的效果。
The study for preprocessing of data points is mainly concentrated on the noise error reduction of cloud point data , data compression , and data segmentation . corresponding algorithm of data preprocessing are 在数据的预处理上对点云数据的噪声点处理、数据压缩处理和数据的区域分割进行了研究,给出了相应的算法。
Finally , the x - band low phase - noise single output frequency synthesizer is designed and tested , and the measured results show that , this frequency synthesizer can satisfy the requirements of the system scheme 最后,研制成功了x波段低相位噪声点频源,实测结果表明其指标满足毫米波频率源合成器的基本方案对该功能组件的要求。