首先介绍了三维编织复合材料预制件表面图象的采集方式、滤波技术以及平均编织角的测试过程;然后介绍了采用基于边缘方向判决的自适应滤波器对采集的三维编织复合材料预制件表面图象进行滤波和边缘提取以及对处理后的预制件图象进行纹理分析,而得到功率谱图的方法.通过纹理分析方法对预制件的滤波图象进行\r\n平均编织角测量的结果,及通过标准图象验证了系统的可行性试验结果说明,系统具有较高的精度,是一种行之有效的测量三维编织复合材料预制件平均编织角的新方法.

This paper introduced mode of collecting、technology of filtering and measuring process about image of three dimension composite preform surface. After image of preform surface which was filtered by based direction adaptive filter(BDAF), we can calculate spectrun of image of preform surface that had been manipulated. We can measure average angle using method of texture analysis. It has been proved to be correct by sandard image. The experiment shows the system will be accurate. Practice shows that it is one of the effective and new technique about measuring average angle of three dimension composite preform.