连续激光干扰效果评估方法

Evaluation method of continuous laser interference effect

采用改进后的图像相关度计算方法,在精确配准干扰前后图像的基础上,以像素为单位计算图像相关度,根据人眼识别效果在评估前确定干扰阈值,计算图像有效干扰像元统计值,定量描述激光干扰效果;开展多波段激光干扰成像系统试验,采集不同干扰功率下的激光干扰图像,评估干扰效果。结果表明,该方法能精确识别图像局部变化,客观反映图像质量变化,对各波段不同功率下的激光干扰成像图像给出科学评估结果,对单对图像的处理速度优于s级,具有一定的工程应用价值。

The improved image correlation computing method was adopted.On the basis of accurate registration of images before and after interference,the image correlation was computed in pixels,the interference threshold was determined according to the human eye recognition effect,the statistic value of image effective interference pixels was calculated,and the laser interference effect was quantitatively described.The experiments of multi-band laser interference imaging system were carried out,and the laser interference images under different interference power were collected to evaluate the interference effect.The results show that the proposed method can accurately identify the local changes of the images,objectively reflect the image quality changes,and give scientific evaluation results for the laser interference imaging images under different power in each band,and the processing speed of a single pair of images is better than the second level,which has certain engineering application value.