【摘要】 针对校正靶上标志物难以识别和提取的问题,根据校正靶自身特征提出了相应的标志物投影识别和提取方法。首先该方法消除背景颜色并使用Otsu算法获取的阈值对图像进行分割,然后使用形态学膨胀和腐蚀对分割后图像进行处理,最后根据处理的结果识别和提取出各网格线交叉点坐标并算出该领域的中心坐标。实验表明,所提出的方法能够有效地识别和提取出校正靶投影图像上网格线交叉点坐标。更多还原

【Abstract】 Aiming at the problem that it is difficult to identify and extract the marker on calibration grid,the paper proposed a method of identifying and extracting the marker projection according to the characteristics of the calibration grid its own.Firstly,the method removes the background colour and uses Otsu algorithm to segment the image.Then the morphology dilation and erosion operation are used to deal with the segmented image.Finally,the intersect coordinates of every cross grid are identified and extracted from the last step result.The centre coordinates of every domain are calculated according to the intersect coordinates.Experiment demonstrated that the proposed method can effectively identify and extract the intersect coordinates of calibration grid image.更多还原