图像稠密坐标网格的去除

Elimination of Dense Coordinate Grid in Image

针对工程图为脉冲边滑曲线图且稠密坐标网格使得边缘提取成功率较低,提出了基于Hough变换与基于线检测对水轮机特性曲线稠密坐标网格去除方法。利用Canny算法对图像进行边缘检测,采用Hough变换检测图像中直线,并分析了实值标量取值对检测结果的影响,从原图像中减去提取的直线即为被去除坐标网格的图像。实验结果表明,基于线检测模板对去除稠密坐标网格具有较好的效果。

Because elimination of dense coordinate grid is an important way to improve curve vectorization, we proposed the method of eliminating dense coordinate grid for the Turbine＇s Characteristic Curves based on Hough transform and Line detection. The image is checked by canny algorithm. The stnaight line in image is detected by use of hough transform. The effect of real-value scalar to detection result is analyzed. The detected line is substracted from the original image. The experimental result shows that the elimination of dense coordinate grid method has better result.