Therefore, following processing steps are adopted: stair image preprocessing, stair edges detection, step edges extraction.
为此，采用了以下的处理流程：阶梯图像预处理、阶梯边缘检测、台阶边沿提取。
For an original flame image in shuttle kiln, edge detection algorithms can be used to detect the edges.
对梭式窑内的一幅原始图像，可用边缘检测算法提取火焰图像的边缘。
The traditional image edge detection operators can only get very wide edges usually, which makes it difficult for the later image processing.
传统的边缘检测算子一般都只能得到比较宽的边缘，这为以后的图像处理带来了一定的困难。
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