The paper presents a method to recognize integral lines in scanned image of engineering drawings based on a primitive regions adjacency graph.

给出一种基于单义域邻按图的完整识别线段算法。

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The mathematical morphology method was used to extract the envelope of the spectrogram, and then to recognize automatically the character points of the graph.

利用数学形态学方法提取声谱包络，并进行包络特征点的自动识别。

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So, most people could recognize that light wave a has the shorter wavelength. We can see that just by looking at the graph itself -- we can see certainly, this is shorter from maxima to maxima.

0秒钟，好的，不错大部分,同学都可以判断出来这个光波的,波长更短，我们仅通过,看图就能看出来-可以。

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