研究了一种利用弹性波识别二维缺陷形状的方法。
The method of 2-d flaw identification using elastic wave is studied in this paper.
从算例可以看出，此方法能够有效地识别材料的二维缺陷。
From the examples, the2-D flaws of materials are identified effectively based on this method.
采用像素点变换法，实现了根据三维物体的二维投影图像恢复物体表面的真实几何面积的设想，大大降低了缺陷面积计算的误差；
To decrease the relative errors, the pixel transform method was adopted to recover the geometrical feature of sphere fruit surface from projected image while the area of defect was calculated.
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