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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通过对所设计的试验装置的误差因素进行分析，提出了为提高稳定性和测量精度的一些设想。

Through this analysis of the factor of error of these devices some Suggestions for increasing the measuring a...

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