According to the engineering practice, the arithmetic of edge check can decrease the supposititious edge pairs and image noise, and has high precision and practicality.

工程实践证明，算法能抑制虚假边沿的出现，消除图像噪声，在实际应用中具有较高的精度和实用性。

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This method has the high effective programme, the stable and fast arithmetic, the high calculate precision, the good expansion, the good alternating and the value of project application.

该方法编程效率高、算法快速稳定、计算精度高、扩充能力强、交互性好，有一定的工程应用价值。

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Results show that the digital PID arithmetic is flexible, high precision and easy integration compared with analog arithmetic.

结果表明，数字PID算法和模拟算法相比，具有控制灵活、精度高、易于高度集成化等优点。

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