The calibration procedure is proposed to decrease the bad influence of environment and to increase the accuracy of geometrical measurement by image.
采用图像真值标定方法，降低了环境的影响，提高了测量的精度。
Advantages of CCD in geometrical quantity measurement are high accuracy, on-line dynamic detection and non-contact measurement.
将CCD应用于几何量测量中，可以满足高精度测量、在线动态检测和非接触测量等的工程实际要求。
The polarization interferometry with high resolution and high accuracy is widely used in the measurement of geometrical quantities.
高分辨率、高精确度的偏振干涉测长方法在几何量测量中得到了广泛的应用。
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