在两条实际隧道中对三种光源照明下的小目标可见度进行了实际的测量和计算，并且提出了小目标显色性的视觉实验方法。

In the two actual tunnel, we measured and calculated visibility of the small target under the three light source, and made a visual experimental method of the small target color.

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数码摄像技术作为一种方便、快速、可靠的高科技技术，在隧道的测量中有着极大的发展潜力。

As a kind of convenient speedy and reliable high technology, the digital photography technology has tremendous potential in tunnel measurement.

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同时，隧道断面测量的结果还是优化隧道设计和施工的重要依据。

Also, the optimizing the tunnel design and the construction are according as the result of surveying of the tunnel contour.

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