A photographic gallery of magic, haunted and unusual places. Each photograph has colour mode switching and also its own map of location.

一个魔术，困扰和不寻常的地方摄影画廊。每张照片的颜色模式转换，也是它的定位自己的地图。

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At present, the main ways to obtain DEM are: ground measurements method, the paper map digitization method, space-sensors based methods and digital photographic methods.

目前获取DEM的主要方式有：地面测量方法、现有地图数字化法、基于空间传感器法及数字摄影测量法。

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The effect of aerial photographic swing angle to the orientation precision of digital photogrammetry changes with the processing technical methods and the size of map scale.

航摄旋偏角对测图定向精度的影响随着处理技术手段的变换而改变，也随着比例尺由小变大而改变。

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