photo plumb point

nadir point

i. The same as nadir
ii. As it relates to aerial photogrammetry, it is the point where a plumb line dropped from the front nodal point pierces the photograph. This point is vertically beneath the exposure station. In the illustration, it is point N. Also called a photo nadir and a photo plumb point.

photo nadir

The point at which a vertical line through the perspective center of the camera lens intersects the photo plane. It is the point in the photo plane immediately below the lens at the instant of exposure. Also called camera nadir, photo plumb point, and a nadir point

单词	photo plumb point
释义	DictionarySeenadir point photo plumb point nadir point i. The same as nadir ii. As it relates to aerial photogrammetry, it is the point where a plumb line dropped from the front nodal point pierces the photograph. This point is vertically beneath the exposure station. In the illustration, it is point N. Also called a photo nadir and a photo plumb point. photo nadir The point at which a vertical line through the perspective center of the camera lens intersects the photo plane. It is the point in the photo plane immediately below the lens at the instant of exposure. Also called camera nadir, photo plumb point, and a nadir point
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