On the accuracy assessment ofheight determinations from aerial stereophotography

Abstract

To increase the accuracy of the heights obtained from a stereo pair, it is natural, first of all, to strive to ensure that one meter of height corresponds to the largest possible increment of longitudinal parallax at a given scale of the photograph. Or, in other words, one should strive to increase the ratio of the increment of longitudinal parallax (Δр)1 per 1 m to the segment (m)1 on the photograph corresponding to 1 m of horizontal distance on the ground. Let us designate this ratio as t. Thus, the value of the indicated ratio acquires a significant role in characterizing the accuracy of height determinations.

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