A method is described for finding the of an unmarked camera station, based on repeated trials until a transparent plastic of landmarks in the original picture is to the sceo be repeated. Distances five landmarks, as measured on the old and new photographs with respect to an arbitray axis, are needed to determine ratios of distances independent of scale. Such ratios correctness of the trial location. The distances can ordinarily be measured within an accuracy of 1 percent and the site reoccupied with approximately the same accuracy.

First Page Preview

First page PDF preview
You do not currently have access to this article.