[amp_mcq option1=”Increases as the horizontal distance increases from the principal point” option2=”Increases as the ground elevation increases” option3=”Decreases as the flying height increases” option4=”All the above” correct=”option4″]<\/p>\n
The correct answer is: D. All of the above<\/strong><\/p>\n The height displacement on a vertical photograph is the difference between the elevation of a point on the ground and the elevation of its image on the photograph. It is given by the following formula:<\/p>\n $h = \\frac{f}{H}(x – x_p)$<\/p>\n where:<\/p>\n As the horizontal distance from the principal point increases, the height displacement increases. This is because the image of a point on the ground that is further from the principal point will be projected onto a smaller part of the photograph, and therefore the height displacement will be greater.<\/p>\n As the ground elevation increases, the height displacement also increases. This is because the image of a point on the ground that is higher up will be projected onto a higher part of the photograph, and therefore the height displacement will be greater.<\/p>\n As the flying height increases, the height displacement decreases. This is because the image of a point on the ground that is further away will be projected onto a larger part of the photograph, and therefore the height displacement will be smaller.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”Increases as the horizontal distance increases from the principal point” option2=”Increases as the ground elevation increases” option3=”Decreases as the flying height increases” option4=”All the above” correct=”option4″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[654],"tags":[],"class_list":["post-8309","post","type-post","status-publish","format-standard","hentry","category-surveying","no-featured-image-padding"],"yoast_head":"\n\n