The 'base to height ratio' in aerial photogrammetry for stereo viewing determines:
Choose the correct answer
Only horizontal accuracy
Vertical exaggeration in stereoscopic model and vertical measurement accuracy — larger B/H = better height accuracy
Only the number of photographs taken
Colour accuracy of photos
Correct Answer
B. Vertical exaggeration in stereoscopic model and vertical measurement accuracy — larger B/H = better height accuracy
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Base-to-height ratio B/H (also called base-height ratio): B = air base between consecutive photo centres, H = flying height above ground. B/H determines: vertical exaggeration in stereoviewing and height accuracy of photogrammetric measurements. For better height accuracy: larger B/H. Standard B/H ≈ 0.4–0.7 (for 60% endlap). Very small B/H gives poor vertical resolution.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.