(A) Vertical photographs are also known as 'Air Verticals'.
(B) Oblique photographs provide field information and present a bird's eye view.
(C) Terrestrial photographs are useful for small scale maps, when obstacles hide the details of an area.
(D) Aerial photograph suffers from distortion in scale due to presence of tilt or local relief.
(E) Ground photographs are most important for photo interpretation and mapping of the area.
Choose the correct answer from the options given below :
Aerial Photograph Types: Statement Analysis
This section analyzes the correctness of statements concerning different types of aerial photographs.
Statement (A): Vertical Photographs
Statement: Vertical photographs are also known as 'Air Verticals'.
Analysis: This statement is correct. Vertical photographs are captured with the camera axis nearly perpendicular to the ground. The term 'Air Verticals' is used to denote photographs taken in this vertically oriented manner from an airborne platform.
Statement (B): Oblique Photographs
Statement: Oblique photographs provide field information and present a bird's eye view.
Analysis: This statement is correct. Oblique photographs are taken at an angle to the vertical axis. This angled perspective provides a more natural, bird's eye view, similar to human vision, and captures contextual field information.
Statement (C): Terrestrial Photographs
Statement: Terrestrial photographs are useful for small scale maps, when obstacles hide the details of an area.
Analysis: This statement is incorrect. Terrestrial photographs are taken from the ground, not from the air. They are primarily used for detailed mapping of specific features or local areas, not for creating small-scale maps that cover extensive regions. Aerial photographs are better suited for covering large areas.
Statement (D): Scale Distortion in Aerial Photographs
Statement: Aerial photograph suffers from distortion in scale due to presence of tilt or local relief.
Analysis: This statement is correct. The scale of an aerial photograph can vary across the image. This variation is caused by two main factors: 'tilt' (when the camera is not perfectly vertical) and 'local relief' (variations in the elevation of the terrain).
Statement (E): Importance of Ground Photographs
Statement: Ground photographs are most important for photo interpretation and mapping of the area.
Analysis: This statement is incorrect. While ground photographs are useful for specific detailed studies, aerial photographs generally cover larger areas and provide a synoptic overview, making them more important for large-area photo interpretation and mapping.
Conclusion
Based on the analysis, statements (A), (B), and (D) are correct.
Important Questions from Remote Sensing
Which of the following represents a circumpolar star?
For interpolation of satellite data used for monitoring dynamic changes that occur on the earth surface, the most suitable orbit for the satellite is:
A passive sensor uses:
Which of the following is NOT a function of GPS?
Which of the following is NOT a use of total station?
