Question

The ortho-rectification:

• A. Improves image brightness
• B. Removes atmospheric haze from remote sensing image
• C. Removes geometric distortions caused by terrain relief and sensor tilt
• D. Converts raster image into vector polygons

Hint:

Orthorectification converts an image into a map-accurate product by correcting \[ \boxed{ \text{Relief displacement + Sensor tilt + Geometric distortions} } \]

Answer 1

The Correct Option is C

Concept: Orthorectification is the process of correcting geometric distortions in aerial or satellite images so that distances and positions correspond accurately to ground coordinates.

Step 1: Understand orthorectification. It corrects distortions caused by
• Terrain relief
• Sensor tilt
• Camera geometry
• Earth curvature (when required)

Step 2: Identify the correct purpose. Hence, \[ \boxed{\text{Orthorectification removes geometric distortions caused by terrain relief and sensor tilt}.} \] Therefore, the correct option is \[ \boxed{(C).} \]