3.2.2. Geometric Correction

Try these first

1. 1.

   What is geometric correction?

   Hint

   Think about why accurate location is important.

2. 2.

   Name one method of resampling.

   Hint

   Which method helps smooth the image?

3. 3.

   What is the purpose of geometric correction?

   • To enhance color
   • To align images to real-world coordinates
   • To increase file size

   Hint

   Why is accuracy important in geospatial data?

4. 4.

   True or False: Bilinear interpolation is better for image quality than nearest neighbor.

   • True
   • False

   Hint

   Which method averages neighboring pixels?

5. 5.

   Given a distorted satellite image and a list of GCPs, outline a step-by-step approach to apply geometric correction.

   Hint

   Consider both the correction and the interpolation steps in your approach.

6. 6.

   Critically analyze the advantages and disadvantages of using Nearest Neighbor vs. Cubic Convolution for satellite imagery.

   Hint

   Think about time vs. quality trade-offs in data processing.