What is the pixel classification for different land use in an NDBI map for hilly areas?
Hello Suhel Sen
Here’s how you can interpret NDBI values:
- Negative values indicate non-built-up areas such as vegetation or water bodies.
- Positive values indicate built-up areas such as roads, buildings, and concrete surfaces.
- The higher the positive value, the more likely the area is built up.
Please note that these are general guidelines and the exact thresholds can vary depending on the specific characteristics of the area you are studying. It’s always a good idea to ground truth your results if possible.
May u go through this article:
https://www.linkedin.com/pulse/ndvi-ndbi-ndwi-calculation-using-landsat-7-8-tek-bahadur-kshetri/
All the best,
Ali YOUNES
Kindly review the literature to gain an understanding of the different threshold values, which may not necessarily apply to your study area.
It is also recommended that you apply NDBI on your imagery and verify the classes against values using Google Earth images and/or field verification.
Pixel ranges will simply depend on the area analysis and the satellite image one is using.
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