 |
| Feature 1 multispectral analysis: Deep water. |
 |
| Feature 2 multispectral analysis: Snow. |
 |
| Feature 3 multispectral analysis: Shallow water. |
Our task this week was to practice using different methods of multispectral data analysis to find three features with particular EMR signatures. The methods practiced in the assignment included histogram analysis and manipulation, displaying different combinations of bands as composites, creating indices based on different bands (e.g., Normalized Differential Vegetation Index), and using the Inquire Cursor to get detailed data on individual pixels. In order the find the three features, I primarily used the Inquire Cursor method based on histogram analysis.
The assignment helped me greatly in understanding histograms, although I am still not confident in manipulating them for a better image. By looking at the histograms of each band, one gets a good sense of how the data will display. I also appreciated the practice in combining bands into custom composites to highlight particular data. This was something I did not quite grasp in ArcMap, but the methods in Imagine made the concepts clearer.
No comments:
Post a Comment