Using Multi-spectral Imagery in MapInfo Pro Advanced
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1 Using Multi-spectral Imagery in MapInfo Pro Advanced MapInfo Pro Advanced Tom Probert, Global Product Manager
2 MapInfo Pro Advanced: Intuitive interface for using multi-spectral / hyper-spectral imagery Pitney Bowes MapInfo Pro Advanced 2
3 Example use: Walk-through of using an image with the goal of extracting areas of healthy vegetation. Landsat 8 data is used: Pitney Bowes MapInfo Pro Advanced 3
4 Combine the different imagery bands into a single MRR Pitney Bowes MapInfo Pro Advanced 4
5 Use the Grid Calculator to remove the grid border Pitney Bowes MapInfo Pro Advanced 5
6 Display Band 1 Highlights coastal aerosols Useful for imaging shallow water features - can see shallow water sea floor features. Pitney Bowes MapInfo Pro Advanced 6
7 Display Band 2 Blue light wave lengths. Also good for coastal areas. Pitney Bowes MapInfo Pro Advanced 7
8 Display Band 3 Green light wave lengths. More detail on land. Pitney Bowes MapInfo Pro Advanced 8
9 Display Band 4 Red wavelengths Adds more detail to land. Pitney Bowes MapInfo Pro Advanced 9
10 Display Band 5 Near infrared wavelengths. Leaves from vegetation tend to scatter this light back into the sky Can be used to produce indexes like NDVI (Normalized Difference Vegetation Index) which help measure plant health. Pitney Bowes MapInfo Pro Advanced 10
11 Display Band 6 and 7 Bands 6 and 7 cover different segments of the short wave infrared spectrum. Useful for distinguishing wet from dry earth and geology for different rock types. Different types of soil and rocks have strong contrasts in short wave infrared. Pitney Bowes MapInfo Pro Advanced 11
12 Use RGB mode Switch to RGB mode for control over what bands to use. Pitney Bowes MapInfo Pro Advanced 12
13 Template Landsat 8 natural color Built in templates make it easy to take advantage of various ways to use Landsat 8 (and other) imagery. Landsat 8 natural color template clipped by 2% to brighten it up Pitney Bowes MapInfo Pro Advanced 13
14 Template False color vegetation Uses the short wave infrared, near infrared and green bands to highlight healthy vegetation and areas of higher moisture in the brighter green colours. Dry soil and bare earth or rock will be shown in the duller brown-red colours. Clays and moist ground in blueish colours. Pitney Bowes MapInfo Pro Advanced 14
15 Template Healthy vegetation Uses the near and short wave infrared plus the blue The more vibrant vegetation with green foliage will show up in the reddish colours as they will reflect or scatter more infrared light. Pitney Bowes MapInfo Pro Advanced 15
16 Calculate Normalized Difference Vegetation Index (NVDI) Pitney Bowes MapInfo Pro Advanced 16
17 Natural color (brightened) Band 5 Near infrared Normalized Difference Vegetation Index Healthy vegetation Pitney Bowes MapInfo Pro Advanced 17
18 Focus on the healthy vegetation Use the clip limits and transparency settings Pitney Bowes MapInfo Pro Advanced 18
19 Next steps Grids from different time periods can be compared to see the change in vegetation. Grid calculator The areas representing the healthy vegetation can be filtered. Contour regions can be created to allow for calculating the area. Parcel data can be overlaid on the data so as to identify those parcels with areas of healthy vegetation. Region statistics capability. Pitney Bowes MapInfo Pro Advanced 19
20 Support for using multi-spectral/hyper-spectral imagery (Landsat 8) Landsat 8 data is freely downloadable Multiple sensors pick up wavelengths of radiation in visible and non-visible parts of the spectrum. Different features on the earth (and in the air) reflect light of different wavelengths in different ways. Pitney Bowes MapInfo Pro Advanced 20
21 Example uses for Landsat 8 (and other satellite data sources) Environmental monitoring Vegetation health over time Changes driven by climate change Changes in short/long term surface water content. Coastal erosion Public sector organisations can monitor the health of parks and trees Bush fire intensity and spread as well as recovery and regrowth. Agriculture (crop mapping and harvest yield). Imagery taken by drones is facilitating this quick and cheap data acquisition. Near real-time ability to monitor the health, growth rate and yield potential of crops and plan irrigation, fertilizer and pest control to best effect. Urbanization Ground surface and water surface temperature. Monitor air pollution Pitney Bowes MapInfo Pro Advanced 21
22 Try MapInfo Pro Advanced MapInfo Pro Advanced is part of the MapInfo Pro free trial download. To help you learn how to use MapInfo Pro Advanced: Articles in The MapInfo Pro journal: Video tutorials on our YouTube channel Pitney Bowes MapInfo Pro Advanced 22
23 Thank you Tom Probert MapInfo Pro Global Product Manager Pitney Bowes MapInfo Pro Advanced 23
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