I downloaded a satellite image from eumetsat for sst and chl-a in my study area. However, after I loaded the image in arcmap, the values shown are the DN values, how can I convert it to actual sst and chl-a values?
Rowena Napoles
To convert satellite image values in ArcMap to actual SST and Chl-a values, you will need to use the following steps:
It is important to note that the conversion equation that you use will vary depending on the satellite image and the sensor that was used to collect the data. You can find the conversion equation for your satellite image in the metadata for the image.
Here are some additional tips for converting satellite image values to actual SST and Chl-a values:
- Make sure that you are using the correct conversion equation for your satellite image.
- Use a high-quality satellite image. The quality of the image will have a direct impact on the accuracy of the conversion.
- Use a robust conversion procedure. The conversion procedure should be designed to avoid introducing errors into the data.
- Use a validation set. The validation set should be used to evaluate the performance of the conversion procedure on unseen data. This can help you to identify when the conversion procedure is introducing errors and to adjust the procedure accordingly.
- Use a test set. The test set should be used to evaluate the final performance of the conversion procedure. This is the data that the conversion procedure will be used on in production, so it is important to make sure that the procedure performs well on this data.
Please recommend my reply if it is useful .Thanks
Aahed Alhamamy I tried following the steps you provided, but I couldn't find the "DN to VALUES dialog box"