Any reason why you only need the RGB bands? I think you could make full use of the entire spectrum.
Anyways, you have to resample the full product to 10 meters before you can make a band subset. Not the best solution, but currently the only choice for proper metadata handling.
Sirā¦
I did preprocessing steps (calibration, speckle filtering, terrain correction) for S1 data.
For S2 data I performed resampling for 4,3,2 bands (If I select all bands, the product is writing more than one hour and nothing happen), then I mosaic and mask my study area. Next I did the collocation by selecting S1 band as master product and S2 as slave. After that I applied PCA. But its loading and nothing happens. What was wrong and what should I do sir?
PCA is just a way to reduce the redundancy of a feature space (here a raster stack). It tells you where the images are alike (have the highest share of variation) and where they are different.
It is not necessarily linked to water body mapping, but there are studies which tested it:
Thank you for these papers. I refered this. I have finished PCA and HPF. After that they have made standardization of PCA components and inverse gray processing for High Pass Filtered microwave data. I have no idea about these processes.
In this flow chart can you please explain how to do that all processes?
(RGB to IHS and inverse IHS transform, standardization of PCA components, inverse gray processing, density separation, histogram matching and multiplication of the results?)
sir ,I have a new ptoblem here,if i intend to fusion using sentinel-1 and sentinel-2 and to evaluate the accuracy of results.i got two methods to do that including create a stack and Collocate them,what the difference for the two ways?
Hi, would you mind share more information about how you implement Coregistration and to manage to show both Sentinel-1 and Sentinel-2 at the same time? Many thanks.
Itās coherent and corret to apply a classifier like RF on a PCA bands? Youāve said that for RF classification, itās suficient stack the SAR and Optical bands.