Raster resampling when Clipped - why? How to prevent?
Same question as a previous post of mine - still no solution so trying again with more information and examples.
As part of a georeferencing workflow, I run the Clip Raster tool to remove non-image edge regions. However when I run the tool, the resulting image is resampled and has a different cell value histogram. I am less concerned about the histogram change - I will be color balancing in a mosaic dataset later on - but I want to understand why the cells appear to be resampled.
Both the size and shape of the cells in the image appear to change. When I check the cell size in the raster Properties, it states that the cells are the same size - but the Clipped image has a visibly coarser resolution that persists when the image is georeferenced and saved.
I run the Clip Raster geoprocessing tool with a drawn polygon as the output extent, "Use Input Features for Clipping Geometry" checked, and the default values for No Data and Maintain Clipping Extent (256 and Unchecked, respectively). I have tried setting the Input Raster as the Snap Raster but this doesn't appear to help.
I am fairly sure that this behavior did not always occur, as I documented the workflow in the spring and specifically used the steps and order that I did to avoid visible resampling of the input.
Does anyone know why this is happening, and how I can prevent it? It is very frustrating. Thanks in advance for any assistance!
Editing to add - Pro version 3.4.3
